Case Study – No one can access the server after setup VPN

Situation: One client tried to setup VPN by selecting Remote access (dial up or VPN) option under RRAS Setup Wizard. The VPN server worked and outside VPN client could access it.

Problem: As soon as the VPN enabled, no one in the LAN could access the server any more.

Troubleshooting: we used PortQry to scan the server and found the server blocking all ports except 1723. When installing Remote access (dial up or VPN) option, the RRAS Inbound and Outbound Filtering blocks all traffic except VPN by default.

Recommendation:

1. He can setup VPN using Incoming Connection.
2. Modify the Inbound and Outbound manually to allow LAN traffic.
3. Setup VPN and NAT for the better management.

Related Topics

Auto VPN
Browsing over VPN
Setup Windows VPN Client
Setup Windows VPN server
VPN Setup

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