comp.os.linux.networking

On Fri, 11 Apr 2008, in the Usenet newsgroup comp.os.linux.networking, in
article ,
R C V wrote:

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> I had a working system with iptable rules which were working fine
>till the time I hit on these updates button which was prompting me to
>load some 277 new updates. I am running Fedora Core 6.

That's getting a bit on the old side - I'm told that FC 9 will be out
in the next few weeks. "277 new updates" - that's a lot. Did you
look to see what they were?

>Is it possible that these updates would have reset some setting due
>to which iptables has become non functional...

Anything is possible - but it's awfully hard to see your system from
here, so we can't tell what you have configured, how, and so on.

>I ran wireshark on the remote systems and I saw that my NAT rules are
>being completely bypassed, whereas those very rules were working
>before I applied those updates.

I'd start by looking at the boot scripts to see HOW the firewall is
being started. I'd also look at the network configuration - which
interface is which, and so on. What run-level? How did you set up
the firewall? Then look in /var/log/messages to see what messages
are there from your last re-boot. If you are running a text based
login (runlevel 3), BEFORE YOU LOG IN after a re-boot, hit the shift
and page-up keys to scroll back through the boot error messages.

Old guy