SOLVED Server not accessible from the big bad world

Goanna

Goanna

Registered
OK I've setup a steamcmd server on the same machine as the game is located. I can see it and able to join in steam server list and ingame as a LAN server, however a friend in another state cannot see it, either ingame or via the steam server list.
We can both see it here =>https://fun4all.lt/serverlist/v2/rF2.php and here => https://simracepackages.lima-city.de/rF2server/, clicking on the join server links on either of those sites returns an "Invalid Server Details" error.... I can hear the screaming now that the ports are setup wrong, but i would disagree;
Ports in server's Multiplayer.json 27013 for http and 54297 for simulation;
upload_2025-10-14_7-45-4.png


upload_2025-10-14_7-45-45.png


Webui port in server's player.json is changed to 5398.
upload_2025-10-14_7-46-36.png


Screen of router's port forwarding;
upload_2025-10-14_7-41-50.png

and yes the server ip is correct;
upload_2025-10-14_7-43-15.png


I've tried with windows defender turned on (deleted all rF2 rules and recreated new rules for rF2) and also turned off, still the same error.
We've also tried a shortcut at mates end using the +connect command (to my external IP address and port 27013, same error.
I should mention that my friend is also trying to setup a steamcmd server and is running into the exact same problems..

I'm fast running out of ideas, so any thoughts chaps and chappettes.
I'm fast running out of ideas
 
What happens when you use the "default" HTTP Server Port 64297 (don't forget to open it for TCP and UDP) and WebUi Port 5397, in the Server Files?
 
redapg said:
What happens when you use the "default" HTTP Server Port 64297 (don't forget to open it for TCP and UDP) and WebUi Port 5397, in the Server Files?
Click to expand...
I forgot to ask:
Is "Enable Autodownloads": set to true in the Multiplayer.JSON of the Server?
 
redapg said:
What happens when you use the "default" HTTP Server Port 64297 (don't forget to open it for TCP and UDP) and WebUi Port 5397, in the Server Files?
Click to expand...
Tried that, 64297 tcp and 64298 and 64299 UDP, still not showing in steam server list, I can join using the +connect 127.0.0.1:64297 desktop shortcut, friend can’t see in steam server list nor ingame, and website joins give the invalid server details error. When I put the server webUI port to 5397(which is the same as the game) then I start server, then steam, then as soon as I start the game it will immediately kill the server process and hang the game, Alt F4 need to kill, so server is back to 5398.

redapg said:
I forgot to ask:
Is "Enable Autodownloads": set to true in the Multiplayer.JSON of the Server?
Click to expand...
Yes

The computer was connected via wireless to router, so I thought it may have been the problem, but still get the same when using Ethernet connection. Didn’t mention earlier that I’d also rerun the runtimes in the support folder and the additional ones mentioned in other posts and on discord (2015-2022 I think they were).
 
Ok.
I can only offer to try to help solving the Problem in a private Conversation (to not to flood this Thread).
If you are interested, please open a private Communication with me.
 
redapg said:
Ok.
I can only offer to try to help solving the Problem in a private Conversation (to not to flood this Thread).
If you are interested, please open a private Communication with me.
Click to expand...
This is all the thread is about! What's wrong with flooding it :p
 
Goanna said:
OK I've setup a steamcmd server on the same machine as the game is located. I can see it and able to join in steam server list and ingame as a LAN server, however a friend in another state cannot see it, either ingame or via the steam server list.
We can both see it here =>https://fun4all.lt/serverlist/v2/rF2.php and here => https://simracepackages.lima-city.de/rF2server/, clicking on the join server links on either of those sites returns an "Invalid Server Details" error.... I can hear the screaming now that the ports are setup wrong, but i would disagree;
Ports in server's Multiplayer.json 27013 for http and 54297 for simulation;
View attachment 56770

View attachment 56771

Webui port in server's player.json is changed to 5398.
View attachment 56772

Screen of router's port forwarding;
View attachment 56768
and yes the server ip is correct;
View attachment 56769

I've tried with windows defender turned on (deleted all rF2 rules and recreated new rules for rF2) and also turned off, still the same error.
We've also tried a shortcut at mates end using the +connect command (to my external IP address and port 27013, same error.
I should mention that my friend is also trying to setup a steamcmd server and is running into the exact same problems..

I'm fast running out of ideas, so any thoughts chaps and chappettes.
I'm fast running out of ideas
Click to expand...

upload_2025-10-14_12-40-4.png


Just make sure that all entries are pointing to your LAN IP. Above is mine working.
 
Goanna said:
Did that this morning Woodee but still no go :-(
PM sent Chris.
Click to expand...

I have seen custom ones used in replacement of 64297, might be worth a go just in case your ISP is being annoying. Also Windows Defender/firewall not getting in the way?
 
Woodee said:
I have seen custom ones used in replacement of 64297, might be worth a go just in case your ISP is being annoying. Also Windows Defender/firewall not getting in the way?
Click to expand...
Tried several different ones, all still a no go, with windows defender I’ve tried deleting all rules pertaining to rF2, created new ones manually, also let it create rules automatically when starting the server(the one where it asks if you want to allow this app internet access) and nada.
Redapg and I have been trying a few things, that’s on pause for the moment because I was googling my ISP and saw that they support both ipv4 and ipv6, but prefer ipv6, I’m ringing them later this morning to see what’s what. rF2 uses ipv4, so if their go to is ipv6 I’ve got to see how that can be changed.
 
Annnnnnnd we have a winner... rang the ISP and opted out of ipv6 on their end and also disabled ipv6 on windows 11, result was still the "Invalid Server Details" error. After seeing 8ball's post I googled my ISP and saw that they did use CGNAT, so rang them back and opted out, which they were happy enough to do. Upshot is the server now works as prescribed, I can see it and join from the steam server list, ingame and the 2 Server list websites.

Thanks all and big thanks to @redapg for his assistance in pm's.
 
I never would have thought that it could be something like that, because i never had such a Problem, caused by my Internet Service Provider.
I'm happy that it works for you now. :)
 
redapg said:
I never would have thought that it could be something like that, because i never had such a Problem, caused by my Internet Service Provider.
I'm happy that it works for you now. :)
Click to expand...
I’d heard of ipv6 problems before but not the CGNAT one, another quirk to add to the memory bank ;-)
 
To no one in particular.

May sound dumb, it's best way to offline as well.
Races don't pause, racing on same computer there is no lag.
Set grids, swap opponents, make changes on the fly.
Testing cars and skins you can swap in garage, save heaps of track reloads.
Lap times are retained and displayed from each car you drive in session.
Get car stuck off track / causing yellows , use Borderless/ windows key and bring up dedicated menu while you are still lapping to boot offending car :p
 
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