I have Windows 2000 Server with VPN running. Any pc outside using Windows 2000 can connect and map network drives/transfer data. But all XP Pro/Home machines can connect but not able to ping or map any drives to server. Any ideas? MS Firewall has been disabled, various end user routers in use, Linksys router onsite being used with ports 1723 open and PPTP open. Even tried DMZ open, still connected but no data mapping or ping with XP. Please help. Thanks!