There is an option in your befsr41 to "Block WAN Request" check it and you will be stealth except maybe for port 113 (ident) wich is needed sometimes to send/receive email. Don't forward all your ports to a bogus ip because it will mess your router up!!! If you want port 113 stealth your can forward this however to a non existent ip within your network but not all ports!!! To get specific information about your linksys router there is a forum especially for linksys here: http://www.dslreports.com/forum/equip,16