How to make a port listen in Oracle Linux

Guys,
I need to make a port (8001) to LISTEN on my server for allowing another remote server to telnet to mine using this port.
For example:
root@remoteserver# telnet myserver 8001
Please let me know how to do this.

Thanks for the reply.
I meant the same, opening the port for an application. Firewall is not running.
I used Telnet just to check the port.
Working node:
[root@node1~]# netstat -antup | grep 8001
tcp        0      0 ::ffff:34.36.134.150:8001   :::*                        LISTEN      37591/java
tcp        0      0 ::ffff:34.36.134.150:8001   ::ffff:34.36.134.131:64801 ESTABLISHED 37591/java
tcp        0      0 ::ffff:34.36.134.150:8001   ::ffff:34.36.134.131:64478 ESTABLISHED 37591/java
[root@node1~]#
Issue node:
[root@node2~]# netstat -antup | grep 8001
tcp        0      0 ::ffff:34.36.134.151:8001   ::ffff:34.36.134.132:7001   ESTABLISHED 6057/java
[root@node2~]#

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