WIRELESS OVERVIEW
Version 1.0, 04/2015. Copyright 2012 Hitron Technologies
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Version 1.0, 04/2015. Copyright 2015 Hitron Technologies
23
Hitron HT-EMN2 User’s Guide
2.3 Wireless Standards
The way in which wireless devices communicate with one another is standardized by
the Institute of Electrical and Electronics Engineers (IEEE). The IEEE standards
pertaining to wireless LANs are identified by their 802.11 designation. There are a
variety of WLAN standards, but the HT-EMN2 supports the following (in order of
adoption - old to new - and data transfer speeds - low to high):
IEEE 802.11b (2.4G)
IEEE 802.11g (2.4G)
IEEE 802.11n (2.4G/ 5G)
IEEE 802.11ac (5G only)
2.4 Service Sets and SSIDs
Each wireless network, including all the devices that comprise it, is known as a
Service Set.
NOTE: Depending on its capabilities and configuration, a single wireless access
point may control multiple Service Sets; this is often done to provide different
service or security levels to different clients.
Each Service Set is identified by a Service Set IDentifier (SSID). This is the name of
the network. Wireless clients must know the SSID in order to be able to connect to
the AP. You can configure the HT-EMN2 to broadcast the SSID (in which case, any
client who scans the airwaves can discover the SSID), or to “hide” the SSID (in which
case it is not broadcast, and only users who already know the SSID can connect).
2.5 Wireless Security
Radio is inherently an insecure medium, since it can be intercepted by anybody in the
coverage area with a radio receiver. Therefore, a variety of techniques exist to control
authentication (identifying who should be allowed to join the network) and encryption
(signal scrambling so that only authenticated users can decode the transmitted data).
The sophistication of each security method varies, as does its effectiveness. The HT-
EMN2 supports the following wireless security protocols (in order of effectiveness):
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