RE: arp problem

From: dlaumann@suntzu.net
Date: 04/24/02


From: dlaumann@suntzu.net
To: bugtraq@securityfocus.com
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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