Hello all, I'm in the process of setting up a client server network using Windows SBS 2003 including ISA. I have three client computers that need to connect to the server via Windows VPN. I have managed to successfully connect each of the client computers to the server individually, however when I try to connect more than one client computer the second computer returns an error 721 the local computer did not respond. If I disconnect the first computer wait for about ten minutes then try to connect the second computer it will be successful. Can anyone suggest a possible reason for this problem, the server has 5 CAL's four of which are free.