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# Add or Edit Port Mapping

The **Add or Edit Port Mapping** view allows you to add or change [port](/glossary/p/port) mapping settings.

## Configuration

^ Item ^ Description ^ Comment ^
| Rule Name | Rule name. | |
| Source Zone | Incoming [zone](/glossary/f/firewall_zone). | |
| Destination Zone | Destination [zone](/glossary/f/firewall_zone). | |
| Source IP Address | Source [IP address](/glossary/i/ip_address) (for filtering). | |
| Dst. Device | Client [hostname](/glossary/h/hostname). | |
| Dst. IP Address | Client [IP address](/glossary/i/ip_address). | |
| Protocol | Mapping [protocol](/glossary/p/protocol) | ([UDP](/glossary/u/udp) / [TCP](/glossary/t/tcp) / TCP + UDP ). |
| Public port(s) | Public (external) [port](/glossary/p/port). | |
| Private port(s) | Private (client) [port](/glossary/p/port). | |
| NAT Loopback | Enable [NAT Loopback](/glossary/n/nat_loopback) | |


### Protocol

The protocol setting filters traffic by protocol for the port forward.

^ Protocol ^ Description ^
| TCP + UDP | Both [TCP](/glossary/t/tcp) and [UDP](/glossary/u/udp). |
| TCP | [TCP](/glossary/t/tcp) only. |
| UDP | [UDP](/glossary/u/udp) only.  |


## Port Mapping Settings

To map incoming connections:

* Click the {{/icon/add.png?nolink}} **add** button to open the settings

The port mapping dialog lets you add configuration settings for the mapping.

Ports can be added one by one (`80`) or as ranges (`21:22`).


* Add information:

    * Add a name as identification

    * Add ports:

        * Add public/incoming port(s)

        * Add private/client port(s)

    * Select protocol

* Click **Save**

* Click **Close**

Your information is saved and is visible in the mapping list.