Firewall-HOWTO. Where is it?

I am not finding the Firewall-HOWTO refered to in the 9.1 Admin Manual. Can someone tell me where it is. The first attempt to set up a Firewall worked but I can not Telnet or FTP into the machine from other machines in the LAN. Is there other documentation on this? All comments welcome. john ------------------------------------ John N. Alegre o Andante Systems o eCommerce Consulting o Custom Web Development <*{{{{}>< ------------------------------------