Using WPA2 encryption is the best countermeasure against sniffing attacks on a wireless network, as it encrypts the data, making it tough for attackers to read intercepted information.
You are concerned about sniffing attacks on your wireless network. Among the listed options, using WPA2 encryption offers the best countermeasure against sniffing. Sniffing attacks are a type of network intrusion where an unauthorized user attempts to intercept and monitor the data being transmitted over a network. WPA2, or Wi-Fi Protected Access 2, is a security protocol that encrypts data on Wi-Fi networks, which makes it incredibly difficult for attackers to read intercepted data. While other methods such as disabling SSID broadcasting, enabling MAC address filtering, and using a firewall can provide additional layers of security, encryption remains the most effective way to protect data on a network. Therefore, WPA2 encryption is the recommended implementation to counteract sniffing attacks.