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Library/Backend/Cloud & AWS
Medium Pro#aws-cloud

Phân biệt Security Groups và Network ACLs (NACLs) trong AWS. Khi nào nên dùng loại nào?

February 15, 2026

Quick summary

A Security Group (SG) is a stateful firewall operating at the instance level (ENI) that supports Allow rules only. A Network ACL (NACL) is a stateless firewall operating at the subnet level that supports both Allow/Deny rules and processes them in numerical order.

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