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| author | mdodd <mdodd@FreeBSD.org> | 2003-04-01 08:21:44 +0000 |
|---|---|---|
| committer | mdodd <mdodd@FreeBSD.org> | 2003-04-01 08:21:44 +0000 |
| commit | e72fdee732ab55fc784034c81ccedda4b5279816 (patch) | |
| tree | f90a5d7ffe2a0b6602c7942defa8707719f90a9c /usr.bin/netstat/inet.c | |
| parent | 0bafba46a2e8ee2d4fd220f149d08306f11d0f4d (diff) | |
| download | FreeBSD-src-e72fdee732ab55fc784034c81ccedda4b5279816.zip FreeBSD-src-e72fdee732ab55fc784034c81ccedda4b5279816.tar.gz | |
Implement support for RFC 3514 (The Security Flag in the IPv4 Header).
(See: ftp://ftp.rfc-editor.org/in-notes/rfc3514.txt)
This fulfills the host requirements for userland support by
way of the setsockopt() IP_EVIL_INTENT message.
There are three sysctl tunables provided to govern system behavior.
net.inet.ip.rfc3514:
Enables support for rfc3514. As this is an
Informational RFC and support is not yet widespread
this option is disabled by default.
net.inet.ip.hear_no_evil
If set the host will discard all received evil packets.
net.inet.ip.speak_no_evil
If set the host will discard all transmitted evil packets.
The IP statistics counter 'ips_evil' (available via 'netstat') provides
information on the number of 'evil' packets recieved.
For reference, the '-E' option to 'ping' has been provided to demonstrate
and test the implementation.
Diffstat (limited to 'usr.bin/netstat/inet.c')
| -rw-r--r-- | usr.bin/netstat/inet.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/usr.bin/netstat/inet.c b/usr.bin/netstat/inet.c index d608e1a..3aa486e 100644 --- a/usr.bin/netstat/inet.c +++ b/usr.bin/netstat/inet.c @@ -568,6 +568,7 @@ ip_stats(u_long off __unused, const char *name, int af1 __unused) p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n"); p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n"); p(ips_badaddr, "\t%lu datagram%s with bad address in header\n"); + p(ips_evil, "\t%lu EVIL datagram%s received.\n"); #undef p #undef p1a } |
