Difference between Stateful and Stateless firewalls?

Question

Accepted Answer

Stateful firewalls track the state of active connections, while stateless firewalls filter packets based on predetermined rules.

Stateful firewalls maintain context about active connections, allowing them to make more informed decisions about which packets to allow or block.
Stateless firewalls filter packets based on static rules, without considering the state of the connection.
Stateful firewalls are more secure as they can inspect the contents of packets and make decisions based on the context of the connection.
Stateless firewalls are faster and more efficient as they do not need to maintain connection state information.
Example: Stateful firewalls can prevent unauthorized access by blocking packets that do not belong to an established connection, while stateless firewalls may allow such packets through if they match the predefined rules.

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