diff --git a/external_authentication.md b/external_authentication.md
index d1504d00e..6d6d82def 100644
--- a/external_authentication.md
+++ b/external_authentication.md
@@ -9,4 +9,13 @@ This method is the default one. Creating a user is very simple:
 1. Go into the Settings view, select "Users"
 2. You can create a *user* or an *admin*, with his password (or generate one)
 
-By default, a *user* won't have any permission. At the opposite, an *admin* will have every rights.
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+By default, a *user* won't have any permission. At the opposite, an *admin* will have every rights.
+
+## LDAP
+
+XO currently support connection to LDAP directories, like *Open LDAP* or *Active Directory*.
+
+To configure your LDAP, go need to go in the plugin section in "Settings":
+
+
+If you don't find the LDAP plugin in the list, be sure to have it displayed in your Xen Orchestra configuration:
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