ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");
ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate INVALID -j DROP");
ruleset_addrule($ruleset, $chain, "-m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT");
ruleset_addrule($ruleset, $chain, "-i lo -j ACCEPT");