Firstly, can you recommend a Jingle echo test please.
Secondly, I would like there to be an echo test that refuses incoming
connections, easing the testing of port mapping.
Currently, if I want to test my UPnP port mapping (which so far has
not worked yet), I have to use 2 Internet connections with NAT, and
ask someone to answer the call or login remotely. Either way, this is
annoying and tedious.
It would be so much easier to just call an echo test that refuses
incoming connections therefore requiring port mapping to work.