さくらVPS/iptables_manについて、ここに記述してください。

SEE ALSO 

iptables-apply(8),   iptables-save(8),   iptables-restore(8),    iptables-extensions(8),

       The packet-filtering-HOWTO details iptables usage for packet filtering, the NAT-
       HOWTO details NAT, the netfilter-extensions-HOWTO details  the  extensions  that
       are  not  in  the standard distribution, and the netfilter-hacking-HOWTO details
       the netfilter internals.
       See http://www.netfilter.org/.