[lug] Firewall spontaneously combusted???
David Morris
lists at morris-clan.net
Sat Sep 11 11:22:19 MDT 2004
On Fri, Sep 10, 2004 at 05:54:40PM -0600, Kevin Fenzi wrote:
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> David> cat 1 > /proc/sys/net/ipv4/ip_forward iptables --table nat
> David> --append POSTROUTING \ --out-interface eth1 --jump SNAT \ --to
> David> <external_ip>
>
> David> I can run these commands on other systems and I get IP
> David> Masquerading as expected. Just before I moved I could run it
> David> on the Sparc LX with as well and it worked there.
>
> Odd. I don't think that would work anywhere.
>
> cat 1 > /proc/sys/net/ipv4/ip_forward
>
> will cat the contents of a file called '1' into that proc file.
>
> Perhaps you meant to do:
>
> echo 1 > /proc/sys/net/ipv4/ip_forward ?
Oops, I just typed the wrong command line in the email.
Wasn't paying attention to what I was typing and was trying
to get out the door.
> Try the echo and make sure it's setting ip_forward...
>
> Otherwise it might be hitting another rule before the one you are
> appending to? Perhaps a deny all before that?
No other rules exist, and ip_forward is set to "1".
--David
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