Hallo all.. I just want to know. Are there any body know, how to protect user name and password sharing to use service of ISA?.. In this case, If some one have user name to log on internet, but he give his username and password to his friend that need connect to internet with his account?. So, who is the first using that username, and the second user will be reject by ISA server. Thx for attention. I'll wait for your support