# Add users through Identity management and authentication services

Rocket. Chat provides you with various options for adding users to your workspace.

### LDAP Directory

LDAP configuration on Rocket.Chat can be used to establish connections, used for authentication, storing information about users and sync your data.

**LDAP** (Lightweight Directory Access Protocol) enables anyone to locate data about your server or company.

To configure LDAP authentication, go to **Administration** > **Workspace** > **Setting** > **LDAP.**

{% content-ref url="../settings/ldap" %}
[ldap](https://funke-olasupo.gitbook.io/user-guide/6.5/use-rocket.chat/workspace-administration/settings/ldap)
{% endcontent-ref %}

### SAML

**SAML** (Security Assertion Markup Language) is used for exchanging authentication and authorization data.

To access SAML setting, go to **Administration** > **Workspace** > **Settings** > **SAML.**

{% content-ref url="../settings/saml" %}
[saml](https://funke-olasupo.gitbook.io/user-guide/6.5/use-rocket.chat/workspace-administration/settings/saml)
{% endcontent-ref %}

### OAuth

You can configure authentication methods beyond just username and password.

To access OAuth setting, go to **Administration > Workspace > Settings > OAuth.**

{% content-ref url="../settings/oauth" %}
[oauth](https://funke-olasupo.gitbook.io/user-guide/6.5/use-rocket.chat/workspace-administration/settings/oauth)
{% endcontent-ref %}

### CAS

**CAS** (Central Authentication Service) allows members to use one set of credentials to sign in to multiple sites over multiple protocols.

To access this setting, go to **Administration** > **Workspace** > **Settings** > **CAS**.

{% content-ref url="../settings/cas" %}
[cas](https://funke-olasupo.gitbook.io/user-guide/6.5/use-rocket.chat/workspace-administration/settings/cas)
{% endcontent-ref %}