Detail the VPNs and explain which VPN does what

docs/servers.rst

@@ -10,7 +10,8 @@ option is available.
 
 **cm-webdev01-master01** is the webdev mysql server.  See :ref:`db-cluster`.
 
-**cm-vpn01** is where our server logs are copied.
+**cm-vpn01** is where our server logs are copied. Note that you need to file
+a bug to get access to this server.
 
 Served Environments
 -------------------
@@ -24,11 +25,22 @@ There are two or three main environments for our web sites:
   * This is what will go live to production.
 * **production**
 
+.. _vpn-info:
+
 VPN
 ---
 
-To get to any Mozilla servers you will need VPN access.
+To get to any Mozilla servers you will need VPN access. There are two VPN
+networks: Mozilla-MV (Mountain View office VPN) and Mozilla MPT (for access
+to khan, staging servers, etc.).
+
+If you want to use Mozilla's shared network volumes (like ``fs2``) you can
+connect to the Mozilla-MV VPN.
+
+If you need to access khan, database servers, or the cm-vpn01 server, connect
+to Mozilla MPT.
 
 We recommend Viscosity_ for VPN.
 
+
 .. _Viscosity: https://intranet.mozilla.org/IT_MPT-RemoteAccess#Viscosity_.28TunnelBlick_alternative.29