Clients connected to Win10 VPN Server, yet no dataflow (Clients unable to browse)

Question

Clients connected to Win10 VPN Server, yet no dataflow (Clients unable to browse)

Kaz 1

Hi There,
I've created a PPTP VPN Server on Windows 10 (desktop) to which my laptop can successfully connect to (via VPN connection) - yet neither can I browse the internet nor map to the shared drives/folders present on the server from the clients. I followed this guide (https://pureinfotech.com/setup-vpn-server-windows-10/) to a T and tried various combinations of settings yet after 2 days I have not made much progress.
On the Win 10 VPN server - it shows 1 client connected along with the corresponding userID of that client as another network adapter icon yet if I right click the 'user Network Adapter' icon and check properties, it shows 0 packets sent/received. I clearly have the port (1723) forwarded correctly in my router as Its forwarding it to my server as expected since it shows client connected - but why no dataflow!?

Kaz 1 Reputation point

2022-12-20T00:59:16.6+00:00

So I just tried disabling my Windows firewall on the Win 10 Server PC and lo-behold, I was successfully able to access my network drive! So that begs the question - why is windows firewall blocking File Sharing?? I did try enabling all the File and Printer Sharing ports in both Outbound/Inbound Advanced Firewall Settings - but that didn't work - what else could there be?
I also tried enabling ALL Inbound/Outbound rules in the Advanced Firewall Settings (all rules by default set to allow thus perhaps I needed to Enable one of these rules) -- YET that did not work either.

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Kaz 1 Reputation point

2022-12-20T00:59:16.6+00:00

So I just tried disabling my Windows firewall on the Win 10 Server PC and lo-behold, I was successfully able to access my network drive! So that begs the question - why is windows firewall blocking File Sharing?? I did try enabling all the File and Printer Sharing ports in both Outbound/Inbound Advanced Firewall Settings - but that didn't work - what else could there be?
I also tried enabling ALL Inbound/Outbound rules in the Advanced Firewall Settings (all rules by default set to allow thus perhaps I needed to Enable one of these rules) -- YET that did not work either.

Answer 1

Limitless Technology 44,741

Hello there,

A DNS configuration issue is the most common reason you cannot browse the internet when connected to the VPN. Are you able to ping from the client's devices?

This issue may occur if you configure the VPN connection to use the default gateway on the remote network. This setting overrides the default gateway settings that you specify in the Transmission Control Protocol/Internet Protocol (TCP/IP) settings.

To resolve this issue, configure the client computers to use the default gateway setting on the local network for Internet traffic and a static route on the remote network for VPN-based traffic.

You can follow the troubleshooting steps from the below article and see if that helps you
https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/cannot-connect-to-internet-vpn-server

Hope this resolves your Query !!

--If the reply is helpful, please Upvote and Accept it as an answer–

Kaz 1 Reputation point

2022-12-21T02:24:43.263+00:00

I've already seen this link you posted and it does not have any instructions for Windows 10 server rather Windows 2000 Server/Windows NT Server 4.0 only (essentially I was not able to find the properties of RRAS on Win10, you can just enable or disable this service, NOT modify its properties on Win 10 Pro).
And yes I am able to use telnet to establish a connection from client PC to the server.

The main concern is this - WHY am I able to map/access the shared network drive on the server IF I DISABLE the firewall on my server?? IF it was DNS settings as you suggest, I should NOT have been able to access the shared drive even with the firewall disabled.

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Clients connected to Win10 VPN Server, yet no dataflow (Clients unable to browse)

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