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Server disappearing from list
I've been seeing a lot of posts about servers not appearing, or appearing and disappearing from the server list. I've been assuming this is down to firewall issues especially when the servers are running on private / dynamic addresses and NAT is involved. Well, now it is happening to me.
I'm running the Linux version of the nwserver software on a physical server, with a static address and no VM involved. There is a Linux firewall (iptables) which allows through UDP port 5121 inbound and allows all outbound traffic. The server was appearing in the list but now it isn't. There has been no change on the firewall and obviously the IP address has remained fixed. It was originally working without having to use the publicserver option set to 1 on the command line, but I have now tested with and without that setting without making any apparent difference.
I'm now trying to understand the process by which the server registers with the master server. I'm running a packet tracer and can see any traffic that I might want to look at, but would appreciate any clues about what I should be expecting. Looking at the server binary image I can see the string "nwmaster.beamdog.net" which resolves to 188.8.131.52. I was expecting some sort of communication to that address but I'm seeing nothing. Could that be the cause of my problem, and does anyone have ideas about what to try next?