I hope this is the right forum for this post. If not, I will remove/move it.
I have an OpenVPN/SSL RPi Server on one home network behind a Router/NAT and another OpenVPN/SSL RPi Client on another Router/NAT. They both use Port Mapping via UPnP to connect to each other over the Internet.
I'm looking for a better/cleaner/more robust solution since UPnP is not supported on all Routers, Public IP Addresses can/do change, and router's occasionally don't respond to UPnP requests and have to be rebooted. Plus enabling UPnP is a security risk.
It looks like a simple P2P Server service would work for me, but I can't find any software/info on how to set one up or how to configure OpenVPN/SSL on the RPi.
I have a public Internet server that can run PHP, Perl, etc.that I can set up for a P2P host. I just can't find any clues as to how to do this either.
I'm hoping someone can point me to a resource, or resources, I can read to figure this all out.