How to firewall a VPN running on Windows Server 2008R2

June 4, 2019 at 02:04:04
Specs: Windows Server 2008R2, P4 2.4GHz / 1 GB DDR
I have a Windows Server 2008R2 PC running in a LAN. It has 2 network adapters (one connected to the Internet and the other connected to the network switch). It also acts as a router using RRAS. I recently configured RRAS to also include VPN functionality so that I can connect from a remote PC and become part of the LAN.

So I am able to connect to this VPN from a remote PC, but now I am trying to set up a firewall rule on the server to block VPN connections from this PC. The server already had these firewall rules added and active:

Routing and Remote Access (GRE-In) , protocol GRE, port Any
Routing and Remote Access (L2TP-In) , protocol UDP, port 1701
Routing and Remote Access (PPTP-In) , protocol TCP, port 1723

Remote PC (client) runs Windows 10 and in the VPN connection properties I have selected "PPTP" as the VPN type. So I assumed that disabling the "PPTP-In" rule (blocking port 1723) in the server's firewall would prevent that PC from connecting to the VPN. But I was still able to connect. I then disabled all the rules, even set them to "block connections" but that didn't help either.

It's like the firewall has no effect on the VPN connections.

Any ideas on what might be the problem ?

message edited by Perplexer


See More: How to firewall a VPN running on Windows Server 2008R2

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