Hive: HKEY_LOCAL_MACHINE
Key: SYSTEM\CurrentControlSet\Services\RasMan\Parameters
Name: Logging
Type: REG_SZ
Value: 1
Each dial-up session will now be appended to the file %systemroot%/system32/RAS/device.log. To stop logging perform the steps above but set the value back to 0.

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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