Which firewall should Keep Alive be enabled on for optimal performance?

Enabling Keep Alive on the firewall with the least processing overhead is advantageous for optimal performance. Keep Alive is a mechanism that helps maintain connections by periodically sending messages through the firewall, which helps to prevent timeouts on idle connections.

When it is enabled on a firewall with the least processing overhead, it minimizes the resource consumption and performance impact on devices under less load. This means that the firewall can efficiently manage its resources, enabling it to handle more connections without significant performance degradation.

In scenarios where a firewall is already experiencing high processing overhead, adding the Keep Alive functionality may exacerbate performance issues, as it could lead to additional strain on the system. Thus, the best practice is to configure this feature on the least burdened firewall to ensure it operates smoothly while adequately managing connections.