Hie....,thanks for the reply but i think it doesnt concern ports you have mentined,maybe i shld explain i config Isa server in my pc,and am running NT server in so what is happenning other pc's which are getting connection from this server are ok but this server does't allow me to sign in msn chat and hotmail but othersites are fine. __________________________________________________ Do You Yahoo!? Yahoo! Shopping - Mother's Day is May 12th! http://shopping.yahoo.com