How to disable a port in RHEL?

Question

In my RHEL system I have enabled a port using,

/usr/bin/firewall-cmd --zone=public --add-port=50000/tcp --permanent

Now how will I disable it? Can anyone help?

Answer 1

I believe disable means closing a port and you can use IPTABLE something like

$ iptables -A INPUT -p tcp --dport 50000 -m state --state NEW,ESTABLISHED -j DROP

You will require root privileges or SUDO.

Comments

I dint try this one but i have found a solution with the same "firewall-cmd" command,

firewall-cmd --zone=public --remove-port=50000/tcp

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cool thanks for the update