I just got my very own linode, and I'm happily running Ubuntu 5.10 with the latest 2.6 kernel. However, when I try and use iptables, I get the following error:

~> iptables --list -n
iptables v1.3.1: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

I get this error whenever I try and use any iptable command. Am I forgetting to do something totally obvious?

Try

mv /lib/tls /lib/tls-disabled

UML doesn't support NPTL (and, as consequence of this, TLS), which sometimes causes weirdness like you are experiencing.

_________________
/ Peter

Are you sure the IPTables process is running?

Huh? Iptables isn't a process - it's either compiled into the kernel or is loaded as kernel modules.

You're right, I shouldn't post before my first cup of coffee.

Understood - you're forgiven