Hi Achmad, Configure the pix to foward all inbound packets to the firewall and it will handle them appropriately. If you want to get more adventurous, configure packet filtering so that only the ports the firewall is listening on have packets forwarded to them. HTH, Tom Thomas W Shinder www.isaserver.org/shinder <http://www.isaserver.org/shinder> ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp <http://tinyurl.com/1llp> -----Original Message----- From: Achmad Mursalin [mailto:ach_m@xxxxxxxxx] Sent: Tuesday, September 02, 2003 11:05 PM To: [ISAserver.org Discussion List] Subject: [isalist] cisco PIX Firewall 506E http://www.ISAserver.org how to configure between ISA server to Cisco PIX Firewall 506e to Internet. MY office have Networking : exchange - ISA server - Internet. Next time : exchange - ISA server - PIX Firewall - Internet. thanks.