how to enable iptables tarpit?

I'm using ubuntu server 10.04 and I have to enable tarpit module . I installed the followning packet :

aptitude install xtables-addons-common xtables-addons-source
module-assistant auto-install xtables-addons-source

but when i try to add a tarpit rule I get this error:

iptables: No chain/target/match by that name.

Thanks for your help .

1 Answer

Clean all rules:

iptables -F
iptables -X

Use these default parameters:

iptables -P INPUT DROP
iptables -P OUTPUT DROP
iptables -P FORWARD ACCEPT

Then do the following:

 iptables-save > /etc/network/iptables iptables-restore < /etc/network/iptables

Then enter:

iptables -A INPUT -p tcp -m tcp -dport 80 -j TARPIT

Or you can set a trap for ALL ports, except for your own:

 iptables -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT iptables -A INPUT -p tcp -m tcp --dport 25 -j ACCEPT iptables -A INPUT -p tcp -m tcp -j TARPIT