I have a problem that is similar but subtly different than these threads:
http://forums.srcds.com/showthread.php?t...4#pid27084
http://forums.srcds.com/viewtopic/585/%7Bpage%7D
My left4dead2/web/teamspeak server is visible to the outside world.
http://dragineez.com:8774
http://fpsmeter.org/p,view;120185.html
If I'm in a game, people can join in. I haven't had anyone try to connect and play their own game, but I see no reason why it wouldn't work. If I create a lobby and use mm_dedicated_forceserver to connect to the local IP address, everyone in the lobby except myself fails to join game (which makes sense). However, I cannot resolve to the real external IP address.
The problem is that when I'm at home, on the same LAN as the server, I can only see it by its local IP address. Any links, references, etc. that "go out and come back" don't see anything. I'm running a TeamSpeak3 server on that same box and I had to change all the banner URLs to the external address so outside users could see them (makes perfect sense). But now I cannot see any of the banner graphics. Likewise with the game server banner and motd. External users can see them, I cannot. Not at home on the same network anyway. Because of this symptom, it's definately a network issue of some kind - not a srcds issue (same symptom, different server software, same server, same network). Strange thing is that, from the server I can ping dragineez.com and it comes back with the correct external IP address.
Server is in the DMZ, so it's not a port forwarding issue. Router config for DMZ is by ethernet port, not IP. It can't be plugged into the wrong port or the outside world wouldn't see it.
I have a friend with a very similar set-up (FIOS, local web/teamspeak/game server, DNS entry) that does and always has resolved back to itself. I'm stumped.
Any hints or advice would be appreciated.
I suspect it is a loopbadk issue.
#1 Lookback tuned off?
#2 Loopback filtered / blocked?
#3 OR the router does not support loopback
Points to portforward.com -> forums -> Knowledge Base -> router does not have loopback support
Direct Link: http://boards.portforward.com/viewtopic.php?f=6&t=109
What I suspect is that Verizon blocks loopback. I've already thought of the host file modification solution. But that won't work for what I want to do. In order to initiate a multiplayer Left4Dead2 game on my server through the lobby system and have other join I MUST connect to the server via its external/public IP address, not a spoofed internal one. Same with graphic and map uploads to players from the web server and banner graphics/uploads/downloads from the Teamspeak server. These have to resolve to the external/public IP address.
Many DSL routers/modems prevent loopback connections as a security feature. This means that a machine on your local network (e.g. behind your DSL router/modem) cannot connect to a forward facing IP address (such as 199.149.252.44) of a machine that it also on your local network. Connecting to the local IP address (such as 192.168.2.40) of that same machine works fine.
From: http://opensimulator.org/wiki/NAT_Loopback_Routers
So it looks like the FIOS router prevents loopback connections. Does anyone know of a way to turn this off?
Start a new topic or ask questions in the open forum.
