# HTTPS with client certificate authentication

To protect your openHAB instance in the public Internet you can use client authenticate with SSL certificate feature.

Please see [community.openhab.org/t/using-nginx-reverse-proxy-for-client-certificate-authentication-start-discussion](https://community.openhab.org/t/using-nginx-reverse-proxy-for-client-certificate-authentication-start-discussion/43064).
