In networking, SSID stands for Service Set Identifier—the name of the Wi-Fi network that pops up whenever you search for available connections on your device. It identifies which wireless network you’re connecting to, whether at home or through a public hotspot. Usually, it’s in a readable format made up of letters, numbers, or any combination of words.
How Does an SSID Function?
Every time you turn on Wi-Fi on your phone, laptop, or tablet, it shows a list of all the SSIDs within range—each representing a different network. Every Wi-Fi network has a unique SSID to identify it, letting you know exactly which one to connect to.
The network administrator—such as the person managing your Wi-Fi router—can easily change the SSID. So, you might name your Wi-Fi network at home something fun or unique. If you don’t manually set an SSID, your router or hotspot defaults to a name, often based on the device’s model or brand, like “TP-Link_1234” or “Netgear5678.”
SSIDs and Security
An SSID isn’t just about identifying your network; it also impacts Wi-Fi security. Renaming the default SSID to something unique is generally recommended, as default names may make your network more vulnerable to unauthorized access. Changing the SSID is a quick step that adds some personalization and security.
Connecting to an SSID
To join a network, simply choose its SSID from the list of available networks. If the SSID is password-protected, you’ll need the password to connect. SSIDs are case-sensitive, so a capital letter is treated differently from a lowercase letter. Some network admins even choose to hide their SSID—often called “ghosting”—so that it doesn’t appear in the list of available networks, adding an extra layer of privacy.
In other words, SSIDs are essential for identifying and accessing networks, helping you connect to the right Wi-Fi quickly and easily.