hi friends, i configured ISA server 2000 on my network for firewalling and web caching. i can access the internet but cannot use the msn messenger. i have checked all the isa server configurations and nothing appears to be wrong. the msn works well without the isa server. what could be wrong. essiet.a.o Dck Nigeria Limited, 33 Akerele ,street surulere lagos Nigeria. __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com