`verdaccio` as a sinopia fork it has backward compability with plugins that are compatible with `sinopia@1.4.0`. In such case the installation is the same.
Open the `config.yaml` file and update the `auth` section as follows:
The default configuration looks like this, due we use a build-in `htpasswd` plugin by default that you can disable just commenting out the following lines.
* [sinopia-crowd](https://www.npmjs.com/package/sinopia-crowd): auth plugin for sinopia supporting atlassian crowd.
* [sinopia-activedirectory](https://www.npmjs.com/package/sinopia-activedirectory): Active Directory authentication plugin for sinopia.
* [sinopia-github-oauth](https://www.npmjs.com/package/sinopia-github-oauth): authentication plugin for sinopia2, supporting github oauth web flow.
* [sinopia-delegated-auth](https://www.npmjs.com/package/sinopia-delegated-auth): Sinopia authentication plugin that delegates authentication to another HTTP URL
* [sinopia-altldap](https://www.npmjs.com/package/sinopia-altldap): Alternate LDAP Auth plugin for Sinopia
* [sinopia-request](https://www.npmjs.com/package/sinopia-request): An easy and fully auth-plugin with configuration to use an external API.
* [sinopia-htaccess-gpg-email](https://www.npmjs.com/package/sinopia-htaccess-gpg-email): Generate password in htaccess format, encrypt with GPG and send via MailGun API to users.
* [sinopia-mongodb](https://www.npmjs.com/package/sinopia-mongodb): An easy and fully auth-plugin with configuration to use a mongodb database.
* [sinopia-htpasswd](https://www.npmjs.com/package/sinopia-htpasswd): auth plugin for sinopia supporting htpasswd format.
* [sinopia-leveldb](https://www.npmjs.com/package/sinopia-leveldb): a leveldb backed auth plugin for sinopia private npm.
* [sinopia-gitlabheres](https://www.npmjs.com/package/sinopia-gitlabheres): Gitlab authentication plugin for sinopia.
* [sinopia-gitlab](https://www.npmjs.com/package/sinopia-gitlab): Gitlab authentication plugin for sinopia
* [sinopia-ldap](https://www.npmjs.com/package/sinopia-ldap): LDAP auth plugin for sinopia.
* [sinopia-github-oauth-env](https://www.npmjs.com/package/sinopia-github-oauth-env) Sinopia authentication plugin with github oauth web flow.
> All sinopia plugins should be compatible with all future verdaccio versions. Anyhow, we encourage contributors to migrate them to the modern verdaccio API and using the prefix as *verdaccio-xx-name*.
* [verdaccio-profile-api](https://github.com/ahoracek/verdaccio-profile-api): verdacci plugin for *npm profile* cli support and *npm profile set password* for *verdaccio-htpasswd* based authentificaton
> Not all these plugins are been tested continuously, some of them might not work at all. Please if you found any issue feel free to notify the owner of each plugin.