On Fri, Oct 22, 2004 at 04:22:33PM -0800, W.D.McKinney wrote: > Do you know of any examples ? Actually, it's the list for ISPs, so people here are supposed to have a bit of basic knowledge about networking. But anyways, it could be something like: iptables -A INPUT -p tcp -s IP.YOU.WANT.TO.BLOCK --dport 25 -j REJECT Wanted