The Mozilla SSL Configuration Generator has moved to a community working group managed project outside of Mozilla. The source code can be found at https://github.com/tlsref/configurator
This repository is now archived but continues to serve a GitHub pages site that redirects users from https://ssl-config.mozilla.org/ to the new site at https://configurator.tlsref.org/ . This is needed so that the links out on the internet and embedded in config files that have been generated in the past, continue to work and take users to the current site.