Which mechanism provides secure authentication for wireless networks in RouterOS?

WPA (Wi-Fi Protected Access) and its successor WPA2 are security protocols designed to provide stronger data protection and improve network access control for wireless networks. These mechanisms utilize advanced encryption methods and secure authentication processes, making them significantly more secure than older protocols.

WPA2, in particular, employs the Advanced Encryption Standard (AES), which is known for its high level of security. The authentication process in WPA and WPA2 involves the use of a pre-shared key (PSK) or the more sophisticated IEEE 802.1X, which involves using a radius server for access control. This ensures that only authorized users can connect to the network.

In contrast, other options like MAC filtering offer a basic form of access control but can easily be bypassed, while WEP is outdated and has well-known vulnerabilities that compromise its security. Open system authentication provides no security at all, allowing any device to connect without verification. Therefore, WPA/WPA2 is the most secure mechanism for authenticating users in wireless networks, making it the correct choice.