I'm a little confused on all the terms here.... When running a messenger service such as AIM or Yahoo Messenger, I am unable to get out through the ISA server via the firewall client 5050 outbound TCP and 5050 in/outbound UDP for Yahoo, 5190 outbound TCP on AOL IM. I'm unsuccessful on sending messages via the firewall, but as soon as I enable SOCKS 4 on the application it works (port 1080). What is the difference here and is this just a error on configuration on my part for the firewall ports. Can this option work for either/or as well? Much appreciated, Paul Berg "<mail.sidley.com>" made the following annotations on 04/24/02 13:17:06 ------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------ This e-mail is sent by a law firm and may contain information that is privileged or confidential. If you are not the intended recipient, please delete the e-mail and any attachments and notify us immediately. ==============================================================================