>can we have chat through msn messenger better >Qusai > look: i don't know *if* you can have chat thru messenger better, using port 100... what i think is that, since you don't sound like an "ISA's expert", you might want to configure the ISA server in "standard" mode, by following step by step the standard configuration (port 80, etc etc) and then, LATER, try to play with different configurations. That's my opinion Danny