Windows XP 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 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

Windows 7 Starter                           Manual

Windows 7 Home Basic                                 Manual

Windows 7 Home Premium         Manual

Windows 7 Professional                Manual

Windows 7 Ultimate                       Manual

Windows 7 Enterprise                    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)