smnirosh
You do not give specifics & details about what you are trying to achieve, so the best advice to give is unknown.
Take a look at the Port Forwarding panel, & use localhost as the destination, leave Allow Hosts blank
Quoting the panel text:
"Configure Port Forwarding
You can use this panel to modify your firewall rules so as to open a specific port on this server and forward it to another port on another host. Doing so will permit incoming traffic to directly access a private host on your LAN.
WARNING: Misuse of this feature can seriously compromise the security of your network. Do not use this feature lightly, or without fully understanding the implications of your actions.
Configure Port Forwarding
Select the protocol, the port you wish to forward, the destination host, and the port on the destination host that you wish to forward to. If you wish to specify a port range, enter the lower and upper boundaries separated by a hyphen. The destination port may be left blank, which will instruct the firewall to leave the source port unaltered."
Alternatively right at the start of that Firewall article is this link:
https://wiki.contribs.org/Firewall#Additional_information_on_customizing_iptablesNote this comment:
Apply your desired firewall restrictions to any existing SME 'service' or to a custom-named service that you have created. Combine a custom-named service with port-forwarding to create customized firewall rules.