water cooler :: Blocking ips/hosts

Those who know, please list here the most simple ways to block all traffic from a specific ip/host. Incoming traffic and outcomming traffic.

I don't know if this is the simplest, but the /etc/hosts.deny file is pretty basic
http://www.google.com/linux?h....=Search

Ok.
I can still access to a website I have blocked.
Now it seems I need to reload hosts.deny -file. How?

i think rcfirewall.dsl can do it. but i think it works in reverse, i.e it blocks everything, so you have to edit the script to let stuff through.

What I wanted was a simple way to block few advertising hosts so that browsing the net would be nicer.
Anyway I ran rc.firewall and configured it, but I can still see those banners/ads.

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