For optimal security on network devices, which protocol should be enabled if not already?

WPA2 is the recommended protocol for optimal security on network devices, particularly for wireless networks. It is an advancement over its predecessor, WPA, offering stronger encryption due to its use of the Advanced Encryption Standard (AES), which is more secure than the algorithms used in WEP (Wired Equivalent Privacy) and WPA.

WEP is often considered outdated and insecure due to various vulnerabilities that allow unauthorized access to the network. WPA, while more secure than WEP, still does not match the level of protection provided by WPA2.

Enabling WPA2 helps ensure that data transmitted over the network is encrypted and provides better protection against various types of attacks, such as eavesdropping and unauthorized access. Therefore, using WPA2 is a critical step in maintaining a secure wireless environment.