Open a port without any service.

[Jason Long]

Hello,
I just can open and close a port that a service running on that port?
I have not any service on port 8080 and did:
# firewall-cmd --add-port=8080/tcp
success
# firewall-cmd --reload 
success
# firewall-cmd --list-ports
80/tcp 443/tcp

Why I can't see port 8080 in the list?

[Eric Garver]

On Wed, Mar 17, 2021 at 04:11:05PM -0000, Jason Long wrote:
> Hello,
> I just can open and close a port that a service running on that port?
> I have not any service on port 8080 and did:
> # firewall-cmd --add-port=8080/tcp
> success

You're manipulating the runtime configuration.
> # firewall-cmd --reload 
> success

Then reloading firewalld which means dropping the runtime and loading
the permanent configuration.
> # firewall-cmd --list-ports
> 80/tcp 443/tcp
>
> Why I can't see port 8080 in the list?

Because you reloaded. Your first command should use the --permanent
flag.

[Jason Long]

Thanks.
Thus, I must use:
# firewall-cmd --permanent --add-port=8080/tcp
?

[Eric Garver]

On Thu, Mar 25, 2021 at 09:09:34AM -0000, Jason Long wrote:
> Thanks.
> Thus, I must use:
> # firewall-cmd --permanent --add-port=8080/tcp
> ?

Yes. That's accurate.