I am using ISA server 2000 in workgroup environment, my firewall clients are connected to internet using ISA Server 2000 and working fine, but when my firewall clients create new VPN connection for accessing the VPN server(PPTP-Based) which is at another location they are unable to connect to that VPN server,What should i do on the ISA server 2000 so that my firewall clients of internal network can connect to the VPN server(which is at another location)?