Microsoft Tunnel Gateway not working

Question

Microsoft Tunnel Gateway not working

Sabarivasan N 31

We have setup a Intune Microsoft tunnel Gateway on a RHEL 8.4 with Podman. Single NIC. Successfully installed and configured.

I can connect to any website from the Linux machine, it downloads files fine. Network is working fine from the machine. When the Mobile Device is connected and even server users shows the mobile device is connected but webpages does not load in Mobile.

Scott Pepper 0 Reputation points

2023-07-26T22:30:16.9733333+00:00

Hi, have you made sure your routing to the internal docker network is configured, ideally in your core router add a route to the docker subnet next hop the tunnel server

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Scott Pepper 0 Reputation points

2023-07-26T22:30:16.9733333+00:00

Hi, have you made sure your routing to the internal docker network is configured, ideally in your core router add a route to the docker subnet next hop the tunnel server

Answer 1

Crystal-MSFT 53,981 Microsoft External Staff

@Sabarivasan N, Thanks for posting in Q&A. From your description, the network shows connected but the webpages are unable to load If there's any misunderstanding, feel free to let us know.

To clarify the issue, please check the following information:

Check and see which DNS server it uses. And see if the webpage can access on it.
Check firewall config to see if both TCP, UDP 443 and UDP, TCP 53 are open.
Check if the DNS request is sent to the DNS server.

Please check the above information and if there's any update, feel free to let us know.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

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Sabarivasan N 31 Reputation points

2023-01-24T13:58:37.7533333+00:00
Thank you for the reply. I checked as said,

It uses the internal DNS server

The Ports are open

Since works fine through the server but not while mobile devices are connected. Anyway can check this?
Crystal-MSFT 53,981 Reputation points Microsoft External Staff

2023-01-25T09:18:42.4966667+00:00

@Sabarivasan N, Thanks for the reply. From your description, I know the ports are open. The webpage can work on the server but not via mobile device. To check the issue, I suggest open case to check the logs to see if there's any more finding. Here is a link with the steps to open case:

https://learn.microsoft.com/en-us/mem/get-support

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Microsoft Tunnel Gateway not working

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