How can i open telnet port manually?

Question

i want to connect other systems on my lan but port 23 of telnet is busy

Answer 1

Port 23 SHOULD be open.

It could be it in use by another process.

Try another computer...

You could also open it on your router... but as I said... by default port 23 is open.

Answer 2

If you want to listen on port 23 you need some telnet server software to be listening. Not all OS's come with a telnet server by default.

Ensure any security software is not blocking incoming\outgoing connections.

Simple!

Answer 3

can you provide more info about what you are trying to do?

does one of the machines have a firewall blocking port 23?

are you trying to telnet into your router and getting a port unavailable message?