What is the difference between stateful and stateless firewalls in AWS?

Question

Prajna G · Accepted Answer

In AWS, a stateful firewall, such as AWS Network ACLs, tracks and maintains the state of active connections, automatically allowing return traffic for established connections. In contrast, a stateless firewall, such as AWS Security Groups, does not track connection states and requires explicit rules for both inbound and outbound traffic, with rules applied independently.

What is the difference between stateful and stateless firewalls in AWS?

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