Added missing auth_request

Author: ffdixon

_posts/2019-02-15-install.md

@@ -261,6 +261,8 @@ $ sudo bbb-conf --setip bbb.example.com
 $ sudo bbb-conf --check
 ```
 
+If you are upgrading from a very old version of 2.2.x and `sudo bbb-conf --check` still shows the older version after the above steps, try `dpkg --configure -a` and then repeat the above steps again.
+
 ## Upgrading from BigBlueButton 2.0
 
 If you installed a previous version of BigBlueButton 2.0 and then made custom changes, you need to backup your changes first.  After you backup your changes, can then use [bbb-install.sh](https://github.com/bigbluebutton/bbb-install) to upgrade or follow the steps below.  After the upgrade, reapply your changes.
@@ -747,6 +749,9 @@ Next, the websocket forwarding address in nginx.  Edit the file `/etc/bigbluebut
   proxy_send_timeout 6h;
   client_body_timeout 6h;
   send_timeout 6h;
+
+  auth_request /bigbluebutton/connection/checkAuthorization;
+  auth_request_set $auth_status $upstream_status;
 }</code></pre>
 
 Note: As of BigBlueButton 2.2.29, you can have nginx proxy incoming WSS connections to WS on port 5066 to work around a [bug in FreeSWITCH](https://github.com/bigbluebutton/bigbluebutton/issues/9667).  If you are using 2.2.29 or later, you can run the following BASH script to implement the workaround: