Hi all I have a Internet based leased line to Connected to my router and my two branch offices also connected to the same router and my router has only one ethernet adatper so my branch office requests and internet traffice comes from the same ethernet .. currently i m using winproxy to serve http access to my corporate office and as well as my 2 branch office s, it is working fine. now i want to impliment ISA 2000. i removed winproxy. on the same machine the movement i install isa server It is disabling all in bound access. i am able to configure my corporate users to access internet. but comming to brach office they are not able to ping to isa server.. please let me know how to impliment ISA in Complex networks please help me out My ISP Ip 202.202.202.X My Corporate 192.168.1.x/24 Branch1 192.168.2.x/24 Branch2 192.168.3.x/24 Thanks __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com