We have many internal websites behind Pritunl. We are able to access all the websites when we are connected to VPN. But when our device is connected with 5g network mobile hotspot, we are able to connect to VPN but the internal site doesn’t load for us giving us timed-out error
This is likely a MTU issue, a recent release fixed the MTU option. After getting the latest release set the Connection MTU option to 1300 and test the connection.
Hi Zach, Thanks for the reply. I want to know if we need to upgrade both Pritunl server and client or just the server for this to be effective?
Only the server would need to be upgraded.
I had a similar issue with my airtel mobile hotspot with 5g network. What I understood is Airtel is providing unlimited data connection while we are on 5g network they applied some vpn port forwarding or filtering that causing this issue. I handle it I lower the network from 4g to 5g connection from my mobile settings. it loads the web portal as expected. Give a try it should work for you as well.
A lot of cellular connections more often ones outside of the United States use carrier grade NAT. This will cause MTU issues and may prevent UDP servers from working. Switching the server to TCP and lowering the MTU may fix the issue.