Hi Mohammed, Since your ISP assigns these addresses, accept the one's they give you. Make sure your internal interface has your Internal DNS server listed and that the Internal interface is on the top of the Interface list. HTH, Tom Thomas W Shinder www.isaserver.org/shinder ISA 2004 Beta - Get it now! http://www.microsoft.com/isaserver/beta/default.asp ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: Mohammed Ehsan [mailto:ehsan@xxxxxxxxxxx] Sent: Sunday, May 09, 2004 5:13 AM To: [ISAserver.org Discussion List] Subject: [isalist] External Interface http://www.ISAserver.org Through interface settings article i came to know that on Extrenal interface you have to put fxied ip address,subnet mask and default gateway provided by ISP, but my internet is DSL and ISP assigned the ip address dynamically and my DSL router connected to switch with dynamic natting. What will be my setting on external interface for ip address, subnetmask,default gateway and DNS.So that ISA server work properly. Thanks. ------------------------------------------------------ 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: 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 send a blank email to $subst('Email.Unsub')