So, my server is running for a while now and all was good… This morning we randomly got this error ( see attached image ) :
My server is up and running … i tried the canyouseeme website… i tried the info json one … all seems good … I added rules to open the port etc… Nothing seems to be working and i’m out of options/ideas.
Please help ? 
Player are seen connecting and being allowed entry … but no errors nothing in the console
What OS are you using?
Windows: 30120/40120 both UDP and TCP
Linux: ufw allow 30120,40120 && ufw reload
Why do you need to open port 30110, its not used for anything unless you setup a separate “sv_master1” which most don’t.
If people are using a separate call sv_master1 you should only allow TCP through and preferably only allow it through as a response as ingress, as to my knowledge, does not send HTTP requests directly to the server.
Windows!
Open Windows Defender Firewall:
If this doesn’t help with the ports, check YouTube or browse the forums – more content around there. In the case this doesn’t resolve the initial problem, reply further.
Out of habit, post edited.
Sadly didnt solve the problem …
Not sure what the issue is. I’m unfamiliar with “Guardian”, could that be intercepting or modifying packets?
Nah Guardian is a script that detects people’s whitelist from discord roles
i re-installed my hosting server, re-installed a fresh fivem server… still get the same error i dont know whta to do anymore lol … hosting is offering no support
Found the problem ! It was something very specific and new to OVH that i didnt know about. Thanks !
Was it the OVH auto-DDoS protection firewall system? I’ve dealt with that in the past and it just came to mind.
Nope, they have for their game dedicated servers a section called network where you can enter IPs used by games into a game firewall thing to open the port to… So even if i was opening the ports on the 'host pc" this firewall thats in my client dashboard would block them.
Hi, could you show me how you solved it? I also have OVH and I have the same problem :c
como lo solucionaste ?
So, little update if anyone still have trouble with this and since the interface of OVH changed.
Here’s the step by step:
On the left side of the interface, the blue bar. Go to Network ( should be the third icon that looks like a snowflake ) then click on Public IP. You will see the ip of your box ( which should be the one you use for your server ) and at the end of that line there should be some ’ … ’
Click on the dots and then click on configure game firewall. Add a new rule, choose other since Fivem is not listed and in both port type 30120. Click the check mark at the end of the line.
Now test again and all should be good
dunno if that could be linked ?