SSID (Service Set Identifier) is a certain order of case-sensitive alphanumeric characters that uniquely name a Wireless Local Area Network (WLAN). This name is the secret key set by the network administrator for individuals to connect to the preferred (Wi-Fi) network. It is used when various independent networks are active in the same physical area. An SSID can have a maximum of 32 characters.

All WLAN devices must use the same SSID for the users to get in touch with one another. Before a user can join a Wi-Fi network, he must first know the correct SSID. However, others may also be able to figure out the SSID through network sniffing.

A Basic Service Set (BSS) is a set of wireless devices that connect directly with each other. A number of BSSs can be linked to create a logical WLAN segment known as Extended Service Set (ESS). SSID is the name given to each ESS.

Wireless clients can set the SSID either manually or automatically. You can manually set the SSID by typing it in into the client network settings. To automatically set the SSID, leave the SSID blank or unspecified.

A network administrator frequently utilizes a public SSID, which is established on the access point and transmitted to all wireless devices in the network span. Some more recent wireless access points immobilize the automatic SSID transmission feature to enhance the security of the network.

The term ESSID (Extended Service Set Identifier) also refers to SSID. It is also sometimes referred to as the “network name.”

Security Issues

Service Set Identifier is a secret key set by the network administrator. Some management problems arise for the network administrator because of this. If the network administrator wishes to be shut out of the network, he/ she must modify the SSID of the network. Since every user in the network must configure the SSID into their system, they would all have to reconfigure the SSID on their network nodes. Some Wi-Fi Network Information Centers enable the user to configure a number of SSIDs at a time.

Disabling SSID Broadcasting

Several WAP (Wireless Access Point) manufacturers have supplemented a configuration choice which allows the user to disable SSID broadcasting. This promotes the security of the network because it is able to stop the SSID from being broadcast with Beacon frames and Probe Requests.

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