What port number does a Message Relay use?

The Message Relay uses port 8190, which is designated for the communication between Sophos products for tasks such as updating endpoints and managing communications within the network. This port is specifically allocated for these functions to ensure that data can be transmitted securely and efficiently among devices running Sophos software.

Port 8190 is important because it helps facilitate the relay of messages and updates, maintaining the integrity and security of the communication within the network. The use of a clearly defined port allows for better management of network traffic and improves the overall performance of the system.

In contrast, the other ports listed—8080, 80, and 443—are commonly associated with web traffic. Port 80 is typically used for standard HTTP traffic, while 443 is reserved for secure HTTPS connections. Port 8080 is often used for alternative web traffic but is not associated with the specific function of the Message Relay within the Sophos ecosystem. This distinction highlights why port 8190 is the correct answer for the use case outlined in the question.