The security setting defines the type of authentication and encryption used by the router, and the level of privacy protection for data transmitted over its network.
WEP
WEP: Wired Equivalent Privacy
Uses an algorithm called RC4
Each packet is encrypted using a unique key stream
A random initialization vector (IV) with 24 bits is used to generate the key streams
IV + Key = key stream
WPA3 Personal
Wi-Fi Protected Access - Personal
It's the newest, most secure protocol currently available for Wi-Fi devices
It works with all devices that support Wi-Fi 6 (802.11ax), and some older devices
WPA2/WPA3 Transitional
It's a mixed mode that uses WPA3 Personal with devices that support that protocol, while allowing older devices to use WPA2 Personal (AES) instead.
WPA2-Personal (WPA2-PSK)
Wi-Fi Protected Access - Personal or Wi-Fi Protected Access - Pre-Shared Key
Can use encryption TKIP or AES
It's appropriate when you can't use one of the more secure modes
In that case, also choose AES as the encryption or cipher type, if available.
Unsecure security settings
WPA/WPA2 mixed modes
WPA Personal
WEP, including WEP Open, WEP Shared, WEP Transitional Security Network, or Dynamic WEP (WEP with 802.1X)
TKIP, including any security setting with TKIP in the name