Application Layer Gateway Service

 

General Information

If you are not using Internet Connection Sharing (ICS) service, the Application Layer Gateway Service and Internet Connection Sharing (ICS) can be safely disabled.

Windows 10

Default Description

Provides support for 3rd party protocol plug-ins for Internet Connection Sharing

Additional Information

None at this time.

Default Startup Type

OS SP0
Windows 10 x86 Manual
Windows 10 x64 Manual
Windows 10 Pro x86 Manual
Windows 10 Pro x64 Manual
Windows 10 Education x86 Manual
Windows 10 Education x64 Manual
Windows 10 Enterprise x86 Manual
Windows 10 Enterprise x64 Manual

Service Names

Service Name (registry): ALG
Display Name: Application Layer Gateway Service

Default Path and Command Line Options

C:\Windows\System32\alg.exe

Log On As

Account: Local Service

Dependencies

What service Application Layer Gateway Service needs to function properly:

  • None (W10H, W10P, W10Edu, W10Ent)

What other service require Application Layer Gateway Service to function properly:

  • None (W10H, W10P, W10Edu, W10Ent)

Windows 8

Default Description

Provides support for 3rd party protocol plug-ins for Internet Connection Sharing.

Additional Information

None at this time.

Default Startup Type

OS SP0
Windows 8 x86 Manual
Windows 8 x64 Manual
Windows 8 Pro x86 Manual
Windows 8 Pro x64 Manual
Windows 8 Enterprise x86 Manual
Windows 8 Enterprise x64 Manual

Service Names

Service Name (registry): ALG
Display Name: Application Layer Gateway Service

Default Path and Command Line Options

C:\Windows\System32\alg.exe

Log On As

Account: Local Service

Dependencies

What service Application Layer Gateway Service needs to function properly:

  • None (W8, W8P, W8E)

What other service require Application Layer Gateway Service to function properly:

  • None (W8, W8P, W8E)

Windows 7

Default Description

Provides support for 3rd party protocol plug-ins for Internet Connection Sharing (ICS).

Additional Information

None at this time.

Default Startup Type

OS SP0 SP1
Windows 7 Starter Manual Manual
Windows 7 Home Basic Manual Manual
Windows 7 Home Premium Manual Manual
Windows 7 Professional Manual Manual
Windows 7 Ultimate Manual Manual
Windows 7 Enterprise Manual Manual

Service Names

Service Name (registry): ALG
Display Name: Application Layer Gateway Service

Default Path and Command Line Options

C:\Windows\System32\alg.exe

Log On As

Account: Local Service

Dependencies

What service Application Layer Gateway Service needs to function properly:

  • None (S, HB, HP, P, U, E)

What other service require Application Layer Gateway Service to function properly:

  • None (S, HB, HP, P, U, E)

Windows Vista

Default Description

Provides support for 3rd party protocol plug-ins for Internet Connection Sharing (ICS).

Additional Information

None at this time.

Default Startup Type

OS SP0 SP1 SP2
Vista Home Basic Manual Manual Manual
Vista Home Premium Manual Manual Manual
Vista Business Manual Manual Manual
Vista Ultimate Manual Manual Manual
Vista Enterprise ? Manual Manual

Service Names

Service Name (registry): ALG
Display Name: Application Layer Gateway Service

Default Path and Command Line Options

C:\Windows\System32\alg.exe

Log On As

Account: Local Service

Dependencies

What service Application Layer Gateway Service needs to function properly:

  • None (HB, HP, B, U)

What other service require Application Layer Gateway Service to function properly:

  • None (HB, HP, B, U)

Windows XP Pro x64

Default Description

Provides support for 3rd party protocol plug-ins for Internet Connection Sharing and the Windows Firewall.

Additional Information

Before the installation of Service Pack 2, this service was required for use with the Windows Firewall/Internet Connection Sharing (ICS) service. After the installation of Service Pack 2, it no longer is required.

Default Startup Type

OS SP0 SP1 SP2
XP Pro x64  ?  ? Manual

Service Names

Service Name (registry): ALG
Display Name: Application Layer Gateway Service

Default Path and Command Line Options

C:\WINDOWS\System32\alg.exe

Log On As

Account: NT AUTHORITY\LocalService

Dependencies

What service Application Layer Gateway Service needs to function properly:

  • None

What other service require Application Layer Gateway Service to function properly:

  • None

Windows XP

Default Description

Provides support for 3rd party protocol plug-ins for Internet Connection Sharing and the Windows Firewall.

Additional Information

Before the installation of Service Pack 2 or 3, this service was required for use with the Windows Firewall/Internet Connection Sharing (ICS) service. After the installation of Service Pack 2 or 3, it no longer is required.

Default Startup Type

OS SP0 SP1 SP2 SP3
XP Home Manual (Started) Manual (Started) Manual (Started) Manual (Started)
XP MCE 2005 Manual (Started) Manual (Started) Manual (Started) Manual (Started)
XP Pro Manual (Started) Manual (Started) Manual (Started) Manual (Started)
XP Tablet PC 2005 Manual (Started) Manual (Started) Manual (Started) Manual (Started)

Service Names

Service Name (registry): ALG
Display Name: Application Layer Gateway Service

Default Path and Command Line Options

C:\WINDOWS\System32\alg.exe

Log On As

Account: NT AUTHORITY\LocalService

Dependencies

What service Application Layer Gateway Service needs to function properly:

  • None (H, M, P, T)

What other service require Application Layer Gateway Service to function properly:

  • None (H, M, P, T)

Additional Reading

ICS: http://en.wikipedia.org/wiki/Internet_Connection_Sharing