What is the Application Layer Gateway (ALG) service?

An explanation of the Application Layer Gateway Service (ALG) service in Windows 7.

What does the Application Layer Gateway Service (ALG) service do?

The application layer gateway service is a subcomponent of the Internet Connection Sharing (ICS) / Internet Connection Firewall (ICF) service that provides support for independent software vendors to write protocol plug-ins that allow their proprietary network protocols to pass through the firewall and work behind ICS.

Application Layer Gateway Service (ALG) service details

  1. Service name: ALG
  2. Description: Provides support for 3rd party protocol plug-ins for Internet Connection Sharing.
  3. Path to executable: C:\windows\System32\alg.exe
  4. Startup type: Manual

Does my computer need the Application Layer Gateway Service (ALG) service?

Your computer does not need the application layer gateway service. If it’s disabled, you won’t be able to share your computer’s internet connection with other computers or devices.

Should I disable the Application Layer Gateway Service (ALG) service?

First off, I have to say that it’s best to leave service optimization up to Microsoft. With that said; if you never intend to share your computer’s internet connection, disabling the ALG service will not hurt anything.

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One Response to “What is the Application Layer Gateway (ALG) service?”

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  1. Your computer does not need the application layer gateway service. If it’s disabled, you won’t First off, I have to say that it’s best to leave service optimization up to Microsoft. With that said; if you

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