Posted By: Anonymous
I am using CentOS 7 and I have to ensure that ports 2888 and 3888 are open.
I read this article but this did not work because on CentOS 7 OS there is no
iptables save command.
Someone told me that the above URL is not valid for CentOS 7. and I should follow this.
But this article is not clear to me on exactly what command I need to execute.
I also found
firewall-cmd --zone=public --add-port=2888/tcp
but this does not survive reboots.
So how can I open the ports and make it survive reboots?
Use this command to find your active zone(s):
It will say either public, dmz, or something else. You should only apply to the zones required.
In the case of public try:
firewall-cmd --zone=public --add-port=2888/tcp --permanent
Then remember to reload the firewall for changes to take effect.
Otherwise, substitute public for your zone, for example, if your zone is dmz:
firewall-cmd --zone=dmz --add-port=2888/tcp --permanent