[AeroAcrobat]

what is the maximum number of ports for one ip address?
Im not sure if I can only use these 27015-27030.

If I'd like to have 20 tf2 servers on a dedicated server with one ip, what ports do i need to bind them ?

[sake]

AFAIK you could even use port 80 for a CS server...

[MonkeyDrone]

Originally Posted by AeroAcrobat what is the maximum number of ports for one ip address? Im not sure if I can only use these 27015-27030. If I'd like to have 20 tf2 servers on a dedicated server with one ip, what ports do i need to bind them ?

You can use any port number for 20 servers on your server, best practice here would be that you implement a gap of an interval of 5.
E.g.

27015
27020
27025
27030
27035
and so on and on for the 20 servers.

Also depending on the number of cores you have. Best advisable that you Taskset your servers if your running a linux based server. Cheers.

[AeroAcrobat]

Originally Posted by MonkeyDrone You can use any port number for 20 servers on your server, best practice here would be that you implement a gap of an interval of 5. E.g. 27015 27020 27025 27030 27035 and so on and on for the 20 servers. Also depending on the number of cores you have. Best advisable that you Taskset your servers if your running a linux based server. Cheers.

thanks for that.
why using a gap ?

[Mordekay]

The maximum numbers of ports for one IP is around 65000. You can use any port for a cs-server, but should drop port from 0 to 81 as some of them are used for standart usage. Example 80 http, 21 ftp, 22 ssh and so on.
The number of cores, i wonder why you ask that. I can run as many servers i want on my ip, simply adding a router and putting more pc's on that. the limitation in most cases is your bandwidth, not the number of cores.

[AeroAcrobat]

Originally Posted by Mordekay The maximum numbers of ports for one IP is around 65000. You can use any port for a cs-server, but should drop port from 0 to 81 as some of them are used for standart usage. Example 80 http, 21 ftp, 22 ssh and so on. The number of cores, i wonder why you ask that. I can run as many servers i want on my ip, simply adding a router and putting more pc's on that. the limitation in most cases is your bandwidth, not the number of cores.

thanks!
I just wanted to be sure bcs I could only run 5 servers on my home pc the rest just didn't showed up in steam server list.

now i know

[8088]

Originally Posted by Mordekay The maximum numbers of ports for one IP is around 65000.

2^16 = 65535 to be exact.

You can use any port for a cs-server, but should drop port from 0 to 81 as some of them are used for standart usage. Example 80 http, 21 ftp, 22 ssh and so on.

Actually, to be safe, it's best to avoid any port below 1024. In Linux it even requires root privileges to bind to a lower port. But even when you're using higher ports, to avoid conflicts it may be wise to look up if your desired number isn't conflicting with a service that uses a registered port.