how do you open the port 8088? I need to start live technical support chat.
I take it you have some kind of service defined that needs that port to be opened?
If not, create a service
Then open the port by the following command:
config set yourservice service status enabled TCPPorts 8088 UDPPorts 8088 access red,green
This will open port 8088 for TCP and UDP on both Green and Red interfaces.
You can find the info in the admin docs: http://docs.nethserver.org/projects/nethserver-devel/en/v7/services.html#access-network-service
Inbound or outbound?
Do you need a Port Forwarding?
how to delete this custom rule?
It’s not a firewall rule but a Network Service, only for avoid a not useful search into firewall rules.
Seems that documentation lacks the part for delete network services
To disable it:
config setprop yourservice status disabled signal-event firewall-adjust
To delete it entirely:
config delete yourservice signal-event firewall-adjust