How open port?

I have CentOS 6.0 64-Bit with csf v7.56 enabled



I will browse my chat application by:



http://server_ip:9001/socket.io/socket.io.js



So I should open port 9001 How do it?



I have not this file on my server /etc/sysconfig/iptables



Thank you for your help.

How open port?