Which protocol is known for replacing WEP in WPA?

The protocol known for replacing WEP (Wired Equivalent Privacy) in WPA (Wi-Fi Protected Access) is TKIP (Temporal Key Integrity Protocol). TKIP was introduced as part of WPA to address the security vulnerabilities inherent in WEP.

TKIP improves security by dynamically generating a new key for each packet of data transmitted, which greatly enhances protection against key reuse attacks and other vulnerabilities that were prevalent with WEP's static keys. Additionally, TKIP includes message integrity checks to prevent packet tampering, thereby strengthening overall security for wireless networks.

In contrast, AES (Advanced Encryption Standard) is a more advanced encryption protocol that is part of WPA2. Although it provides much better security than TKIP, it was not the protocol that initially replaced WEP in WPA. The other options, SSL (Secure Sockets Layer) and IPsec (Internet Protocol Security), serve different purposes unrelated to the replaceable nature of WEP in WPA, focusing instead on securing communication over networks and securing Internet Protocol communications, respectively.