Hive: HKEY_LOCAL_MACHINE
Key: SYSTEM\CurrentControlSet\Services\RasMan\PPP
Name: Logging
Type: REG_DWORD
Value: 1 standard log
Value: 2 verbose log
Each session will now be appended to the file %systemroot%/system32/RAS/ppp.log. To stop logging perform the steps above but set the value back to 0.

Note: If you are using the Routing and Remote Access Service update, this doesn't work. See Q161426 - How to Enable Logging with Routing and Remote Access.

RAS Tips:

Alert - Win98 2nd Edition now supports 128-bit encyption Q244214
Auditing
Autodisconnect interval
Callback interval
Determine in Logon Script Whether Client Is Connected by RAS or LAN
Disable DUN's Save Password option
FAQs: Dial-Up Networking and RAS Questions technote Q162293
Log connections
log PPP connections
Max unsuccessful logon attempts
Max time limit to successfully logon
NetBIOS gateway
Prevent connections from closing when logging off
Remove Dial-up Logon Checkbox
Rings, Control number of rings before RAS server answers
Troubleshooting PPTP Connectivity Issues in Windows NT 4.0Q162847
User Cannot Log On to LAN Because of RAS Logon Failures Q177125

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