hello , (1) i ask u some little question . i have domain server and dns in server20000 .i install Isa 2000. i have some problem . ( HOW CAN SEE THE CLIENT MAC ADDRESS) AND ( HOW CAN RESTRIC THE MAC ADDRESS IN DOMAIN SERVER ) I INSTALL SYGATE SO STOP THE MAC ADDRESS IN WORKGROUP . BUT I HAVE DOMAIN SO PLZ HELP ME AND SUGEST HOW CAN RESTRIC MAC ADDRESS. (2) And i have web server and i start the sock server . so how setting in upstream server and sock server . u remember i have ADS (domain server ) plz tell me step by step thnx