Add Ntopng (#53)

source/manual/how-tos/ntopng.rst

@@ -0,0 +1,33 @@
+======
+ntopng
+======
+
+------------
+Installation
+------------
+
+First of all, you have to install the ntopng plugin (os-ntopng) from the plugins view
+reachable via **System->Firmware->Plugins**.
+
+After a page reload you will get a new menu entry under **Services** for ntopng. If you
+don't have Redis plugin installed, you'll receive a warning in ntopng main menu. Please
+go back to **System->Firmware->Plugins**, install os-redis, change to **Services->Redis**
+and just enable the service. That's enough to run ntopng.
+
+----------------
+General Settings
+----------------
+
+:Enable ntopng:
+    Enable and start ntopng.
+:Interfaces:
+    Here you set the interfaces ntopng should listen on. If you don't select any interface
+    it listens to the first in the system, e.g. em0, but you can change the interfaces 
+    within ntopng's UI on demand; while setting an explicit interface you wont get any 
+    other interface presented in its own UI.
+:HTTP Port:
+    The port ntopng's UI should listen on. When you leave it on the default just open a 
+    browser and go to your Firewall IP with port 3000 and HTTP. If you want to secure the 
+    connection feel free to setup HAProxy or Nginx as a reverse proxy (SSL offloading).
+:DNS Mode:
+    Here you can choose if ntopng should try to resolve IPs to host names.

source/manual/howtos.rst

@@ -44,6 +44,7 @@ How to's
    how-tos/nginx_basic_auth
    how-tos/nginx_tls_auth
    how-tos/nginx_waf
+   how-tos/ntopng
    how-tos/openconnect
    how-tos/orange_fr_fttp
    how-tos/pac