Application-Layer Gateway (ALG) - Definition or Meaning

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Application-Layer Gateway (ALG)

Author:

Marc Ferguson

Published:

15/05/2024

Updated:

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Definition of “Application-Layer Gateway (ALG)” :

“Application-Layer Gateway (ALG) is a security component that enhances the functionality of a firewall by managing specific application protocols such as FTP and SIP. It allows customized NAT traversal filters to be plugged into the gateway to support address and port translation for certain application layer protocols.”

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