Iptables: port 22 open only for my IP

[Sasa Stupar]

Khan pravi:

> Hello,
> 
> I am total beginner to Linux and I'm trying to learn iptables basics. I 
> would like to learn how to close all ports but 80, 20, and that ports 22 
> and 10000 will be open only to my IP address.
> 
> How can I do that.
> 
> TNX!
> 
> 
Close all ports:
iptables -P INPUT DROP

Just create a chain named "myself":
iptables -N myself
iptables -A myself -m mac -s xxx.xxx.xxx.xxx --mac aa:bb:cc:dd:ee:ff -j 
ACCEPT

and then for each port, eg. port 80:
iptables -t filter -A INPUT -p tcp -s 0/0 -d $NET --dport 80 -j myself

--Sasa