Re: iptables & tcp wrappers

hello.
you can see the numbers of the different rules with the command:

iptables -L --line-numbers

You can accept a certain ip use ssh and then another rules that drops
all others ips or u can change the policy of the INOMING chain and
accept the valid ip with the rule:

iptables -A INPUT -s X.X.X.X -p tcp --dport 22 -j ACCEPT

I think this kind of blocking ips is better than host allow and host deny.
This tutorial is exelent but is kind of long, u can search for
specific stuff u will need:
http://iptables-tutorial.frozentux.net/iptables-tutorial.html

Good luck!