What should be added to an access list for an out of band management network?

In the context of securing an out-of-band management network, it is essential to allow only specific management workstations access to ensure that only authorized users can manage network devices. This access control helps in safeguarding the network from unauthorized access and potential security breaches.

By permitting specific management workstations, you can maintain tighter control over who can access the management interfaces of network devices. This practice effectively limits exposure to only trusted sources, thus reducing the attack surface.

In contrast, while permitting all other IP traffic might seem to provide broad access, it actually opens up the network to any IP traffic, significantly increasing the risk of unwanted or malicious access. Denying all other IP traffic without specifying granted access could lock out legitimate management workstations, hindering legitimate tasks. Suggesting that it does not matter undermines the importance of a thoughtful and secure approach to network management access, which is critical in maintaining a secure infrastructure.