Which technology is an example of Policy Access Management (PAM)?

Policy Access Management (PAM) refers to technologies that help govern and restrict user access to systems and resources based on predefined policies. A bastion host is a server designed to withstand attacks and serve as a gateway between an internal network and external networks. It specifically controls access to different resources by enforcing security policies, thus aligning closely with the principles of policy access management. Bastion hosts allow administrators to monitor and log connections, ensuring that only authorized users can gain access to sensitive areas of the network.

In contrast, technologies like VPNs, IDS, and firewalls perform different roles. VPNs provide encrypted connections over the internet but do not inherently manage policies related to user access. Intrusion Detection Systems (IDS) monitor traffic for suspicious activities without directly managing user access policies. Firewalls enforce security by controlling incoming and outgoing traffic based on rules, but they do not provide the same level of granularity in managing user access.

Thus, a bastion host is the most fitting example of Policy Access Management because it directly focuses on controlling access through defined policies.