Ran into that one awhile back, this article should help ya... http://support.microsoft.com/default.aspx?scid=kb;en-us;812076 -----Original Message----- From: Tran Duy Loc [mailto:Tduyloc@xxxxxxxxx] Sent: Wednesday, April 20, 2005 08:21 To: [ISAserver.org Discussion List] Subject: [isalist] Open ISA TCP Port http://www.ISAserver.org I am using VPN client named "Cisco Systems VPN client", I open new port TCP 8888 in ISA Server to connect to company's VPN server "Cisco VPN 3000" in Japan but it does not work through firewall, anyone can help me for this problem ? When I used same VPN client to connect VPN server in japan by "DSL" without ISA firewall server. Everything is ok. I am new in ISA server, anyone can help me... Thank you. Ps : 1. My ISA server is located in Vietnam 2. I am using ISA Server 2000. Thanks