https://community.cisco.com/t5/network-security/firepower-realm-ad-join/m-p/3949334#M935837 <P>What purpose doe the AD join serve when creating a realm with the FMC?&nbsp; It seems to be the only difference between AD and LDAP is the AD boxes.&nbsp; Since AD is LDAP, why is there even two choices here?&nbsp; Why would I use one over the other?</P> Fri, 21 Feb 2020 17:38:18 GMT Michael Proctor 2020-02-21T17:38:18Z https://community.cisco.com/t5/network-security/firepower-realm-ad-join/m-p/3949334#M935837 <P>What purpose doe the AD join serve when creating a realm with the FMC?&nbsp; It seems to be the only difference between AD and LDAP is the AD boxes.&nbsp; Since AD is LDAP, why is there even two choices here?&nbsp; Why would I use one over the other?</P> Fri, 21 Feb 2020 17:38:18 GMT https://community.cisco.com/t5/network-security/firepower-realm-ad-join/m-p/3949334#M935837 Michael Proctor 2020-02-21T17:38:18Z https://community.cisco.com/t5/network-security/firepower-realm-ad-join/m-p/3949347#M935840 Hi,<BR />In AD the username attribute is "samaccountname" but the username value in LDAP is "uid". In other words if have an AD domain, you must define the "type" as AD in order for the FMC to determine the correct username value.<BR /><BR />HTH Mon, 28 Oct 2019 17:11:14 GMT https://community.cisco.com/t5/network-security/firepower-realm-ad-join/m-p/3949347#M935840 Rob Ingram 2019-10-28T17:11:14Z