Signed-off-by: Andrew Bartlett <abartlet@samba.org>

samba-functionality/overview.md

@@ -44,8 +44,8 @@ This can be used to create a central print server.
 
 ## [Active Directory Domain Controller](https://wiki.samba.org/index.php/Setting_up_Samba_as_an_Active_Directory_Domain_Controller)
 
-Active Directory is often described as a combined LDAP, Kerberos and
-DCE/RPC server backed on to a common database
+Active Directory is often described as a combined LDAP, Kerberos,
+DCE/RPC and DNS server backed on to a common database
 ([sam.ldb](../protocols-and-subsystems/sam.ldb) in Samba).
 
 It provides secure centralised authentication, authorization as well
@@ -79,7 +79,8 @@ authentication server for this protocol.
 ### [DCE/RPC Server](dce-rpc-server)
 
 This implements as much of Microsoft's version of DCE/RPC as is
-necessary for Samba.
+necessary for Samba, including key services like [LSA](dce-rpc-server#lsa),
+[SAMR](../protocols-and-subsystems/samr) and [NETLOGON](dce-rpc-server#netlogon)
 
 ### [Replication client and server](drs-replication)
 
@@ -91,8 +92,8 @@ multiple domain controllers.
 Group Policy turns out to be quite simple on the server, it simply
 consists of files that the clients download and parse, so this is
 actually a function of the file server and the `[netlogon]` share.  It
-is critical for security that access to this share only be made over a
-SMB signed connection, and clients need to enforce this.
+is critical for client security that access to this share only be made
+over a SMB signed connection, and clients need to enforce this.
 
 ### DNS Server