Bugtraq mailing list archives

RE: arp problem


From: dlaumann () suntzu net
Date: Tue, 23 Apr 2002 20:33:24 -0500

2.4 kernels require a patch...
http://www.linuxvirtualserver.org/~julian/#hidden

This comes up every year or so on some list or another.

Linux will send traffic for any of it's addresses through any 
interface.
This is allowed in rfc 1122 section 3.3.4.2. You can change 
this behavior
by doing this

echo 1 > /proc/sys/net/ipv4/conf/all/hidden
echo 1 > /proc/sys/net/ipv4/conf/eth0/hidden
echo 1 > /proc/sys/net/ipv4/conf/eth1/hidden

We have linux box running kernel 2.4 with 2 NICs.


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