It's hosted on a remote server, not my PC though. Two days ago I was hosting a 1.127 server and 20 people joined it, now that it's 1.131 only 2 or 3 people joined it, should that worry me or is it just a coinkidink?
Edit: I'll try disabling my firewall and try a DMZ thing to see if it's my internet blocking it, I've added loads of firewall exceptions though..
Edit: I set the DMZ to my IP, disabled my windows firewalls and turned off Avast. It still didn't show up in the list

Edit: I tried
iptables -A OUTPUT -p udp --source-port 7240:7245 -j ACCEPT but that didn't show any confirmation message so it's probably wrong, and
iptables -l give me
iptables v1.4.2: Unknown arg `(null).
iptables -A INPUT -p udp --destination-port 7240:7245 -j ACCEPT also showed no confirmation.
-Other people seem to be able to join, just not me :\
19:22:41 - Darkrust has joined the game with ID: 129244
19:22:49 - Drahkir has joined the game with ID: 130356
19:23:07 - Surithion has joined the game with ID: 131494
19:23:47 - Alzender has joined the game with ID: 123300
Edit: It seems I can host and see with the module Finland At WW2 