Thanks for the replies to my last message. Some of the replies have started me thinking that I have put my rule set in the wrong place. I made a dir. called /etc/rc.d and placed rc.firewall in there. Basically I was following the example in 'Linux Firewalls'. Is that wrong or Red Hat specific? If so, is there a more correct location? Should I put it in /etc/init.d/<filename> and put a link in /etc/rcN.d? This brings me to the next question...
[I don't mean to go over ground you have already covered Mark, but your reply went to debian-user :-) ] Also, what run-level should my firewall run at and how do I control the run level? I am gradually getting the hang of this stuff but run levels are a bit of a mystery at the moment! Thanks Mike

