My friend cant connect to my server

[Kolinski]

So I do *New server* and I put 10308 for the port. I start the server and I give to my friend the IP it showed me and the password. But It says that the server Is offline.

[Troll Norris]

Do you have public IP?

[Kolinski]

yea

[Insônia]

For ipv4:
you need a "public IP".
You need set up a firewall rule for that port or dcs.exe.
You may need set up portfoward rule on the router if server behide a NAT router.

[Kolinski]

I am no Internet expert so I understood nothing of what you told me.

[Troll Norris]

Thing is: there can not be more than 4 294 967 296 IPv4 addresses. All of those have been exhausted in 31st January 2011 and the last available IP address was assigned on September 24, 2015 in North America. Because of this, for example, 100 people have the same IP address. They are connected via a NAT server (something like a router for a huge number of people).

In order to host a server, you have to have a public address. That means you need that one of the 4 294 967 296 IP addresses to be yours and no one else's. You need to ask your ISP if you have a public IP address, and if not, how much it would cost to get one. Usually it's for some monthly fee of around $10.

https://youtu.be/FTUV0t6JaDA?si=28DnJNuVMriW3hBj

The long run solution is move to IPv6 protocol which have 340282366920938463463374607431768211456 public addresses.

[Troll Norris]

Or you can buy some server hosting.
https://www.fox3ms.com/

[Kolinski]

Well I forgot to say that It used to work and my friend were able to connect they no longer cant. It says server offline. Is it because my port. Any port should I try ?

[Troll Norris]

10308 TCP/UDP

[Kolinski]

Yes 10308 doesn't work. 1 months ago It used to work fine. My friend used to be able to join me with my Public IP. Maybe It my port maybe not. Any other port that could work ?