As per the developers handbook (5.3.1 step 1), prepare the vendor trees for

import of new ipfilter vendor sources by flattening them.

To keep the tags consistent with dist, the tags are also flattened.

Approved by:	glebius (Mentor)

1 files changed, 0 insertions, 2307 deletions

diff --git a/contrib/ipfilter/HISTORY b/contrib/ipfilter/HISTORY
deleted file mode 100644
index b500c20..0000000
--- a/contrib/ipfilter/HISTORY
+++ /dev/null
@@ -1,2307 +0,0 @@
-#
-# NOTE: Quite a few patches and suggestions come from other sources, to whom
-#       I'm greatly indebted, even if no names are mentioned.
-#
-# Thanks to the Coombs Computing Unit at the ANU for their continued support
-# in providing a very available location for the IP Filter home page and
-# distribution center.
-#
-# Thanks also to all those who have contributed patches and other code,
-# and especially those who have found the time to port IP Filter to new
-# platforms.
-#
-4.1.28 - Release 16 October 2007
-
-backout changes (B1) & (B2) as they've caused NAT entries to persist for
-too long and possibly other side effects.
-
-Still need to compile in our own radix.c for Solaris as the one in S10U4
-has a different alignment of structure members (causes panic)
-
-keep state doesn't work with multicast/broadcast packets (makes UPnP easier)
-
-ippool -l may only lists every 2nd pool's contents
-
-4.1.27 - Released 29 September 2007
-
-SunOS5/replace script does not deal with i386 systems that have the
-i86/amd64 directory pair.
-
-make BSD/kupgrade try to build ip_rules.[ch] before complaining
-
-Need to look for ipl.ko LKM on FreeBSD, not just ipf.ko
-
-Cleanup SunOS5 Makefile pieces, removing CPU, sunos5x86; buildsunos needs
-to drive 32bit cc builds differently for sparc/i386 now.
-
-Update instructions for rebuilding FreeBSD kernels
-
-Make the target "freebsd" work for building ipfilter
-
-destroying NAT entries for blocked packets can lead to NAT table entry leak,
-provide a counter of orphan'd NAT entries to track this problem.
-
-4.1.26 - Released 24 September 2007
-
-Fix build problem for Solaris prior to S10U4
-
-4.1.25 - Released 20 September 2007
-
-stepping through structures with ioctls can lead to the wrong things
-being free'd and panics
-
-if a NAT entry (such as an rdr) is created but the packet ends up being
-blocked, tear down the NAT entry.
-
-fix fragment cache preventing keep state from functioning
-
-fix handling of \ to indicate a continued line in .conf files
-
-include port ranges in the allowed input for ipf when using "port = ()"
-
-only advance TCP state for packets on the leading edge of the window. (B1)
-
-using ipnat -l can lead to memory corruption in high stress situations
-
-track TCP sequence numbers with NAT so that it can do timeout advances
-correctly inline with state
-
-ICMP checksums for some redirect'd packets are not adjusted correctly.
-
-IPv6 address components need to be explicitly cast to a 32bit pointer
-boundary so that compilers don't try to access them as two 64bit
-pieces (no guarantee is made that an Ipv6 address is on a 64bit
-aligned address)
-
-filling up the ipauth packet queue can lead to no more packets being
-processed.
-
-locking used to deref a nat entry causes a significant performance hit
-
-m_pulldown isn't properly handled, leading to possible panics with ICMPv6
-packets
-
-IPv6 fragment handling doesn't allow for "keep frag" to work
-
-build on Solaris10 Update4 with pfhooks in the kernel
-
-logging of Ipv6 packets with extension headers fix - Miroslaw Luc
-
-4.1.24 - Released 8 July 2007
-
-patch from Stuart Remphrey to address recursive mutex lock with TCP state
-
-add hash table bucket stats display to ipnat -s
-
-give ASSERT some teeth for user compiles
-
-initialising ipf_global, ipf_frcache, ipf_mutex should all be done very
-early on
-
-do some caddr_t cleanup, where possible
-
-fr_ref no longer tracks the number of children rules in a group for head rules
-
-make sure all BCOPY* have a value assigned to something
-
-fix possible use of icmp pointer after pullup makes it invalid
-
-resolve compile problems related to FreeBSD tree
-
-4.1.23 - Released 31 May 2007
-
-NAT was not always correctly fixing ICMP headers for errors
-
-some TCP state steps when closing do not update timeouts, leading to
-them being removed prematurely. (B2)
-
-fix compilation problems for netbsd 4.99
-
-protect enumeration of lists in the kernel from callout interrupts on
-BSD without locking
-
-fix various problems with IPv6 header checks: TCP/UDP checksum validation
-was not being done, fragmentation header parsed dangerously and routing
-header prevented others from being seen
-
-fix gcc 4.2 compiler warnings
-
-fix TCP/UDP checksum calculation for IPv6
-
-fix reference after free'ing ipftoken memory
-
-4.1.22 - Released 13 May 2007
-
-fix endless loop when flushing state/NAT by idle time
-
-4.1.21 - Released 12 May 2007
-
-show the number of states created against a rule with "-v" for ipfstat
-
-fix build problems with FreeBSD
-
-make it possible to flush the state table by idle time and TCP state
-
-fix flushing out idle connections when state/NAT tables fill
-
-print out the TCP state population with ipfstat/ipnat
-
-stop creation of state table orphans via return-*/fastroute
-
-fix printing out of rule groups - they now only appear once
-
-4.1.20 - Released 30 April 2007
-
-adjust TCP state numbers, making 11 closed (was 0) to better facilitate
-detecting closing connections that we can wipe out when a SYN arrives
-that matches the old
-
-make it compile on Solaris10 Update3
-
-structures used for ipf command ioctls weren't being freed in timeout
-fashion on solairs
-
-use NL_EXPIRE, not ISL_EXPIRE, for expiring NAT sessions
-
-adjust TCP timeout values and introduce a time-wait specifc timeout
-to get a better TCP FSM emulation and one that can hopefully do a better
-job of cleaning up in a speedy fashion than previous
-
-refactor the automatic flushing of TCP state entries when we fill up,
-but use the same algorithm as before but now it hopefully works
-
-only 2 out of 4 interface names were being changed by ipfs when
-interface renaming was being used for state entries
-
-add ipf_proxy_debug to ipf-T
-
-matching of last fragments that had a number of bytes that wasn't a
-multiple of 8 failed
-
-some combinations of TCP flags are considered bad aren't picked up as such,
-but these may be possible with T/TCP
-
-4.1.19 - Released 22 February 2007
-
-Fix up compilation problems with NetBSD and Solaris.
-
-4.1.18 - Released 18 February 2007
-
-fix compiling on Tru64
-
-fix listing out filter rules with ipfstat (delete token at end of
-the list and detect zero rule being returned.)
-
-fix extended flushing of NAT tables (was clearing out state tables)
-
-fix null-pointer deref in hash table lookup
-
-fix NAT and stateful filtering with to/reply-to on destination interface
-
-4.1.17 - Released 20 January 2007
-
-make flushing pools that are still in use mark them for deletion and
-have attempting to recreate them clear the delete flag
-
-walking through the NAT tables with ioctls caused lock recursion
-
-fix tracking TCP window scaling in the state code
-
-4.1.16 - Released 20 December 2006
-
-allow rdr rules to only differ on the new port number
-
-when creating state entry orphans, leave them on the linked list but not
-attached to the hash table and mark them visible as orphans in "ipfstat -sl"
-
-log state removed when unloading differently to allow visible cues
-
-return ipf ticks via SIOCGETGS for /dev/ipnat so "ipnat -l" can display ttl
-
-abort logging a packet if the mbuf pointer is null when ipflog is called
-
-Some NetBSD's have a selinfo.h instead of select.h
-
-SIOCIPFFL was using copyoutptr and should have been using bcopy for /dev/ipauth
-
-listing accounting rules using ioctl interface wasn't possible
-
-fix leakage of state entries due to packets not matching up with NAT
-
-improve ICMP error packet matching with state/NAT
-
-fix problems with parsing and printing "-" as an interface name in ipnat.conf
-
-4.1.15 - Released 03 November 2006
-
-Add in automatic flushing of NAT, like state, table if it fills up too much
-
-Update comments in the code for NAT checksum adjustments
-
-Fix compiling on FreeBSD 5.4 and 6.0
-
-prevent panics from read/write IOs trying to use uninitialised structures
-
-Newer NetBSD should use malloc() instead of MALLOC() in the kernel where
-the size is not staticly defined
-
-Some gcc warning message cleanup from NetBSD
-
-Missing include for <sys/filio.h> on Solaris for poll work
-
-NetBSD now uses opt_ipfilter.h, not opt_ipfilter_log.h
-
-4.1.14 - Released 04 October 2006
-
-rewrite checksum alteration for ICMP packets being NAT'd to use a sane
-algorithm that can be understood...now it needs better comments
-
-fix 1 byte error in checksum validation perl script
-
-remove unused files in lib directory
-
-ipftest will say "bad-packet" if it has been freed rather than just "blocked"
-
-make it possible to load IP address pools from external files in ippool.conf
-
-update copyright messages in tools directory
-
-consolidate ioctl hanlding source code into fil.c
-
-make ipfstat, ippool, ipnat retrieve information via ioctls rather than /dev/kmem
-
-4.1.13 - Released 4 April 2006
-
-fix bug where null pointers introduced by proxies could cause a crash
-
-pass out the rule flags with SIOCAUTHW
-
-force loading NAT rules with bad proxy labels to cause an error
-
-nat_state is used unsafely in calls to fr_addstate
-
-make return-rst and return-icmp* work with auth rules
-
-4.1.12 - Released 28 March 2006
-
-poll support on FreeBSD/NetBSD needs to use selrecord/selwakeup
-
-make the fastroute code used by ipftest invoke state/NAT
-
-move verbose/debug macros out of fil.c and into ip_fil.h (for wider use)
-
-remove unused code in fr_fastroute
-
-fix NAT with rules that specify forward and reverise interfaces
-
-add missing ipfsync_canread() and ipfsync_canwrite()
-
-behaviour of \ on the end of a line in ipf.conf does not match older behaviour
-
-remove duplicate statistics line output with "ipfstat -s"
-
-4.1.11 - Released 19 March 2006
-
-Patch for NAT with ipfsync from N. Ersen (SESCI) - www.enderunix.org
-
-NetBSD coverity report fixes (from run 5)
-
-Possible to reacquire ipf_auth without releasing it in some circumstances
-
-Locking in FreeBSD's iplioctl for ipf_global isn't present like it shoudl be
-
-Add poll support for platforms I can build on: NetBSD, FreeBSD, Solaris, Linux
-
-Using auth rules to return "keep state" got broken with pushing fr_addstate
-call into fr_firewall
-
-all use of '!' in map/rdr rules to match use in ipf configs
-
-add -L command line option to ipmon to set the default syslog facility
-
-looking up a port number is more complex than needed in ipft_tx.c
-
-allow lib/getport to work when neither tcp or udp are specified in a rule
-
-remove some dead code from lib/addicmpc, lib/facpri.c, lib/icmpcode.c
-
-program in some more cases where TCP packets fail an initial in-window
-check but should be allowed to match
-
-filter rule added with NAT/state handling of SIOCSTPUT doesn't properly
-initialise all fields, making it possible to panic
-
-simplify NAT ICMP error handling where it updates checksums
-
-rename "min" variables to "xmin" on NetBSD to avoid problems with the
-macro "min"
-
-#ifdef's for NetBSD compile incorrect for pfil interface
-
-support select/poll on NetBSD
-
-copying out a packet with an auth rule fails (EFAULT) because the wrong
-pointer is passed to copyoutptr
-
-ip_len/ip_off where byte swapped twice instead of once for packets
-going to be stored on the auth queue
-
-change timeout queue manipulation functions to make fewer mutex calls
-
-fix use of skip rules with groups
-fix coding problems discovered by the coverity project for FreeBSD
-
-update BPF program validation with FreeBSD changes
-
-4.1.10 - Released 6 December 2005
-
-Expand regression testing to cover more features
-
-Add "coverage" build target for BSD
-
-Fix building 64bit sparc target for Solaris
-
-Add IPv6 mobility header to list of accepted keywords for V6 headers
-
-Resolve locking problems on Solaris when sending RST/icmp packets
-
-#ifdef's for IPFILTER_BPF need to check if words are defined before
-using them in comparisons
-
-Add checking for SACK permitted option in TCP SYN packets
-
-Fix loading anonymous pools from inline rule configuration groups
-
-Add -C command line option to ipftest
-
-Include extra "const" from NetBSD
-
-Don't require SIOCKSTLCK for SIOCSTPUT
-
-Fix some use of "sticky" on NAT rules
-
-Fix statistical counting of deleting state for TCP connections
-
-Fix compile problems caused by changes to is_opt/is_optmsk in ip_sync.c
-
-Fix TCP out-of-window (OOW) problems:
-- window scaling turned off if one chose for its scale factor
-- Microsoft Windows TCP sends the "next packet" to the right of the window
-  when using SACK and filling in a hole
-
-4.1.9 - Released 13 August 2005
-
-make ipfilter fix IPv4 header checksums for outgoing packets if BRIDGE_IPF
-is defined when compiled.
-
-move the definition of SIOCPROXY from ip_nat.h to ip_proxy.h
-
-make the BSD/upgrade script more instructive about the requiements for
-ip_rules.[ch] when it is run
-
-register for interface events on FreeBSD (>5.2.1) and NetBSD so that
-"ipf -y" is not not requried to tell ipfilter about interface changes.
-
-for "quick" rules that do "keep state", move the state adding into the rule
-evaluation so that we can detect it failing as rules are evaluated and
-continue on to the next rather than wait until we're done and it's too late
-to recover for more rule processing.
-
-mark ICMP packets advertising an MTU that's too small as being bad
-
-rework ipv6 header parsing to get better code reuse and fix logic errors
-in dealing with ipv6 packets containing fragment headers.  Also, where a
-protocol handler was doing both v4 & v6, make a seperate function for each.
-
-build for both amd64 and i86pc (32bit) on Solaris10 and later, if possible
-
-include start of work to get IPFilter working on AIX 5.3
-
-Use FI_ICMPERR flag rather than try to compute its equivalent all the time
-
-Rewrork IPv6 extension header parsing to get better code reuse
-
-Add missing timeout on Linux
-
-Fix for locking when reading from ipsync (Frank Volf)
-
-Fix insertion/appending of rules that use a collection number
-
-Somehow turning up the spl knob to splnet disappeared on platforms that still
-use the spl interface.
-
-fix problems with "ipf -T" not listing multiple variables properly
-
-4.1.8 - Released 29 March 2005
-
-include path from Phil Dibowitz for sorting ipfstat -t output by source or
-destination port.
-
-fix a bug in printing rules where interface names could not be printed,
-even if they're in the rule structure.
-
-fix BSD/kupgrade to correctly change ipfilter lkm Makefile for FreeBSD
-
-add 2 new features to SIOCGNATL:
-- if IPN_FINDFORWARD is set, check if the respective MAP is already
-  present in the outbound table
-- if IPN_IN is set, search for a matching MAP entry instead of RDR
-  (Peter Potsma)
-
-turn off function inlining for freebsd 5.3+
-
-UDP doesn't pullup enough data which can sometimes cause a panic.
-Fix other protocols, as required, where a similar problem may exist.
-
-overhaul the timeout queue management, especially that for user defined queues
-which are now only freed in an orderly manner.
-
-4.1.7 - Released 13 March 2005
-
-Using the GRE call field is almost impossible because it is unbalanced and
-both call fields are not present in each v1 header.
-
-Fix a problem where it was possible to load duplicate rules into ipf
-
-patch from John Wehle to address problems with fastroute on solaris
-
-Copying data out for ipf -z failed because it tried to copy out to an address
-that is a kernel pointer in user space.
-
-add "ip" timeout for both NAT & state that's for non-TCP/UDP/ICMP
-
-synch up with NetBSD's changes
-
-fix problems parsing long lines of text in the ftp proxy where they would not
-be parsed properly and stop the session from working
-
-enhance the PPTP proxy so that it tries to decode messages in the TCP stream
-so it knows when to create and destroy the state/nat sessions for GRE.  There
-are also 4 new regression tests for it, testing map/rdr rules.
-
-impose some limits on the size of data that can be moved with SIOCSTPUT in
-the NAT code and also prevent a duplicate session entry from being created
-using this method.
-
-add a new flag (IPN_FINDFORWARD) to NAT code that can be used with SIOCGNATL
-to check if it is possible to create an outgoing transparent NAT mapping to
-compliment the redirect being investigated.
-
-Linux requires that the checksums in the IP header get adjusted
-
-only resolve unknown interfaces in fr_stinsert, and nuke all interface pointers
-in SIOCSTPUT to prevent bad data being loaded from userspace.
-
-make the byte counting for state correct (was counting data from ICMP packet
-twice)
-
-print out the keyword "frag-body" if the flag is set.
-
-fix ipfs loading/restoring NAT sessions
-
-patch from Frank to correctly format IP addresses in ipfstat -t output
-
-parsing port numbers in ipf/ipnat was confusing as the port number was returned
-in an int that was also overloaded to be the suceess/failure.  instead, change
-the port using pass by reference and only use the return value for indicating
-success or failure.
-
-4.1.6 - Released 19 February 2005
-
-add a new timeout number to NAT (fr_defnatipage) that is used for all
-non-TCP/UDP/ICMP protocols - default 60 seconds.
-
-buffer leak with bad nat - David Gueluy
-
-fix memory leak with state entries created by proxies
-
-eliminate copying too much data into a scan buffer
-
-allow a trailing protocol name for map rules as well as rdr ones
-
-fix bug in parsing of <= and > for NAT rules (two were crossed over)
-
-FreeBSD's iplwrite hasn't kept pace with iplread's prototype
-
-expand documention on the karma of using "auto" in ipnat map rules
-
-add matching on IP protocol to ipnat map rules
-
-allow ippool definitions to contain no addresses to start with
-
-Linux NAT needs to modify the IP header checksum as it gets called after it
-has been computed by IP.
-
-UDP was missing a pullup for packet header information before examining
-the header
-
-4.1.5 - Released 9 January 2005
-
-all rules were being converted into "dup-to" rules in the kernel
-
-fix two ftp proxy problems: 1st, buffer needs to be bigger for fitting in
-complete RETR/CWD commands, 2nd is () use in 227 messages isn't copied
-over correctly.
-
-response to CWDs
-revert ip_off back to network byte order in the ICMP error packet that
-gets generated.
-
-4.1.4 - Released 9 January 2005
-
-force NAT rules to only match ipv4 NAT rules (which all are, currently,
-by default)
-
-include state synchronisation fixes from Frank Volf
-
-make the maximum log size for internally buffered log entries accessible
-via "ipf -T"
-
-redesign start of fr_check() to avoid putting duplicate information in
-ipfilter about how much data needs to be pulled up for a protocol to be
-properly filtered.
-
-tidy up sending ICMP error messages - some bad inputs could result in
-data not being freed and/or no error returned.
-
-make the maximum size of the log buffer run-time tunable
-
-fix bug in parsing TCP header when looking for MSS option that could make
-the system hang
-
-change pool lookups that fail to find a match to return "no match"
-rather than fail.
-
-add run-time tunable debugging for proxy support code and FTP proxy.
-
-fix state table updates for entries where the first packet as an ICMPv6
-multicast message
-
-fix hang when flushing state for v4/v6 and other (v6/v4) entries are present
-too
-
-attaching filtering to ipv6 pfil hook wasn't present for solaris
-
-don't allow rules with "keep state" and "with oow"
-
-move a bunch of userland only code from fil.c to ip_fil.c
-
-make fr_coalesce() more resiliant to bad input, just returning an error
-instead of crashing, making calling it easier in many places
-
-When m_pulldown doesn't return NULL, it doesn't necessarily return a pointer
-to the same mbuf passed in as the first arg.
-
-remove fr_unreach and use ENETUNREACH by default.
-
-printing out of tag data in ipf rules doesn't match input syntax
-
-ipftest(1) man page update
-
-ipfs command line option parsing still rejects some valid syntaxes
-
-SIGHUP handling by ipmon was not as safe as it could be
-
-fix various parsing regressions, including "<thishost>", "tcpudp", ordering
-of "keep" options
-
-patches from Frank Volk: add udp_acktimeout to sysctl list for FreeBSD,
-ICMP packet length not calculated correctly in send_icmp_err, reply-to
-not printed by ipfstat, keep state with icmp passing (mtrr)
-
-patches for return-rst and return-icmp from Attila Fueloep
-(lichtscheu@gesindel.org)
-
-4.1.3 - Released 18 July 2004
-
-do some more fine tuning on NAT checksum adjustments
-
-correct IP address byte order in proxy setup for ipsec/pptp
-
-man page updates
-
-fix numerous problems with ipfs operation
-
-complete new syntax for ipmon.conf in its parser and update the sample file
-
-assign error value consistantly in fastroute code
-
-rewrite allocation of mbufs in send_reset/send_icmp_err to better use
-mbuf clusters and size calculations
-
-resolve problem with linux panic'ing because the wrong flag was being
-passed to skb_clone/skb_alloc
-
-enable use of shared/exclusive locks on freebsd5 and above
-
-do not rely on m_pkthdr.len to be valid all the time for mbufs on modern BSD
-and so use mbufchainlen to get the mbuf length instead
-
-replace lots of COPYIN/COPYOUT with BCOPYIN/BCOPYOUT where the data is
-going to be on the stack and not in userland
-
-packet buffer pointers were not refreshed & used properly in fr_check()
-
-include extra bits for OpenBSD 3.4 & 3.5.
-
-fix ipf/ipnat parsing regression problems with v3.4
-
-4.1.2 - RELEASED - 27 May 2004
-
-add state top for ipv6
-
-fix numerous parsing regressions
-
-change sample proxies to use SIOCGNATL with the new API
-
-allow macro names to contain underscores (_)
-
-split the parser into a collection of dictionaries so that keywords do
-not interfere with resolving hostnames and portnames
-
-fix ipfrule LKM loading on freebsd
-
-support mapping a fixed range of ports to a single port
-
-fix timeout queue use by proxies with private queues
-
-handle space-led ftp server replies properly
-
-fix timeout queue management
-
-fix fastroute, generation of RST & ICMP packets and operation with to/fastroute
-
-resolve further linux compatibility problems
-
-replace the use of COPYIN with BCOPYIN for platforms that provide ioctl
-args on the stack
-
-allow flushing of ipv6 rules independant of ipv4 rules
-
-correct internal ipv6 checksum calculations
-
-if a 'keep state' rule fails to create state, block the packet rather
-than let it through
-
-correct all checksums in regression tests and correct NAT code to adjust
-checksums correctly.
-
-fix ipfs -R/-W
-
-4.1.1 - RELEASED - 24 March 2004
-
-allow new connections with the same port numbers as an existing one
-in the state table if the creating packet is a SYN
-
-timeout values have drifted, incorrectly, from what they were in 3.4
-
-FreeBSD - compatibility changes for 5.2
-
-don't match on sequence number (as well) for ICMO ECHO/REPLY, just the
-ICMP Id. field as otherwise thre is a state/NAT entry per packet pair
-rather than per "flow"
-
-fr_cksum() returned the wrong answer for ICMP
-
-Linux:
-- get return-rst and return-icmp working
-- treat the interface name the same as if_xname on BSD
-
-adjust expectations for TCP urgent bits based on observed traffic in the
-wild
-
-openbsd3.4 has ip_len/ip_off in network byte order when ipfilter is called
-
-fix flushing of hash pool gorups (ippool -F) as well as displaying them
-(ippool -l)
-
-passing of pointers to interface structures wrong for HP-UX/Solaris with
-return-* rules.
-
-Make the solaris boot script able to run on 2.5.1
-
-ippool related files missing from Solaris packages
-
-The name /dev/ippool should be /dev/iplookup
-
-add regression testing for parsing long interface names in nat rules,
-along with mssclamp and tags.  Also add test for mssclamp operation.
-
-ttl displayed for "ipfstat -t" is wrong because ttl is not computed.
-
-parse logical interface names (Sun)
-
-unloading LKMs was only working if they were enabled.
-
-sync'ing up NAT sessions when NICs change should cause NAT rules to
-re-lookup name->pointer mappings
-
-not all of the ippool ioctl's are IOWR and they should be because they
-use the ipfobj_t for passing information in/out of the kernel.  leave the
-old values defined and handle them, for compatibility.
-
-pool stats wrong: ippoolstate used where ipoolstat should be, hash table
-  statistics not reported at all
-
-fr_running not set correctly for OpenBSD when compiled into the kernel
-
-Allow SIOCGETFF while disabled
-
-Fix mssclamp with NAT (pasing and printing of the word, plus wrong bytes
-altered.  How do you say "untested" ?)
-
-4.1 - RELEASED - 12 February 2004
-
-4.0-BETA1 20 August 2003
-
-support 0/32 and 0/0 on the RHS in redirect rules
-
-where LHS and RHS netmasks are the same size for redirect, do 1:1 mapping
-for bimap rules.
-
-allow NAT rule to match 'all' interfaces with * as interface name
-
-do mapping of ICMP sequence id#'s in pings
-
-allow default age for NAT entries to be set per NAT rule
-
-provide round robin selection of destination addresses for redirect
-
-ipmon can load a configuration file with instructions on actions
-to take when a matching log entry is received
-
-now requires pfil to work on Solaris & HP-UX
-
-supports mapping outbound connections to a specific address/port
-
-support toggling of logging per ipfilter 'device'
-
-use queues to expire data rather than lists
-
-add MSN RPC proxy
-
-add IRC proxy
-
-support rules with dynamic ip addresses
-
-add ability to define a pool of addresses & networks which can then
-be placed in a single rule
-
-support passing entire packet back to user program for authentication
-
-support master/slave for state information sharing
-
-reorganise generic code into a lib directory and make libipf.a
-
-user programs enforce version matching with the kernel
-
-supports window scaling if seen at TCP session setup
-
-generates C code from filter rules to compile in or load as native
-machine code.
-
-supports loading rules comprised of BPF bytecode statements
-
-HP-UX 11 port completed
-
-and packets-per-second filtering
-
-add numerical tags to rules for filtering and display in ipmon output
-
-3.4.4 23/05/2000 - Released
-
-don't add TCP state if it is an RST packet and (attempt) to send out
-RST/ICMP packets in a manner that bypasses IP Filter.
-
-add patch to work with 4.0_STABLE delayed checksums
-
-3.4.3 20/05/2000 - Released
-
-fix ipmon -F
-
-don't truncate IPv6 packets on Solaris
-
-fix keep state for ICMP ECHO
-
-add some NAT stats and use def_nat_age rather than DEF_NAT_AGE
-
-don't make ftp proxy drop packets
-
-use MCLISREFERENCED() in tandem with M_EXT to check if IP fields need to be
-swapped back.
-
-fix up RST generation for non-Solaris
-
-get "short" flag right for IPv6
-
-3.4.2 - 10/5/2000 - Released
-
-Fix bug in dealing with "hlen == 1 and opt > 1" - Itojun
-
-ignore previous NAT mappings for 0/0 and 0/32 rules
-
-bring in a completely new ftp proxy
-
-allow NAT to cause packets to be dropped.
-
-add NetBSD callout support for 1.4-current
-
-3.4.1 - 30/4/2000 - Released
-
-add ratoui() and fix parsing of group numbers to allow 0 - UINT_MAX
-
-don't include opt_inet6.h for FreeBSD if KLD_MODULE is defined
-
-Solaris must use copyin() for all types of ioctl() args
-
-fix up screen/tty when leaving "top mode" of ipfstat
-
-linked list for maptable not setup correctly in nat_hostmap()
-
-check for maptable rather than nat_table[1] to see if malloc for maptable
-succeeded in nat_init
-
-fix handling of map NAT rules with "from/to" host specs
-
-fix printout out of source address when using "from/to" with map rules
-
-convert ip_len back to network byte order, not plen, for solaris as ip_len
-may have been changed by NAT and plen won't reflect this
-
-3.4 - 27/4/2000 - Released
-
-source address spoofing can be turned on (fr_chksrc) without using
-filter rules
-
-group numbers are now 32bits in size, up from 16bits
-
-IPv6 filtering available
-
-add frank volf's state-top patches
-
-add load splitting and round-robin attribute to redirect rules
-
-FreeBSD-4.0 support (including KLD)
-
-add top-style operation mode for ipfstat (-t)
-
-add save/restore of IP Filter state/NAT information (ipfs)
-
-further ftp proxy security checks
-
-support for adding and removing proxies at runtime
-
-3.3.13  26/04/2000 - Released
-
-Fix parsing of "range" with "portmap"
-
-Relax checking of ftp replies, slightly.
-
-Fix NAT timeouts for ICMP packets
-
-SunOS4 patches for ICMP redirects from Jurgen Keil (jk@tools.de)
-
-3.3.12  16/03/2000 - Released
-
-tighten up ftp proxy behaviour.  sigh.  yuck.  hate.
-
-fix bug in range check for NAT where the last IP# was not used.
-
-fix problem with icmp codes > 127 in filter rules caused bad things to
-happen and in particular, where #18 caused the rule to be printed
-erroneously.
-
-fix bug with the spl level not being reset when returning EIO from
-iplioctl due to ipfilter not being initialized yet.
-
-3.3.11  04/03/2000 - Released
-
-make "or-block" work with lines that start with "log"
-
-fix up parsing and printing of rules with syslog levels in them
-
-fix from Cy Schubert for calling of apr_fini only if non-null
-
-
-3.3.10	24/02/2000 - Released
-
-* fix back from guido for state tracking interfaces
-
-* update for NetBSD pfil interface changes
-
-* if attaching fails and we can abort, then cleanup when doing so.
-
-julian@computer.org:
-* solaris.c (fr_precheck): After calling freemsg on mt, set it point to *mp.
-* ipf.c (packetlogon): use flag to store the return value from get_flags.
-* ipmon.c (init_tabs): General cleanup so we do not have to cast
-  an int s->s_port to u_int port and try to check if the u_int port
-  is less than zero.
-
-3.3.9	15/02/2000 - Released
-
-fix scheduling of bad locking in fr_addstate() used when we attach onto
-a filter rule.
-
-fix up ip_statesync() with storing interface names in ipstate_t
-
-fix fr_running for LKM's - Eugene Polovnikov
-
-junk using pullupmsg() for solaris - it's next to useless for what we
-need to do here anyway - and implement what we require.
-
-don't call fr_delstate() in fr_checkstate(), when compiled for a user
-program, early but when we're finished with it (got fr & pass)
-
-ipnat(5) fix from Guido
-
-on solaris2, copy message and use that with filter if there is another
-copy if it being used (db_ref > 1).  bad for performance, but better
-than causing a crash.
-
-patch for solaris8-fcs compile from Casper Dik
-
-3.3.8	01/02/2000 - Released
-
-fix state handling of SYN packets.
-
-add parsing recognition of extra icmp types/codes and fix handling of
-icmp time stamps and mask requests - Frank volf
-
-3.3.7	25/01/2000 - Released
-
-sync on state information as well as NAT information when required
-
-record nat protocol in all nat log records
-
-don't reuse the IP# from an active NAT session if the IP# in the rule
-has changed dynamically.
-
-lookup the protocol for NAT log information in ipmon and pass that to
-portname.
-
-fix the bug with changing the outbound interface of a packet where it
-would lead to a panic.
-
-use fr_running instead of ipl_inited. (sysctl name change on freebsd)
-
-return EIO if someone attempts an ioctl on state/nat if ipfilter is not
-enabled.
-
-fix rule insertion bug
-
-make state flushing clean anything that's not fully established (4/4)
-
-call fr_state_flush() after we've released ipf_state so we don't generate
-a recursive mutex acquisition panic
-
-fix parsing of icmp code after return-icmp/return-icmp-as-dest and add
-some patches to enhance parsing strength
-
-3.3.6	28/12/1999 - Released
-
-add in missing rwlock release in fr_checkicmpmatchingstate() and fix check
-for ICMP_ECHO to only be for packet, not state entry which we don't have yet.
-
-handle SIOCIPFFB in nat_ioctl() and fr_state_ioctl()
-
-fix size of friostat for SunOS4
-
-fix bug in running off the end of a buffer in real audio proxy
-
-3.3.5	11/12/1999 - Released
-
-fix parsing of "log level" and printing it back out too
-
-<net/if_types.h> is only present on Solaris2.6/7/8
-
-use send_icmp_err rather than icmp_error to send back a frag-needed error
-when doing PMTU
-
-do not use -b with add_drv on Solaris unless $BASEDIR is set.
-
-fix problem where source address in icmp replies is reversed
-
-fix yet another problem with real audio.
-
-3.3.4	4/12/1999 - Released
-
-fix up the real audio proxy to properly setup state information and NAT
-entries, thanks to Laine Stump for testing/advice/fixes.
-
-fix ipfr_fastroute to set dst->sin_addr (Sean Farley - appears to prevent
-FreeBSD 3.3 from panic'ing) as this had been removed in prior hacks to this
-routine.
-
-fix kinstall for BSDI
-
-support ICMP errors being allowed through for ICMP packets going out with
-keep state enabled
-
-support hardware checksumming (gigabit ethernet cards) on Solaris thanks to
-Tel.Net Media for providing hardware for testing.
-
-patched from Frank Volf for ipmon (ICMP & fragmented packets) and allowing
-ICMP responses to ICMP packets in the keep state table.
-
-add in patches for hardware checksumming under solaris
-
-Solaris install scripts now use $BASEDIR as appropriate.
-
-add Solaris8 support
-
-fix "ipf -y" on solaris so that it rescans rules also for changes in
-interface pointers
-
-let ipmon become a daemon with -D if it is using syslog
-
-fix parsing of return-icmp-as-dest(foo)
-
-add reference to ipfstat -g to ipfstat.8
-
-ipf_mutex needs to be declared for irix in ip_fil.c
-
-3.3.3	22/10/1999 - Released
-
-add -g command line option to ipfstat to show groups still define.
-
-fix problem with fragment table not recording rule pointer when called
-from state functions (fin_fr not set).
-
-fixup fastroute problems with keep state rules.
-
-load rules into inactive set first, so we don't disable things like NIS
-lookups half way through processing - found by Kevin Littlejohn
-
-fix handling of unaligned ip pointer for solaris
-
-patch for fr_newauth from Rudi Sluijtman
-
-fixed htons() bug in fr_tcpsum() where ip_p wasn't cast to u_short
-
-3.3.2	23/09/1999 - Released
-
-patches from Scott Presnell to fix rcmd proxy
-
-patches from Greg to fix Solaris detachment of interfaces
-
-add openbsd compatibility fixes
-
-fix free'ing already freed memory in ipfr_slowtimer()
-
-fix for deferencing invalid memory in cleaning up after a device disappears
-
-3.3.1	14/8/1999 - Released
-
-remove include file sys/user.h for irix
-
-prevent people from running buildsunos directly
-
-fix up some problems with the saving of rule pointers so that NAT saves
-that information in case it should need to call fr_addstate() from a proxy.
-
-fix up scanning for the end of FTP messages
-
-don't remove /etc/opt/ipf in postremove
-
-attempt to prevent people running buildsolaris script without doing a
-"make solaris"
-
-fix timeout losing on freebsd3
-
-3.3	7/8/1999 - Released
-
-NAT: information (rules, mappings) are stored in hash tables; setup some
-basic NAT regression testing.
-
-display version name of installed kernel code when initializing.
-
-add -V command line option to ipf, showing version (program and kernel
-module) as well as the run-status of the kernel code.
-
-fix problem with "log" rules actually affecting result of filtering.
-
-automatically use SUNWspro if available and on a 64bit Solaris system for
-compiling.
-
-add kernel proxies for rcmd(3) and RealAudio (PNA)
-
-use timeout/untimeout on SunOS4/BSD platforms too rather than hijacking
-ip_slowtimo
-
-fix IP headers generated through parsing of text information
-
-fix NAT rules to be in the correct order again.
-
-make keep-state work with to/fastroute keywords and enforce usage of those
-interfaces.
-
-update keep-state code with new algorithm from Guido
-
-add FreeBSD-3 support
-
-add return-icmp-as-dest option to retrun an ICMP packet using the original
-destination as the source rather than a local IP address
-
-add "level [facility.]<priority>" option to filter language
-
-add changes from Guido to state code.
-
-add code to return EPERM if the device is opened for writing and we're
-in securelevel 2 or greater.
-
-authentication code patches from Guido
-
-fix real audio proxy
-
-fix ipmon rule printing of interfaces and add IN/OUT to the end of ipmon
-log output.
-
-fix bimap rules with hash tables
-
-update addresses used in NAT mappings for 0/32 rules for any protocol but TCP
-if it changes on the interface - check every ip_natexpire()
-
-add redirect regression test
-
-count buckets used in the state hash table.
-
-fix sending of RST's with return-rst to use the ack number provided in
-the packet being replied to in addition to the sequence number.
-
-fix to compile as a 64bit application on solaris7-64bit
-
-add NAT IP mapping to ranges of IP addresses that aren't CIDR specified
-
-fix calculation of in_space parameter for NAT
-
-fix `wrapping' when incrementing the next ip address for use in NAT
-
-fix free'ing of kernel memory in ip_natunload on solaris
-
-fix -l/-U command line options from interfering with each other
-
-fix fastroute under solaris2 and cleanup compilation for solaris7
-
-add install scripts and compile cleanly on BSD/OS 4.0
-
-safely open files in /tmp for writing device output when testing.
-
-fix uninitialized pointer bug in NAT
-
-fix SIOCZRLST (zero list rule stats) bug with groups
-
-change some usage of u_short to u_int in function calling
-
-fix compilation for Solaris7 (SUNWspro)
-
-change solaris makefiles to build for either sparc or i386 rather than
-per-cpu (sun4u, etc).
-
-fixed bug in ipllog
-
-add patches from George Michaelson for FreeBSD 3.0
-
-add patch from Guido to provide ICMP checking for known state in the same
-manner as is done for NAT.
-
-enable FTP PASV proxying and enable wildcarding in NAT/state code for ports
-for better PORT/PASV support with FTP.
-
-bring into main tree static nat features: map-block and "auto" portmapping.
-
-add in source host filtering for redirects (alan jones)
-
-3.2.10		22/11/98 - Released
-
-3.2.10beta9	17/11/98 - Released
-
-fix fr_tcpsum problems in handling mbufs with an odd number of bytes
-and/or split across an mbuf boundary
-
-fix NAT list entry comparisons and allow multiple entries for the same
-proxy (but on different ports).
-
-don't create duplicate NAT entries for repeated PORT commands.
-
-3.2.10beta8	14/11/98 - Released
-
-always exit an rwlock before expecting to enter it again on solaris
-
-fix loop in nat_new for pre-existing nat
-
-don't setup state for an ftp connection if creating nat fails.
-
-3.2.10beta7	05/11/98 - Released
-
-set fake window in ipft_tx.c to ensure code passes tests.
-
-cleaned up/enhanced ipnat -l/ipnat -lv output
-
-fixed NAT handling of non-TCP/UDP packets, esp. for ICMP errors returned.
-
-Solaris recusive mutex on icmp-error/tcp-reset - requires rwlock's rather
-than mutexes.
-
-3.2.10beta6	03/11/98 - Released
-
-fix mixed use of krwlock_t and kmutex_t on Solaris2
-
-fix FTP proxy back up, splitting pasv code out of port code.
-
-3.2.10beta5	02/11/98 - Released
-
-fixed port translation in ICMP reply handling
-
-3.2.10beta4	01/11/98 - Released
-
-increase useful statistic collection on solaris
-
-filter DL_UNITDATA_REQ as well as DL_UNITDATA_IND on solaris
-
-disable PASV reply translation for now
-
-fail with an error if we try to load a NAT rule with a non-existant
-   proxy name - Guido
-
-fix portmap usage with 0/0 and 0/32 map rules
-
-remove ap_unload/ap_expire - automatically done when NAT is cleaned up
-
-print "STATE:CLOSED" from ipmon if the connection progresses past established
-   rather than "STATE:EXPIRED"
-
-3.2.10beta3	26/10/98 - Released
-
-fixed traceroute/nat problem
-
-rewrote nat/proxy interface
-
-ipnat now lists associated proxy sessions for each NAT where applicable
-
-3.2.10beta2	13/10/98 - Released
-
-use KRWLOCK_T in place of krwlock_t for solaris as well as irix
-
-disable use of read-write lock acquisition by default
-
-add in mb_t for linux, non-kernel
-
-some changes to progress compilation on linux with glibc
-
-change PASV as well as PORT when passed through kernel ftp proxy.
-
-don't allow window to become 0 in tcp state code
-
-make ipmon compile cleaner
-
-irix patches
-
-3.2.10beta	11/09/98 - Released
-
-stop fr_tcpsum() thinking it has run out of data when it hasn't.
-
-stop solaris panics due to fin_dp being something wild.
-
-revisit usage of ATOMIC_*()
-
-log closing state of TCP connection in "keep state"
-
-fix fake-arp table code for ipsend.
-
-ipmon now writes pid to a file.
-
-fix "ipmon -a" to actually activate all logging devices.
-
-add patches for BSDOS4.
-
-perl scripts for log analysis donated.
-
-3.2.9	22/06/98 - Released
-
-fix byte order for ICMP packets generated on Solaris
-
-fix some locking problems.
-
-fix malloc bug in NAT (introduced in 3.2.8).
-
-patch from guido for state connections that get fragmented
-
-3.2.8	08/06/98 - Released
-
-use readers/writers locks in Solaris2 in place of some mutexes.
-
-Solaris2 installation enhancements - Martin Forssen (maf@carlstedt.se)
-
-3.2.7	24/05/98 - Released
-
-u_long -> u_32_t conversions
-
-patches from Bernd Ernesti for NetBSD
-
-fixup ipmon to actually handle HUP's.
-
-Linux fixes from Michael H. Warfield (mhw@wittsend.com)
-
-update for keep state patch (not security related) - Guido
-
-dumphex() uses stdout rather than log
-
-3.2.6	18/05/98 - Released
-
-fix potential security loop hole in keep state code.
-
-update examples.
-
-3.2.5	09/05/98 - Released
-
-BSD/OS 3.1 .o files added for the kernel.
-
-fix sequence # skew vs window size check.
-
-fix minimum ICMP header size check.
-
-remove references to Cybersource.
-
-fix my email address.
-
-remove ntohl in ipnat - Thomas Tornblom
-
-3.2.4	09/04/98 - Released
-
-add script to make devices for /dev on BSD boxes
-
-fixup building into the kernel for FreeBSD 2.2.5
-
-add -D command line option to ipmon to make it a daemon and SIGHUP causes
-it to close and reopen the logfile
-
-fixup make clean and make package for SunOS5 - Marc Boucher
-
-postinstall keeps adding "minor=ipf ipl" - George Ross <gdmr@dcs.ed.ac.uk>
-
-protected by IP Filter gif - Sergey Solyanik <solik@atom.ru>
-
-3.2.3	10/11/97 - Released
-
-fix some iplang bugs
-
-fix tcp checksum data overrun, sgi #define changes,
-avoid infinite loop when nat'ing to single IP# - Marc Boucher
-
-fixup DEVFS usage for FreeBSD
-
-fix sunos5 "make clean" cleaning up too much
-
-3.2.2	28/11/97 - Released
-
-change packet matching to return actual error, if bad packet, to facilitate
-ECONNRESET for TCP.
-
-allow ip:netmask in grammar too now - Guido
-
-assume IRIX has u_int32_t in sys/types.h (needed for R10000)
-
-rewrite parts of command line options for ipmon
-
-fix TCP urgent packet & offset testing and add LAND attack test for iptest
-
-fix grammar error in yacc grammar for iplang
-
-redirect (rdr) destination port bytes-wapped when it shouldn't be.
-
-general: fr_check now returns error code, such as EHOSTUNREACH or
-ECONNRESET (attempt to make ECONNRESET work for locally outbound
-packets).
-
-linux: enable return-rst, need to filter tcp retransmits which are sent
-       separately from normal packets
-
-memory leak plugged in ip_proxy.c
-
-BSDI compatibility patches from Guido
-
-tcp checksum fix - Marc Boucher
-
-recursive mutex and ioctl param fix - Marc Boucher
-
-3.2.1	12/11/97 - Released
-
-port to BSD/OS 3.0
-
-port to Linux 2.0.31
-
-patches to make "map a/m -> 0/0" work with ftp proxying properly - Marc Boucher
-
-add "ipf -F s" and "ipf -F S" to flush state table entries.
-
-announce if logging is on or off when ip filter initializes.
-
-"ipf -F a" doesn't flush groups properly for Solaris.
-
-3.2		30/10/97 - Released
-
-ipnat doesn't successfully remove proxy mappings with "-rf" -
-Alexander Romanyu
-
-use K&R C function style for solaris kernel code
-
-use m_adj() to decrease packet size in ftp proxy
-
-use mbufchainlen rather than msgdsize,
-IRIX update - Marc Boucher
-
-fix NetBSD modunload bug (pfil_add_hook done twice)
-
-patches for OpenBSD 2.1 - Craig Bevins <craigb@bitcom.net.au>
-
-3.2beta10	24/10/97 - Released
-
-fix fragment table entries allocated for NAT.
-
-fix tcp checksum calculations over mbuf/mblk boundaries
-
-fix panic for blen < 0 in ftp kernel proxy - marc boucher
-
-fix flushing of rules which have been grouped.
-
-3.2beta9	20/10/97 - Released
-
-some nit picking on solaris2 with SUNWspro - Michael Lyle <mrl@rpnet.net>
-
-ftp kernel proxy patches from Marc Boucher
-
-3.2beta8	13/10/97 - Released
-
-add support for passing ICMP errors back through NAT.
-
-IRIX port update - Marc Boucher
-
-calculate correct MIN size of packet to log for UDP - Marc Boucher
-
-need htons(ETHERTYPE_x) on little endian BSD boxes - Dave Huang
-
-copyright header fixups
-
-3.2beta7	23/09/97 - Released
-
-fickup problems introduced by prior merges & changes.
-
-3.2beta6	23/09/97 - Released
-
-patch for spin-reading race condition - Marc Boucher.
-
-IRIX port by Marc Boucher.
-
-compatibility updates for Linux to ipsend
-
-3.2beta5	13/09/97 - Released
-
-patches from Bernd Ernesti for NetBSD integration (mostly prototyping and
-compiler warning things)
-
-ipf -y will resync IP#'s allocated with 0/32 in NAT to match interface if it
-changes.
-
-update manual pages and other documentation updates.
-
-3.2beta4	27/8/97 - Released
-
-enable setting IP and TCP options for iplang/
-
-Solaris2 patches from Marc Boucher.
-
-add groups for filter rules.
-
-3.2beta3	21/8/97 - Released
-
-patches for Solaris2 (interface panic solution ?): fix FIONREAD and
-replacing q_qinfo points - Marc Boucher <marc@CAM.ORG>
-
-change ipsend/* and ipsd/* copyright notices to be the same as ip filter's
-
-patch for SYN-ACK skew testing fix from Eric V. Smith <EricSmith@windsor.com>
-
-3.2beta2	6/8/97 - Released
-
-make it load on Solaris 2.3
-
-rewrote logging to remove solaris errors, introduced checking to see if the
-same packet is logged successively.
-
-fix filter cache to work when there are no rules loaded.
-
-add "raw" option to ipresend to send entire ethernet frames.
-
-nat list corruption bug - NetBSD - Klaus Klein
-
-3.2beta1	5/7/97 - Released
-
-patches from Jason Thorpe fixing: UNSIGNED_CHAR lossage, off_t being 64bits
-lossage, and other NetBSD bits.
-
-NetBSD 1.2G update.
-
-fixup fwtk patches and add protocol field for SIOCGNATL.
-
-rdr bugs reported by Alexander Romanyu (alexr@aix.krid.crimea.ua), with
-fixes:
-* rdr matched all packets of a given protocol (ignored ports).
-* severe bug in nat_delete which caused system crash/freeze.
-
-change Makefile so that CC isn't passed on for FreeBSD/NetBSD (will use
-the default CC - cc, not gcc)
-
-3.2alpha9	16/6/97 - Released
-
-added "skip" keyword.
-
-implement preauthentication of packets, as outlined by Guido.
-
-Make it compile as cleanly as possible with -Wall & general code cleanup
-
-getopt returns int, not char. Bernd Ernesti
-
-3.2alpha8	13/6/97 - Released
-
-code added to support "auth" rules which require a user program to allow them
-through.  First revision and much of the code came from Guido.
-
-hex output from ipmon doesn't goto syslog when recovering from out of sync
-error.  Luke Mewburn (lukem@connect.com.au)
-
-fix solaris2.6 lookup of destination ire's.
-
-ipnat doesn't throw away unused bits (after masking), causing it to
-behave incorrectly. Carson Gaspar
-
-NAT code doesn't include inteface name when matching - Alexey Mavrin
-<lha@elco.spb.ru>
-
-replace old SunOS tcpip.h with new tcpip.h (from 4.4BSD) - Jason Thorpe.
-
-update install procedures to include ip_proxy.c
-
-mask out unused bits in NAT/RDR rules.
-
-use a generic type (u_32_t) for 32bit variables, rather than rely on
-u_long being such - Jason Thorpe.
-
-create a local "netinet" directory and include from ~netinet/*" rather than
-just "*" to make keeping the code working on ports easier.
-
-add an m_copydata and m_copyback for SunOS4 (based on 4.4BSD-Lite versions)
-
-documentation updates.
-
-NetBSD update from Jason Thorpe <thorpej@netbsd.org>
-
-allow RST's through with a matching SEQ # and 0 ACK.  Guido Van Rooij
-
-ipmon uses excessive amounts of CPU on Solaris2 - Reinhard Bertram
-<Reinhard.Bertram@KOM.th-darmstadt.de>
-
-3.2alpha7	25/5/97 - Released
-
-add strlen for pre-2.2 kernels - Doug Kite <dkite@websgi.icomnet.com>
-
-setup bits and pieces for compiling into a FreeBSD-2.2 kernel.
-
-split up "bsd" targets.  Now a separate netbsd/freebsd/bsd target.
-mln_ipl.c has been split up into itself and mlf_ipl.c (for freebsd).
-
-fix (negative) host matching in filtering.
-
-add sysctl interface for some variables when compiled into FreeBSD-2.2 kernels
-or later.
-
-make all the candidates for kernel compiling include "netinet/..." and build
-a subdirectory "netinet" when compiling and symlink all .h files into this.
-
-add install make target to Makefile.ipsend
-
-3.2alpha6	8/5/97 - Released
-
-Add "!" (not) to hostname/ip matching.
-
-Automatically add packet info to the fragment cache if it is a fragment
-and we're translating addreses for.
-
-Automatically add packet info to the fragment cache if it is a fragment
-and we're "keeping state" for the packet.
-
-Solaris2 patches - Anthony Baxter (arb@connect.com.au)
-
-change install procedure for FreeBSD 2.2 to allow building to a kernel
-which is different to the running kernel.
-
-add FIONREAD for Solaris2!
-
-when expiring NAT table entries, if we would set a time to fr_tcpclosed
-(which is 1), make it fr_tcplaskack(20) so that the state tables have a
-chance to clear up.
-
-3.2alpha5
-
-add proxying skeleton support and sample ftp transparent proxy code.
-
-add printfs at startup to tell user what is happening.
-
-add packets & bytes for EXPIRE NAT log records.
-
-fix the "install-bsd" target in the root Makefile. Chris Williams
-<psion@mv.mv.com>
-
-Fixes for FreeBSD 2.2 (and later revs) to prevent panics.  Julian Assange.
-
-3.2alpha4	2/4/97 - Released
-
-Some compiler warnings cleaned up.
-
-FreeBSD-2.2 patches for LKM completed.
-
-3.2alpha3	31/3/97 - Released
-
-ipmon changes: -N for reading NAT logfile, -S for reading state logfile.
--a for reading all.  -n now toggles hostname resolution.
-
-Add logging of new state entries and expiration of old state entries.
-count log successes and failures.
-
-Add logging of new NAT entries and expiration of old NAT entries.
-count log successes and failures.
-
-Use u_quad_t for records of bytes & packets where kept
-(IP Accounting: fr_hits, fr_bytes; IP state: is_pkts, is_bytes).
-
-Fixup use of CPU and DCPU in Makefiles.
-
-Fix broken 0/32 NAT mapping. Carl Makin <cmakin@nla.gov.au>
-
-3.2alpha2
-
-Implement mapping to 0/32 as being an alias for automatically using the
-interface's first IP address.
-
-Implement separate minor devices for both NAT and IP state code.
-
-Fully prototype all functions.
-
-Fix Makefile problem due to attempt to fix Sun compiling problems.
-
-3.1.10		23/3/97 - Released
-
-ipfstat -a requires a -i or -o command line option too.  Print an error
-when not present rather than attempt to do something.
-
-patch updates for SunOS4 for kernel compiling.
-patch for ipmon -s (flush's syslog file which isn't good).  Andrew J. Schorr
-<schorr@ead.dsa.com>
-
-too many people hit their heads hard when compiling code into the kernel
-that doesn't let any packets through. (fil.c - IPF_NOMATCH)
-
-icmp-type parsing doesn't return any errors when it isn't constructed
-correctly.  Neil Readwin
-
-Using "-conf" with modload on SunOS4 doesn't work.
-Timothy Demarest <demarest@arraycomm.com>
-
-Need to define ARCH in makefile for SunOS4 building.  "make sunos4"
-in INSTALL.SunOS is incorrect. James R Grinter <jrg@blodwen.demon.co.uk>
-[all SunOS targets now run buildsunos]
-
-NAT lookups are still incorrect, matching non-TCP/UDP with TCP/UDP
-information. ArkanoiD <ark@paranoid.convey.ru>
-
-Need to check for __FreeBSD_version being 199511 rather than 199607
-in mln_ipl.c. Eric Feillant <Eric.Feillant@EUnet.fr>
-
-3.1.9		8/3/97 - Released
-
-fixed incorrect lookup of active NAT entries.
-
-patch for ip_deq() wrong for pre 2.1.6 FreeBSD.
-fyeung@fyeung8.netific.com (Francis Yeung)
-
-check for out with return-rst/return-icmp at wrong place - Erkki Ritoniemi
-(erkki@vlsi.fi)
-
-text_readip returns the interface pointer pointing to text on stack -
-Neil Readwin
-
-fix from Pradeep Krishnan for printout rules "with not opt sec".
-
-3.1.8		18/2/97 - Released
-
-Diffs for ip_output.c and ip_input.c updated to fix bug with fastroute and
-compiling warnings about reuse of m0.
-
-prevent use of return-rst and return-icmp with rules blocking packets going
-out, preventing panics in certain situations.
-
-loop forms in frag cache table - Yury Pshenychny <yura@rd.zgik.zaporizhzhe.ua>
-
-should use SPLNET/SPLX around expire routines in NAT/frag/state code.
-
-redeclared malloc in 44arp.c - 
-
-3.1.7		8/2/97 - Released
-
-Macros used for ntohs/htons supplied with gcc don't always work very well
-when the assignment is the same variable being converted.
-
-Filter matching doesn't not match rule which checks tcp flags on packets
-which are fragments - David Wilson
-
-3.1.7beta	30/1/97 - Released
-
-Fix up NAT bugs introduced in last major change (now tested), including
-nat_delete(), nat_lookupredir(), checksum changes, etc.
-
-3.1.7alpha	30/1/97 - Released
-
-Many changes to NAT code, including contributions from Laurent Joncheray
-<lpj@ans.net>
-
-Use "NO_SLEEP" when allocating memory under SunOS.
-
-Make kernel printf's nicer for BSD/SunOS4
-
-Always do a checksum for packets being filtered going out and being
-processed by fastroute.
-
-Leave kernel to play with cdevsw on *BSD systems with LKM's.
-
-ipnat.1 man page fixes.
-
-3.1.6		21/1/97 - Released
-
-Allow NAT to work on BSD systems in conjunction with "pass .. to ifname"
-
-Memory leak introduced in 3.1.3 in NAT lists, clearing of NAT table tried
-to free memory twice.
-
-NAT recalculates IP header checksum based on difference between IP#'s and
-port numbers - should be just IP#'s (Solaris2 only)
-
-3.1.5		13/1/97 - Released
-
-fixed setting of NAT timeouts and use different timeouts for concurrent
-TCP sessions using the same IP# mapping (when port mapping isn't used)
-
-multiple loading/unloading of LKM's doesn't clean up cdevsw properly for
-*BSD systems.
-
-3.1.4		10/1/97	- Released
-
-add command line options -C and -F to ipnat to flush NAT list and table
-
-ipnat -l loops on output - Neil Readwin (nreadwin@nysales.micrognosis.com)
-
-NetBSD/FreeBSD kernel malloc changes - Daniel Carosone
-
-3.1.3		10/1/97 - Released
-
-NAT chains not constructed correctly in hash tables - Antony Y.R Lu
-(antony@hawk.ee.ncku.edu.tw)
-
-Updated INSTALL.NetBSD, INSTALL.FreeBSD and INSTALL.Sol2
-
-man page update (ipf.5) from Daniel Carosone (dan@geek.com.au)
-
-ICMP header checksum update now included in NAT.
-
-Solaris2 needs to modify IP header checksums in ip_natin and ip_natout.
-
-3.1.2		4/12/96 - Released
-
-ipmon doesn't use syslog all the time when given -s option
-
-fixed mclput panic in ip_input.c and replace ntohs() with NTOHS() macro
-
-check the results of hostname resolution in ipnat
-
-"make *install" fixed for subdirectories.
-
-problems with "ARCH:=" and gnu make resolved
-
-parser reports an error for lines with whitespaces only rather than skipping
-them. D.Carosone@abm.com.au (Daniel Carosone)
-
-patches for integration into NetBSD-current (post 1.2).
-
-add an option to allow non-IP packets going up/down the stream on Solaris2
-to be dropped. John Bass.
-
-3.1.2beta	21/11/96 - Released
-
-make ipsend compile on Linux 2.0.24
-
-changes to TCP kept state algorithm, making it watch state on TCP
-connections in both directions.  Also use the same algorithm for NAT TCP.
-
--Wall cleanup - Bernd Ernesti
-
-added "or-block" for "pass .. log or-block" after a suggestion from
-David Oppenheim (davido@optimation.com.au)
-
-added subdirectories for building IP Filter in SunOS5/BSD for different
-cpu architecures
-
-Solaris2 fixes to logging and pre-filtering packet processing - 3.1.1p2
-
-mbuf logging not using mtod(), remove iplbusy - 3.1.1p1		1/11/96
-
-3.1.1		28/10/96 - Released
-
-Installation script fixes and deinstall scripts for IP Filter on:
-SunOS4/FreeBSD/NetBSD
-
-Man page fixes - Paul Dubois (dubois@primate.wisc.edu)
-
-Fix use of SOLARIS macro in ipmon, rewrote ipllog() (again!)
-
-parsing isn't completely case insensitive - David Wilson
-(davidw@optimation.com.au)
-
-Release ipl_mutex across uiomove() calls
-
-print entire rule entries out for "ipf -z" when zero'ing per-rule stats.
-
-ipfstat returns same output for "hits" in "ipfstat -aio" - Terletsky Slavik
-(ts@polynet.lviv.ua)
-
-New algorithm for setting timeouts for TCP connection (more closely follow
-TCP FSM) - Pradeep Krishnan (pkrishna@netcom.com)
-
-Track both window sizes for TCP connections through "keep state".
-
-Solaris2 doesn't like _KERNEL defined in stdargs.h - Jos van Wezel
-(wezel@bio.vu.nl)
-
-3.1.1-beta2	6/10/96 - Released
-
-Solaris2 fastroute/dup-to/to now works
-
-ipmon `record' reading rewritten
-
-Added post-NetBSD1.2 packet filter patches - Mathew Green (mrg@eterna.com.au)
-
-Attempt to use in_proto.c.diff, not "..diffs" for SunOS4 - David Wilson
-(davidw@optimation.com.au)
-
-Michael Ryan (mike@NetworX.ie) reports the following:
-* The Trumpet WinSock under Windows always sends its SYN packet with an ACK
-  value of 1, unlike any other implementation I've seen, which would set it
-  to zero.  The "keep state" feature of IP Filter doesn't work when receiving
-  non-zero ACK values on new connection requests.
-* */Makefile install rule doesn't install all the binaries/man pages
-* Make ipnat use "tcp/udp" instead of "tcpudp"
-* Print out "tcp/udp" properly
-* ipnat "portmap tcp" matches "portmap udp" when adding/removing
-* NAT dest. ip# increased by one on mask of 0xffffffff when it shouldn't
-
-3.1.1-beta	1/9/96 - Released
-
-add better detection of TCP connections closing to TCP state monitoring.
-
-fr_addstate() not called correctly for fragments.  "keep state" and
-"keep frag" code don't work together 100% - Songqing Cai
-(songqing_cai@sterling.com)
-
-call to fr_addstate() incorrect for adding state in combination with keeping
-fragment information - Songqing Cai (songqing_cai@sterling.com)
-
-KFREE() passed fp (incorrect) and not fr (correct) in ip_frag.c - John Hood
-(cgull@smoke.marlboro.vt.us)
-
-make ipf parser recognise '\\' as a `continued line' marker - Dima Ruban
-(dima@best.net)
-
-3.1.1-alpha	23/8/96 - Released
-
-kernel panic's when ICMP packets go through NAT code
-
-stats aren't zero'd properly with ipf -Z
-
-ipnat doesn't show port numbers correctly all the time and also add the
-protocol (tcp/udp/tcpudp) to rdr output - Carson Gaspar (carson@lehman.com)
-
-fast checksum fixing not 100% - backout patch - Bill Dorsey (dorsey@lila.com)
-
-NetBSD-1.2 patches from - VaX#n8 <vax@linkdead.paranoia.com>
-
-Usage() call error in fils.c - Ajay Shekhawat (ajay@cedar.buffalo.edu)
-
-ip_optcopy() staticly defined in ip_output.c in SunOS4 - Nick Hall
-(nrh@tardis.ed.ac.uk)
-
-3.1.0		7/7/96 - Released
-
-Reformatted ipnat output to be compatible with it's input, so that
-"ipnat -l | ipnat -rf -" is possible.
-
-3.1.0beta	30/6/96 - Released
-
-NetBSD-1.2 patches from Greg Woods (woods@most.weird.com)
-
-kernel module must not be installed stripped (Solaris2), as created by
-"make package" for Solaris2 - Peter Heimann
-(peter@i3.informatik.rwth-aachen.de)
-
-3.1.0alpha	5/6/96 - Released
-
-include examples in package for solaris2
-
-patches for removing an extra ip header checksum (FreeBSD/NetBSD/SunOS)
-
-removed trailing space from printouts of rules in ipf.
-
-ipresend supports the same range of inputs that ipftest does.
-
-sending a duplicate copy of a packet to another network devices is now
-supported. ("dup-to")
-
-sending a packet to an arbitary interface is now supported, irrespective
-of its actual route, with no ttl decrement.  Can also be routed without
-the ttl being decremented. ("to" and "fastroute").
-
-"call" option added to support calling a generic function if a packet is
-matched.
-
-show all (upto 4) recorded bytes from the interface name in logging from
-ipmon.
-
-support for using unix file permissions for read/write access on the device
-is now in place.
-
-recursive mutex in nat_new() for Solaris 2.x - Per L. Hagen <per@stibo.dk>
-
-ipftest doesn't call initparse() for THISHOST - Catherine Allen
-(cla@connect.com.au)
-
-Man page corrections from Rex Bona (rex@pengo.comsmiths.com.au)
-
-3.0.4		10/4/96 - Released
-
-looop in `parsing' IP packets with optlen 0 for ip options.
-
-rule number not initialized and resulted in unexpected results for state
-maching.
-
-option parsing and printing bugs - Pradeep Krishnan
-
-3.0.4beta	25/3/96	- Released
-
-wouldn't parse "keep flags keep state" correctly.
-
-SunOS4.1.x ip_input.c doesn't recognise all 1s broadcast address - Nigel Verdon
-
-patches for BSDI's BSD/OS 2.1 and libpcap reader on little endian systems
-from Thorsten Lockert <tholo@tetherless.com>
-
-b* functions in fil.c on Solaris 2.4
-
-3.0.3	17/3/96 - Released
-
-added patches to support IP Filter initialisation when compiled into the
-kernel.
-
-added -x option to ipmon to display hex dumps of logged packets.
-
-added -H option to ipftest to allow ascii-hex formatted input to specify
-arbitary IP packets.
-
-Sending TCP RSTs as a response now work for Solaris2 x86
-
-add patches to make IP Filter compile into NetBSD kernels properly.
-
-patch to stop SunOS 4.1.x kernels panicing with "data traps".
-
-ipfboot script unloads and reloads ipf module on Solaris2 if it is already
-loaded into the kernel.
-
-Installation of IP Filter as a Solaris2 package is now supported.
-
-Man pages for ipnat.4, ipnat.5 added.
-
-added some more regression tests and fixed up IP Filter to pass the new tests
-(previous versions failed some of the tests in set 12).
-
-IP option filter processing has changed so that saying "with opt lsrr" will
-check only for that one, but not mask out other options, so a packet with
-strict source routing, along with loose source routing will match all of
-"with opt lsrr", "with opt ssrr" and "with opt lsrr,ssrr".
-
-IPL_NAME needed in ipnat.c - Kelly (kelly@count04.mry.scruznet.com)
-
-patches for clean NetBSD compilation from Bernd Ernesti (bernd@arresum.inka.de)
-
-make install is incorrect - Julian Briggs (julian@lightwork.co.uk)
-
-strtol() returns 0x7fffffff for all negative numbers,
-printfr() generates incorrect output for "opt sec-class *",
-handling of "not opt xxx opt yyy" incorrect.
-- Minh Tonthat (minht@sbei.com)/Pradeep Krishnan (pradeepk@sbei.com)
-
-m_pullup() called only for input and not output; caused problems
-with filtering icmp - Nigel Verdon (verdenn@gb.swissbank.com)
-
-parsing problem for "port 1" and NetBSD patches incorrect -
-Andreas Gustafsson (gson@guava.araneus.fi)
-
-3.0.2	4/2/96 - Released
-
-Corrected bug where NAT recalculates checksums for fragments.
-
-make NAT recalculate UDP checksums (rather than setting them to 0),
-if they're non-zero.
-
-DNS patches - Real Page (Real.Page@Matrox.com)
-
-alteration of checksum recalculations in NAT code and addition of
-redirection with NAT - Mike Neuman
-
-core dump, if tcp/udp is used with a port number and not service name,
-in ipf - Mike Neuman (mcn@engarde.com)
-
-initparse() call, missing to prime "<thishost>" hook - Craig Bishop
-
-3.0.1	14/1/96 - Released
-
-miscellaneous patches for Solaris2
-
-3.0	14/1/96	- Released
-
-Patch included for FDDI, from Richard Ohnemus
-(Richard_Ohnemus@dallas.csd.sterling.com)
-
-Code cleanup for release.
-
-3.0beta4 10/1/96
-
-recursive mutex in ipfr_slowtimer fixed, reported by Craig Bishop
-
-recursive mutex in sending TCP RSTs fixed, reported by Tony Becker
-
-3.0beta3 9/1/96
-
-FIxup for Solaris2.5 install and interface name bug in ipftest from
-Julian Briggs (julian@lightwork.co.uk)
-
-Byte order patches for ipmon from Tony Becker (tony@mcrsys.com)
-
-3.0beta2 7/1/96
-
-Added the (somewhat warped) IP accounting as it exists in ipfw on FreeBSD.
-Note, this isn't really what one would call IP account, when compared to
-process accounting, sigh.
-
-Split up ipresend into iptest/ipresend/ipsend
-
-Added another m_pullup() inside fr_check() for BSD style kernels and
-added some checks to ipllog() to not log more than is present (for short
-packets).
-
-Fixed bug where failed hostname/netname resolution goes undetecte and
-becomes 0.0.0.0 (any) (reported Guido van Rooij)
-
-3.0beta	11/11/95	- Released
-
-Rewrote the way rule testing is done, reducing the number of files needed and
-generated.
-
-SIOCIPFFL was incorrectly affected by IPFILTER_LOG (Mathew Green)
-
-Patches from Guido van Rooij to fix sending back TCP RSTs on Net-2/Net-3
-BSD based Unixes (panic'd)
-
-Patches for FreeBSD/i86 ipmon from Riku Kalinen <riku@tequila.nixu.fi>
-(I think someone else already told me about these but they got lost :-/)
-
-Changed Makefile structure to build object files for different operating
-systems in separate directories by default.
-
-BSDI has ef0 for first ethernet interface
-
-Allow for a "not" operator before optional keywords.
-
-The "rule number" was being incorrectly incremented every time it went through
-the loop rather than when it matched a rule.
-
-2.8.2	24/10/95	- Released
-
-Fixed up problems with "textip" for doing lots of testing.
-
-Fixed bug in detection of "short" tcp/ip packets (all reported as being short).
-
-Solaris 2.4 port now works 100%.
-
-Man page errors reported and fixed.
-
-Removed duplicate entry in etc/services for login on port 49 (Craig Bishop).
-
-Fixed ipmon output to put a space after the log-letter.
-
-Patch from Guido van Rooij to fix parsing problem.
-
-2.8.1	15/10/95	- Released
-
-Added ttl and tos filtering.
-
-Patches for fixing up compilation and port problems (little endian)
-from Guido van Rooij <guido@IAEhv.nl>.
-
-Man page problems reported and fixed by Carson Gaspar <carson@lehman.com>.
-
-ipsend doesn't compile properly on Solaris2.4
-
-Lots of work done for Solaris2.4 to make it MT/MP safe and work.
-
-2.8	15/9/95		- Released
-
-ipmon can now send messages to syslogd (-s) and use names instead of
-numbers (-N).
-
-IP packets are now "compiled" into a structure only containing filterable
-bits.
-
-Added regression testing in the test/ subdirectory, using a new option
-(-b) with the ipftest program.
-
-Added "nomatch" return to filter results.  These are counted and show
-up in reports from ipfstat.
-
-Moved filter code out of ip_fil.c and into fil.c - there is now only one
-instance of it in the package.
-
-Added Solaris 2.4 support.
-
-Added IPSO basic security option filtering.
-
-Added name support for filtering on all 19 named IP options.
-
-Patches from Ivan Brawley to log packet contents as well as packet headers.
-
-Update for sun/conf.c.diff from Ivan Brawley <ibrawley@awadi.com.AU>
-
-Added patches for FreeBSD 1, and added two new switches (-E, -D) to ipf,
-along with a new ioctl, SIOCFRENB.
-From: Dieter Dworkin Muller <dworkin@village.org>
-
-2.7.3	31/7.95		- Released
-
-Didn't compile cleanly without IPFILTER_LOG defined (Mathew Green).
-
-ipftest now deals with tcpdump3 binary output files (from libpcap) with -P.
-
-Brought ipftest program upto date with actual filter code.
-
-Filter would cause a match to occur when it wasn't meant to if the packet
-had short headers and was missing portions that should have been there.
-Err, it would rightly not match on them, but their absence caused a match
-when it shouldn't have been.
-
-2.7.2	26/7/95		- Released
-
-Problem with filtering just SYN flagged packets reported by
-Dieter Dworkin Muller <dworkin@village.org>.  To solve this
-problem, added support for masking TCP flags for comparison "flags X/Y".
-
-2.7.1	9/7/95		- Released
-
-Added ip_dirbroadcast support for Sun ip_input.c
-
-Fixed up the install scripts for FreeBSD/NetBSD to recognise where they are
-better.
-
-2.7	7/7/95		- Released
-
-Added "return-rst" to return TCP RST's to TCP packets.
-
-Actually ported it to FreeBSD-i386 2.0.0, so it works there properly now.
-
-Added insertion of filter rules.  Use "@<#>" at the beginning of a filter
-to insert a rule at row #.
-
-Filter keeps track of how many times each rule is matched.
-
-Changed compile time things to match kernel option (IPFILTER_LKM &
-IPFILTER_LOG).
-
-Updated ip_input.c and ip_output.c with paches for 3.5 Multicast IP.
-(No change required for 3.6)
-
-Now includes TCP fragments which start inside the TCP header as being short.
-Added counting the number of times each rule is matched.
-
-
-2.6	11/5/95		- Released
-
-Added -n option to ipf: when supplied, no changes are made to the kernel.
-
-Added installation scripts for SunOS 4.1.x and NetBSD/FreeBSD/BSDI.
-
-Rewrote filtering to use a more generic mask & match procedure for
-checking if a packet matches a rule.
-
-2.5.2	27/4/95		- Released
-
-"tcp/udp" and a non-initialised pointer caused the "proto" to become
-a `random' value; added "ip#/dotted.mask" notation to the BNF.
-From Adam W. Feigin  <feigin@iis.ee.ethz.ch>
-
-2.5.1	22/3/95		- Released
-
-"tcp/udp" had a strange effect (undesired) on getserv*() functions,
-causing protocol/service lookups to fail.  Reported by Matthew Green.
-
-2.5	17/3/95		- Released
-
-Added a new keyword "all" to BNF and parsing of tcpdump/etherfind/snoop
-output through the ipftest program.  Suggestions from:
-Michael Ciavarella (mikec@phyto.apana.org.au)
-
-Conflicts occur when "general" filter rules are used for ports and the
-lack of a "proto" when used with "port" matches other packets when only
-TCP/UDP are implied.
-Reported Matthew Green (mrg@fulcom.com.au);
-reported & fixed 6-8/3/95
-
-Added filtering of short TCP packets using "with short" 28/2/95
-(These can possibly slip by checks for the various flags).  Short UDP
-or ICMP are dropped to the floor and logged.
-
-Added filtering of fragmented packets using "with frag" 24/2/95
-
-Port to NetBSD-current completed 20/2/95, using LKM.
-
-Added logging of the rule # which caused the logging to happen and the
-interface on which the packet is currently as suggested by
-Andreas Greulich (greulich@math-stat.unibe.ch) 10/2/95
-
-2.4	9/2/95		- Released
-Fixed saving of IP headers in ICMP packets.
-
-2.3	29/1/95
-Added ipf -F [in|out|all] to flush filter rule sets (SIOCIPFFL).
-Fixed iplread() and iplsave() with help from Marc Huber.
-
-2.2	7/1/95		- Released
-Added code from Marc Huber <huber@fzi.de> to allow it to allocate
-its own major char number dynamically when modload'ing.  Fixed up
-use of <, >, <=, >= and >< for ports.
-
-2.1	21/12/94	- Released
-repackaged to include the correct ip_output.c and ip_input.c *goof*
-
-2.0	18/12/94	- Released
-added code to check for port ranges - complete.
-rewrote to work as a loadable kernel module - complete.
-
-1.1
-added code for ouput filtering as well as input filtering and added support for logging to a simple character device of packet headers.
-
-1.0	22/04/93	- Released
-First release cut.