Detecting Internal SSID
=======================

SSIDs are differentiated in the list from **Internal** to **Neighboring APs**.

Show Internal SSIDs
-------------------

#. Go to **Management > WLAN** in the top panel.
#. Find and click column labeled **Internal** in the main WLANs window. All
   internal APs will be identified with a checkmark in this column.

How to Find an Internal AP
--------------------------

The AP detected by the Genian |product_name| Agent and the wireless sensor can be
distinguished as an internally connected AP by several criteria. The Internal
AP detection method is as follows:

**MAC Similarity Check**

.. image:: /images/similarity.jpg
   :width: 600px

#. The network sensor collects the wired interface MAC information of the
   internally connected AP.
#. The wireless sensor collects the AP's wireless interface MAC information and
   sends it to the policy server.
#. Policy server compares the AP's wired and wireless interface MAC information
   and if they are similar, it determines that the access point is internal.

**Packet broadcasting**

.. image:: /images/packet.jpg
   :width: 600px

#. The network sensor broadcasts a virtual MAC to the network.
#. At this time, AP connected to the internal network broadcasts the virtual
   MAC received from the network sensor to the AP's wireless band.
#. The wireless sensor is monitoring the wireless network and when the wireless
   sensor receives the virtual MAC from the AP, it judges the AP as the
   internal AP.

**Agent**

#. The Agent collects all network interface information on user device.
#. This information is checked for matches against known network interface MAC
   addresses.

**SNMP with wireless controller**

#. Information is collected from wireless controller using SNMP.
#. This information is checked for matches against known MAC addresses from the
   wireless controller.