Qus:    What is stateful and Stateless firewall?
Jul 19, 2021 14:19 1 Answers Views: 475 JOSEPH
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Answers (1)
HARSHA Jul 21, 2021 12:29
Answer:   Stateful Firewall: A Security group is a virtual stateful firewall that controls inbound and outbound network traffic to AWS resources and Amazon EC2 instances. Operates at the instance level. It supports allow rules only. Return traffic is automatically allowed, regardless of any rules.
Stateless Firewall: A Network access control List (ACL) is a virtual stateless firewall on a subnet level. Supports allow rules and deny rules. Return traffic must be explicitly allowed by rules.

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