Of course you can. But it isn't a bridge, it's a firewall. Transparent layer three routing is fraught with security issues you don't really want your firewall to get involved with. So, use IP addresses on your ISA firewall and it will work great. Tom www.isaserver.org/shinder Get the book! Tom and Deb Shinder's Configuring ISA Server 2004 http://tinyurl.com/3xqb7 MVP -- ISA Firewalls -----Original Message----- From: Rija Tsioritiana [mailto:tstiana@xxxxxxxxxx] Sent: Thursday, September 30, 2004 3:19 AM To: [ISAserver.org Discussion List] Subject: [isalist] using ISA server 2004 as bridge filtring + routing http://www.ISAserver.org Hi, I want to know if with isa server 2004; we can use it as firewall only ! , not using NAT !for example: on ISP: (internet)----> Router---->(public adr) ISA SERVER 2004 (public adr)----> Client! ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: tshinder@xxxxxxxxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=isalist Report abuse to listadmin@xxxxxxxxxxxxx