On 8/7/2013 2:09 AM, Stuart Henderson wrote:
Normally port-restricted cone, or with static-port it's similar to symmetric
(but obviously static-port can't work when two internal machines use
the same port).
With increasing use of cgnat in some large service provider networks you can
be sure to see more nat-related problems with v4 over time...
Is VPN or IPv6 an option instead?
IPv6 is not an option. I've been pushing for VPN, but this is the only
software that would need it. From my experience a VPN is tough to setup
when your endpoints use different hardware (brand/os). I'll be honest, I
know little about it. I was never properly trained on it.
For some reason I used to think "static-port" gave Full Cone NAT. After
I realized my mistake, I was able to identify some connectivity issues.