What is the default mode of communication for DSM with other appliances?

The default mode of communication for the Deep Security Manager (DSM) with other appliances uses DNS hostnames. This approach is beneficial because it allows for more flexibility in network configurations. By utilizing DNS, the system can easily adapt to changes such as migrating appliances to different IP addresses without needing to reconfigure every instance that communicates with the DSM.

Using DNS hostnames instead of fixed IP addresses or MAC addresses facilitates more manageable network communication and enhances the ability for appliances to communicate across a variety of environments, whether they are on the same local network or spread across multiple networks. This configuration makes it easier to identify and manage devices as names are more human-readable and understandable than numerical IP addresses or hardware-based MAC addresses.

In contrast, fixed IP addresses provide less flexibility for devices that may change networks. Dynamic IP addresses could be viable for communication, but they would not be the default mode, as they can lead to instability if the IP changes frequently in a dynamic environment. Lastly, while MAC addresses identify devices on a local network level, they are not used for logical communication between different appliances. Overall, using DNS hostnames promotes a more scalable and easier-to-manage system.