hi

i have group of users who are using internet througth PAT, now some of the users trying to cunnect VPN servers over internet, problem is that the only user who is connecting the VPN server first, is able to get the VPN authentication, IP addresses and able to connect their required network behind VPN server. but concurrent users who are trying to access those servers behind VPN servers are only able to get the VPN authentication and IP address,not able to access those servers which are behind VPN server. please help me.