Which port is commonly used for the PVWA/CPM communication?

The correct choice of TCP/443 as the port commonly used for the PVWA (Password Vault Web Access) and CPM (Central Policy Manager) communication is significant because this port is standard for secure web traffic. TCP/443 is utilized by HTTPS, which ensures that the communication between clients and servers is encrypted for security and integrity.

In the context of CyberArk, this secure communication is essential as sensitive credential management and access control operations occur between the PVWA, where users interact through web applications, and the CPM, which manages the rotation of passwords securely. The use of HTTPS on TCP/443 not only protects data in transit from potential eavesdropping or tampering but also aligns with best practices regarding security in enterprise environments.

Other ports mentioned are not suitable for this kind of communication due to either their purpose or lack of encryption. TCP/80 is typically used for unencrypted web traffic, TCP/22 is associated with SSH (Secure Shell), typically for secure shell access rather than web communication, and TCP/8080 is often used for proxy servers or alternate HTTP traffic but does not provide the same level of security as TCP/443.