On Fri, Nov 07 '03 at 11:49, Fritz Mesedilla wrote: > From their windows workstation, I want to be able to let them perform a nslookup. > > I tried this and nothing happened. > $IPTABLES -A INPUT -p tcp --sport 53 -j ACCEPT > even a > $IPTABLES -A INPUT -p tcp --dport 53 -j ACCEPT nslookup/dns needs udp, too. And you must use the FORWARD chain if you don't run the dns server on the firewall. What about having a look at the rules produced by some of the firewall generation scripts. e.g. fireHOL. (-> firehol.sf.net) -- /"\ Goetz Bock at blacknet dot de -- secure mobile Linux everNETting \ / (c) 2003 as GNU FDL 1.1 X [ 1. Use descriptive subjects - 2. Edit a reply for brevity - ] / \ [ 3. Reply to the list - 4. Read the archive *before* you post ]