Reviewed by: msmith, alex

Cosmetic changes to the loading of firewall rules and lkm.

1 files changed, 60 insertions, 44 deletions

diff --git a/etc/rc.firewall b/etc/rc.firewall
index b0e29ba..5bfaedc 100644
--- a/etc/rc.firewall
+++ b/etc/rc.firewall
@@ -1,17 +1,18 @@
 ############
 # Setup system for firewall service.
-# $Id: rc.firewall,v 1.11 1997/05/03 11:22:17 jkh Exp $
+# $Id: rc.firewall,v 1.12 1997/05/05 07:08:31 jkh Exp $
 
 ############
+# Define the firewall type in /etc/rc.conf.  Valid values are:
+#   open     - will allow anyone in
+#   client   - will try to protect just this machine
+#   simple   - will try to protect a whole network
+#   closed   - totally disables IP services except via lo0 interface
+#   UNKNOWN  - disables the loading of firewall rules.
+#   filename - will load the rules in the given filename (full path required)
 #
-# >>Warning<<
-# This file is not very old yet, and have been put together without much
-# testing of the contents.
-
-# Set this to be the type of firewall you want:  open, client, simple or NONE.
-# ``open'' will allow anyone in, ``client'' will try to protect just one
-# machine and ``simple'' will try to protect a whole network (entries should
-# be customized appropriately below).  To let no one in, use NONE.
+# For ``client'' and ``simple'' the entries below should be customized 
+# appropriately.
 
 ############
 #
@@ -36,9 +37,21 @@
 #	http://www.awl.com/
 #
 
+if [ "x$1" != "x" ]; then
+	firewall_type=$1
+fi
+
+############
+# Set quiet mode if requested
+if [ "x$firewall_quiet" = "xYES" ]; then
+	fwcmd="/sbin/ipfw -q"
+else
+	fwcmd="/sbin/ipfw"
+fi
+
 ############
 # Flush out the list before we begin.
-/sbin/ipfw -f flush
+$fwcmd -f flush
 
 ############
 # If you just configured ipfw in the kernel as a tool to solve network
@@ -46,19 +59,23 @@
 # they you will want to change the default policy to open.  You can also
 # do this as your only action by setting the firewall_type to ``open''.
 
-# /sbin/ipfw add 65000 pass all from any to any
+# $fwcmd add 65000 pass all from any to any
 
 ############
 # Only in rare cases do you want to change this rule
-/sbin/ipfw add 1000 pass all from 127.0.0.1 to 127.0.0.1
+$fwcmd add 1000 pass all from 127.0.0.1 to 127.0.0.1
 
 
 # Prototype setups.
-if [ "${firewall}" = "open" ]; then
+if [ "${firewall_type}" = "open" ]; then
+
+	$fwcmd add 65000 pass all from any to any
 
-	/sbin/ipfw add 65000 pass all from any to any
+elif [ "${firewall_type}" = "simple" ]; then
 
-elif [ "${firewall}" = "client" ]; then
+	$fwcmd add 65000 pass all from any to any via lo0
+
+elif [ "${firewall_type}" = "client" ]; then
 
     ############
     # This is a prototype setup that will protect your system somewhat against
@@ -71,32 +88,32 @@ elif [ "${firewall}" = "client" ]; then
     ip="192.168.4.17"
 
     # Allow any traffic to or from my own net.
-    /sbin/ipfw add pass all from ${ip} to ${net}:${mask}
-    /sbin/ipfw add pass all from ${net}:${mask} to ${ip}
+    $fwcmd add pass all from ${ip} to ${net}:${mask}
+    $fwcmd add pass all from ${net}:${mask} to ${ip}
 
     # Allow TCP through if setup succeeded
-    /sbin/ipfw add pass tcp from any to any established
+    $fwcmd add pass tcp from any to any established
 
     # Allow setup of incoming email 
-    /sbin/ipfw add pass tcp from any to ${ip} 25 setup
+    $fwcmd add pass tcp from any to ${ip} 25 setup
 
     # Allow setup of outgoing TCP connections only
-    /sbin/ipfw add pass tcp from ${ip} to any setup
+    $fwcmd add pass tcp from ${ip} to any setup
 
     # Disallow setup of all other TCP connections
-    /sbin/ipfw add deny tcp from any to any setup
+    $fwcmd add deny tcp from any to any setup
 
     # Allow DNS queries out in the world
-    /sbin/ipfw add pass udp from any 53 to ${ip}
-    /sbin/ipfw add pass udp from ${ip} to any 53
+    $fwcmd add pass udp from any 53 to ${ip}
+    $fwcmd add pass udp from ${ip} to any 53
 
     # Allow NTP queries out in the world
-    /sbin/ipfw add pass udp from any 123 to ${ip}
-    /sbin/ipfw add pass udp from ${ip} to any 123
+    $fwcmd add pass udp from any 123 to ${ip}
+    $fwcmd add pass udp from ${ip} to any 123
 
     # Everything else is denied as default.
 
-elif [ "${firewall}" = "simple" ]; then
+elif [ "${firewall_type}" = "simple" ]; then
 
     ############
     # This is a prototype setup for a simple firewall.  Configure this machine 
@@ -117,43 +134,42 @@ elif [ "${firewall}" = "simple" ]; then
     iip="192.168.3.17"
 
     # Stop spoofing
-    /sbin/ipfw add deny all from ${inet}:${imask} to any in via ${oif}
-    /sbin/ipfw add deny all from ${onet}:${omask} to any in via ${iif}
+    $fwcmd add deny all from ${inet}:${imask} to any in via ${oif}
+    $fwcmd add deny all from ${onet}:${omask} to any in via ${iif}
 
     # Stop RFC1918 nets on the outside interface
-    /sbin/ipfw add deny all from 192.168.0.0:255.255.0.0 to any via ${oif}
-    /sbin/ipfw add deny all from 172.16.0.0:255.240.0.0 to any via ${oif}
-    /sbin/ipfw add deny all from 10.0.0.0:255.0.0.0 to any via ${oif}
+    $fwcmd add deny all from 192.168.0.0:255.255.0.0 to any via ${oif}
+    $fwcmd add deny all from 172.16.0.0:255.240.0.0 to any via ${oif}
+    $fwcmd add deny all from 10.0.0.0:255.0.0.0 to any via ${oif}
 
     # Allow TCP through if setup succeeded
-    /sbin/ipfw add pass tcp from any to any established
+    $fwcmd add pass tcp from any to any established
 
     # Allow setup of incoming email 
-    /sbin/ipfw add pass tcp from any to ${oip} 25 setup
+    $fwcmd add pass tcp from any to ${oip} 25 setup
 
     # Allow access to our DNS
-    /sbin/ipfw add pass tcp from any to ${oip} 53 setup
+    $fwcmd add pass tcp from any to ${oip} 53 setup
 
     # Allow access to our WWW
-    /sbin/ipfw add pass tcp from any to ${oip} 80 setup
+    $fwcmd add pass tcp from any to ${oip} 80 setup
 
     # Reject&Log all setup of incoming connections from the outside
-    /sbin/ipfw add deny log tcp from any to any in via ${oif} setup
+    $fwcmd add deny log tcp from any to any in via ${oif} setup
 
     # Allow setup of any other TCP connection
-    /sbin/ipfw add pass tcp from any to any setup
+    $fwcmd add pass tcp from any to any setup
 
     # Allow DNS queries out in the world
-    /sbin/ipfw add pass udp from any 53 to ${oip}
-    /sbin/ipfw add pass udp from ${oip} to any 53
+    $fwcmd add pass udp from any 53 to ${oip}
+    $fwcmd add pass udp from ${oip} to any 53
 
     # Allow NTP queries out in the world
-    /sbin/ipfw add pass udp from any 123 to ${oip}
-    /sbin/ipfw add pass udp from ${oip} to any 123
+    $fwcmd add pass udp from any 123 to ${oip}
+    $fwcmd add pass udp from ${oip} to any 123
 
     # Everything else is denied as default.
 
-elif [ "${firewall}" != "NONE" -a -r "${firewall}" ]; then
-
-	/sbin/ipfw ${firewall}
+elif [ "${firewall_type}" != "NONE" -a -r "${firewall_type}" ]; then
+	$fwcmd ${firewall}
 fi