quoted from
http://www.ChicagoTech.net
VPN XP Client Disconnects After One Minute
SYMPTOMS: After you install SP1 for XP, your computer may drop VPN
connections after about 55 seconds. This behavior may occur if ICS/ICF is
enabled.
RESOLUTION: 1) disable ICS. 2) disable ICF. 3) contact Microsoft Product
Support Services to obtain the fix.
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Robert Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN, Anti-Virus, Tips & Troubleshooting on
http://www.ChicagoTech.net
This posting is provided "AS IS" with no warranties.