Which type of firewall creates complex rules to ensure traffic security?

The permissive firewall is designed to allow traffic through based on a set of predefined rules that prioritize user accessibility and convenience. This type of firewall creates complex rules that enable legitimate traffic while monitoring and enforcing security policies to manage potential threats. By applying these complex rules, permissive firewalls can adapt to various network conditions and user needs, reducing the likelihood of legitimate traffic being blocked while still maintaining an appropriate level of security.

In contrast, other types of firewalls operate with different philosophies. A restrictive firewall typically focuses on limiting access and only permits specific types of traffic, which can be too rigid in some scenarios. In terms of operation, a layered firewall employs multiple security layers, which can include both permissive and restrictive elements, but it may not always have complex rules specifically aimed at traffic security. A stateless firewall, on the other hand, does not analyze the state of active connections; it works based on predefined rules without the ability to track and maintain the state of traffic, which limits its ability to enforce complex security policies.