The SSID (short for Service Set Identifier) is the primary name of 802.1 wireless LAN (WLAN) including home and public hotspots. Client devices use this name to identify and connect to a wireless network. For example, when connecting to a wireless network at an office or school named guestnetwork, you also see other Wifi names within range. All the names you see are the SSID for those specific networks.
On the home Wi-Fi network, the router or broadband modem stores SSID but allows the administrator to change it. Routers broadcast this name to help wireless clients find networks.
What is SSID ?
SSID is a case-sensitive text string, up to 32 characters long, including letters and / or numbers. Router device manufacturers set default SSIDs for Wifi devices, such as Linksys, xfinitywifi, NETGEAR, dlink, etc. However, because SSID can change wireless networks, there are no default names. like this again.
How does the device use SSID ?
Wireless devices such as phones and laptops scan the network area and show a list of network names. Users can connect to a new network by selecting a network name from the list. In addition to seeing the network name, users will know whether the network is open or secured when the lock icon is visible next to the SSID.
Most wireless devices can monitor the networks that users join and prioritize network connections. In particular, users can save passwords for the device to automatically connect to that network. In other words, when connected, the device often asks if you want to save the network or automatically connect when in the network area. In addition, you can set up the connection yourself without access to the network (ie you can "connect" to the remote network so that when within range the device will log in).
Most wireless routers have the option to turn off SSID broadcast to increase Wifi security because it will require the client to know two passwords, SSIDs and network passwords. However, this is not very effective because it is easy to find the SSID from the header (header) of the data packets going through the router.
Connect to the network when the SSID broadcast has been disabled requiring users to create a profile with their name and other connection parameters.
Problems with SSID
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