WLAN stands for “Wireless Local Area Network,” a wireless local network, and refers to a local wireless network that connects devices such as smartphones, tablets, or laptops wirelessly to the internet or network resources. It enables access to the internet without physical cable connections.
Wireless WLAN networks use electromagnetic waves in the microwave range to transmit data between a router and connected devices. Communication occurs over frequency bands, primarily at 2.4 GHz or 5 GHz. The router receives the internet signal via a telephone or internet connection and forwards it wirelessly to the connected devices. Data is also transmitted in reverse from the device to the router and then forwarded to the internet.
Although the term Wi-Fi is often used synonymously, it is actually a brand name that has entered common English usage: Wi-Fi is a trademark of the Wi-Fi Alliance. Wi-Fi is therefore a specific implementation of WLAN that guarantees device compatibility.
Public WLAN networks, such as those in buses and trains, offer convenience but pose security risks. Data can be intercepted by unauthorized parties. To prevent this, users should use VPNs (Virtual Private Networks) to encrypt their data traffic and avoid sensitive activities such as online banking.
