On the USG series firewall, what is the security level assigned to the DMZ?

In the context of a USG series firewall, the security level assigned to the DMZ (Demilitarized Zone) is typically set at 50. The DMZ is designed to provide an additional layer of security by separating the internal network from the external network and allowing limited access to external services while still restricting access to the internal network.

The security level of 50 for the DMZ indicates a moderate security stance. It is less secure than the internal network (often assigned a higher security level, like 100) but more secure than the external network, which is usually set at a lower level, such as 0. By assigning the DMZ a security level of 50, the firewall establishes a balance between enabling necessary connections for services that require exposure to external traffic (like web servers, email servers) and maintaining a degree of protection against potential threats from the outside world.

Understanding the security levels helps in strategic network design and indicates how traffic flows are managed between the DMZ, internal, and external networks. This architecture minimizes risks by controlling access and is a crucial aspect of security in network configuration.