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I have an Ubuntu 11.04. I wanted to play around with iptables rules. But I don't see it installed. When I did:

sudo iptables -t nat -F chain

This is what it returned:

iptables v1.4.10: can't initialize iptables table `-nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

So is nat table not available?

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Yes, it's available. I think that you've ran the command with a dash in fron of the table name.

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Ooops!! u are right! Guess I can delete this post now :) – user489152 May 11 '12 at 9:28

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