Hi, I couldn’t get this to work after I set the “advanced settings” as shown below. I did read through various discussions on the topics in the forum over the past year, but I still do not know what to do due to my limited understanding of networks. I would appreciate any help. Cheers!
I just noticed that one of my firewall rules routes all 443 traffic to a single VM. Could this be the problem?
Very likely. If you want to use port 443 for OpenVPN then you need to make sure that you are not using 443 also for any web server access via https. Any firewall rule will only be able to direct the traffic based on the port number because the traffic is encrypted and so you can not do any direction of the traffic based on whether it is openvpn or https traffic.
The same issue occurs when using DoH (DNS over HTTPS) where users use DoH to get round admins that want DNS to be controlled via controlled DNS server paths but again when you see traffic on 443, you cannot tell if it is web browsing https or DNS over HTTPS or OpenVPN.
If you only use 443 with tcp for OpenVPN then the OpenVPN system on IPFire will create a firewall rule that forwards that traffic to the OpenVPN server.
If you have an ISP that blocks all traffic that is not via port 443, ie blocks VPN access via any other port number then I would suggest finding a better ISP.
That makes sense. My intended network behind the IP address (A) cannot be accessed this way.
I have another IP address (B) that is not used for public access via 443. What will it take for my 433-based OpenVPN tunnel through B, once established, to be directed to the network behind IP address A?
Cheers,
Bo
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Regards
