[MSDN Library June 1998] Using TCP/IP Utilities to Troubleshoot (41.2393862123369%)
MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT Server 4.0 Resource Kit > Windows NT Server Resource Kit - Supplement 2 > Troubleshooting PPTP on Microsoft Clients > Troubleshooting PPTP on a Windows NT-based PPTP Client