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| author | peter <peter@FreeBSD.org> | 1996-02-22 21:32:23 +0000 |
|---|---|---|
| committer | peter <peter@FreeBSD.org> | 1996-02-22 21:32:23 +0000 |
| commit | fe35eac01c2144b50535ae23a00660c11524fd22 (patch) | |
| tree | 00ca04534534b22254d22056ecd77387d0c0ec90 /sys/netinet/in_pcb.h | |
| parent | f7cfae926eb054cccf8e9a58065b4e8a2874d530 (diff) | |
| download | FreeBSD-src-fe35eac01c2144b50535ae23a00660c11524fd22.zip FreeBSD-src-fe35eac01c2144b50535ae23a00660c11524fd22.tar.gz | |
Make the default behavior of local port assignment match traditional
systems (my last change did not mix well with some firewall
configurations). As much as I dislike firewalls, this is one thing I
I was not prepared to break by default.. :-)
Allow the user to nominate one of three ranges of port numbers as
candidates for selecting a local address to replace a zero port number.
The ranges are selected via a setsockopt(s, IPPROTO_IP, IP_PORTRANGE, &arg)
call. The three ranges are: default, high (to bypass firewalls) and
low (to get a port below 1024).
The default and high port ranges are sysctl settable under sysctl
net.inet.ip.portrange.*
This code also fixes a potential deadlock if the system accidently ran out
of local port addresses. It'd drop into an infinite while loop.
The secure port selection (for root) should reduce overheads and increase
reliability of rlogin/rlogind/rsh/rshd if they are modified to take
advantage of it.
Partly suggested by: pst
Reviewed by: wollman
Diffstat (limited to 'sys/netinet/in_pcb.h')
| -rw-r--r-- | sys/netinet/in_pcb.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/netinet/in_pcb.h b/sys/netinet/in_pcb.h index f6db7bc..bc56f9a 100644 --- a/sys/netinet/in_pcb.h +++ b/sys/netinet/in_pcb.h @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93 - * $Id: in_pcb.h,v 1.9 1995/11/14 20:34:03 phk Exp $ + * $Id: in_pcb.h,v 1.10 1995/12/05 21:26:34 bde Exp $ */ #ifndef _NETINET_IN_PCB_H_ @@ -78,6 +78,8 @@ struct inpcbinfo { #define INP_RECVDSTADDR 0x04 /* receive IP dst address */ #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR) #define INP_HDRINCL 0x08 /* user supplies entire IP header */ +#define INP_HIGHPORT 0x10 /* user wants "high" port binding */ +#define INP_LOWPORT 0x20 /* user wants "low" port binding */ #define INPLOOKUP_WILDCARD 1 |
