# Abiotic Factor Server Ports Reference (/docs/abiotic-factor/server-ports)



Default Ports [#default-ports]

| Port      | Protocol | Purpose                              |
| --------- | -------- | ------------------------------------ |
| **7777**  | UDP      | Game traffic                         |
| **27015** | UDP      | Steam query (server browser listing) |

Changing Ports [#changing-ports]

Ports are set via launch parameters in the **Startup** tab:

| Parameter          | Description |
| ------------------ | ----------- |
| `-PORT=7777`       | Game port   |
| `-QueryPort=27015` | Query port  |

See [Launch Parameters](/docs/abiotic-factor/launch-parameters) for the full list.

Related Guides [#related-guides]

* [Launch Parameters](/docs/abiotic-factor/launch-parameters)
* [How to Join](/docs/abiotic-factor/join-server)
* [Troubleshooting](/docs/abiotic-factor/troubleshooting)