[Nut-upsuser] Help with failing Nut slave/client connection

[Roger Price]

On Mon, 12 Sep 2016, Jonah Naylor wrote:

> I have two linux servers both with static IPs not using NAT.
> My slave can't connect to my host. Whatever I try.

I assume that these two machines are on the same LAN, so here are a few 
suggestions.  Can you ping from each one to the other?  Can you ssh from 
each one to the other?  Are they running firewalls?  Do both the firewalls 
allow traffic on port 3493?  Have you tested with netcat?  What do the 
firewall logs report?  Is there anything in dmesg, /var/log/messages or 
journalctl?

Roger