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SSID
Last modified: Tuesday, January 15, 2008 

Short for service set identifier, a 32-character unique identifier attached to the header of packets sent over a WLAN that acts as a password when a mobile device tries to connect to the BSS. The SSID differentiates one WLAN from another, so all access points and all devices attempting to connect to a specific WLAN must use the same SSID. A device will not be permitted to join the BSS unless it can provide the unique SSID. Because an SSID can be sniffed in plain text from a packet it does not supply any security to the network.

An SSID is also referred to as a network name because essentially it is a name that identifies a wireless network.

  Related Links

Getting Phished: Why SSID Spoofing (Still) Matters
Phony access points (APs) that use spoofed service set identifiers (SSIDs) to lure wireless users are nothing new.

Implementing Multiple SSIDs
some companies, such as Cisco and Symbol, are offering enterprise-class access points that support multiple SSIDs. Some examples of products that support multiple SSIDs are the Cisco 1100 Series access point, which can support up to 16 separate SSIDs, and the Symbol Mobius Axon Wireless Switch, which can support up to 32 separate SSIDs.

Minimizing WLAN Security Threats
Most wireless LANs do not invoke adequate security measures to guard against attacks. Learn what security threats exist for wireless LANs as the basis for deploying effective security measures.

Webopedia's "Did You Know...?" Section
Use this Webopedia knowledge section for an in-depth overview of specific technologies and occurrences in the areas of Computer Science, The Internet, and Computer Hardware and Software.

Webopedia's Quick Reference Section
Use this Webopedia reference section for information on common Internet and computer facts and occurrences.

What SSID is Right for You?
The problem with using the default SSID is that some confusion might result if a company or home owner next to you sets up a wireless LAN with the same vendor's access points.

Wi-Fi Planet
802.11 news, commentary and information.

Wi-FiHotSpotList.com
Search this directory for Wi-Fi hotspots in your region.

Wireless Privacy: An Oxymoron?
ISPs deploying 802.11b for public broadband or fixed wireless Internet access should consider the risks associated with this emerging technology before network security is compromised.

Related Categories

Mobile Computing

Wireless Computing

Related Terms

802.11

Access Point

AP

device

header

packet

sniffer

wireless

WLAN

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