[arm-allstar] OpenVPN Port Forwarding Update

[Mike Sullivan]

All, after a couple nights of overcomplicating things, I finally found an
easy way to set up OpenVPN and configure it with the club's node so I can
use it on a cell hotspot until we get a permanent internet line in.

I am renting a small VDS (virtual dedicated server) from SkySilk, running
Ubuntu 19.04. I followed their instructions on setting up OpenVPN and
generating client files. After setting up the client files on the node and
making sure that the two were communicating (which is indicated by the
added OpenVPN IP in the Allstar terminal window) I then went through the
tedious process of setting up port forwarding. After much screwing around
with UFW (Uncomplicated Firewall, ironically enough) I disabled it entirely
and found this instruction set on port forwarding using iptables:
https://arashmilani.com/post?id=53

Following those instructions, and making sure I entered iptables-save to
save the configuration to the server, I finally was able to port forward
correctly, forwarding ports for web, SSH, iax, and Echolink. Several
restart tests have confirmed it is working flawlessly, and I've tested
prepaid hotspots from both Verizon and Unreal Mobile (which works off
AT&T's network.. but is considerably slower)

Finally.. I can sleep.

Mike