Red Hat build of MicroShift

Use optional port settings

To allow external access to services and APIs in MicroShift, you can add custom ports to your firewall configuration. Use the listed ports and protocols as a guide for HTTP, HTTPS, NodePort, mDNS, and API access.

For a complete list of ports and protocols, see "Optional ports".

The following examples show commands to open firewall access for services running on MicroShift.

Procedure

To add customized ports to your firewall configuration, use the following command syntax:
```
$ sudo firewall-cmd --permanent --zone=public --add-port=<port number>/<port protocol>
```
For example, to configure a port for the MicroShift API server, enter the following command:
```
$ sudo firewall-cmd --permanent --zone=public --add-port=6443/tcp
```
To close unnecessary ports in your MicroShift instance, follow the procedure in "Closing unused or unnecessary ports to enhance network security".