Re: Problem with nat/OUTPUT/DNAT rule

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On Thu, Nov 11, 2004 at 11:34:09PM -0800, Gary W. Smith wrote:
> I have been trying to upgrade a RH9 firewall box running 1.2.7a to RHEL3.  I applied patch-o-matic pptp-conntrack to the RHEL3 kernel and everything "seemed" fine.  I have an automated script that generates some baseline firewall rules for some clients.  Anyways, It fails only on RHEL3 1.2.7a.  It works on my FC2 and RH9 boxes.
>  
> The failure always happens on the nat filter, output chain:
>  
> [0:0] -A OUTPUT -d 66.120.18.34 -j DNAT --to-destination 192.198.0.34
>  
> Any ideas?

you say you applied a patch from POM and recompiled your kernel.  did
you also rebuild iptables?  IIRC the pptp-conntrack patch changes the
size of the internal structures, so an unpatched iptables will fail to
add rules in this way (usually on a NAT rule).

-j

-- 
Jason Opperisano <opie@xxxxxxxxxxx>


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