www.BlackViper.com: Windows 7 Services 411 - Wired AutoConfig

Wired AutoConfig

Default Description:

The Wired AutoConfig (DOT3SVC) service is responsible for performing IEEE 802.1X authentication on Ethernet interfaces. If your current wired network deployment enforces 802.1X authentication, the DOT3SVC service should be configured to run for establishing Layer 2 connectivity and/or providing access to network resources. Wired networks that do not enforce 802.1X authentication are unaffected by the DOT3SVC service.

Additional Information:

I include this service in the following group of services:

• CNG Key Isolation
• Extensible Authentication Protocol
• Wired AutoConfig (not required for Wireless Networks)
• WLAN AutoConfig

WLAN AutoConfig, if set to Manual, will not start automatically if you use a hardware switch (such as those on laptops to turn on and off the wireless network card). If you require wireless connectivity on your computer, keep the listed services above on the default values as well as place WLAN AutoConfig into Automatic. If you do not have a wireless card installed on the system, or do not require authentication on your wired network card, the group of services can safely be disabled.

Additional Reading:

• CNG: http://msdn2.microsoft.com/en-us/library/bb204775(VS.85).aspx
• EAP: http://en.wikipedia.org/wiki/Extensible_Authentication_Protocol
• IEEE 802.11: http://en.wikipedia.org/wiki/IEEE_802.11
• IEEE 802.1X Authentication: http://en.wikipedia.org/wiki/802.1x
• VPN: http://en.wikipedia.org/wiki/Virtual_private_network

Discussion Topic Link:

Windows 7 Services Forum

Defaults Startup Type:

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

Other Settings:

Safe Setting: Manual

Service Names:

Service Name (registry): dot3svc

Display Name: Wired AutoConfig

Default Path and Command Line Options:

C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted

Log On As:

Account: Local System account

Dependencies:

What service Wired AutoConfig needs to function properly:

• Extensible Authentication Protocol (S, HB, HP, P, U, E)
  • CNG Key Isolation (S, HB, HP, P, U, E)
    • Remote Procedure Call (RPC) (S, HB, HP, P, U, E)
      • DCOM Server Process Launcher (S, HB, HP, P, U, E)
      • RPC Endpoint Mapper (S, HB, HP, P, U, E)
  • Remote Procedure Call (RPC) (S, HB, HP, P, U, E)
    • DCOM Server Process Launcher (S, HB, HP, P, U, E)
    • RPC Endpoint Mapper (S, HB, HP, P, U, E)
• NDIS Usermode I/O Protocol (S, HB, HP, P, U, E)
• Remote Procedure Call (RPC) (S, HB, HP, P, U, E)
  • DCOM Server Process Launcher (S, HB, HP, P, U, E)
  • RPC Endpoint Mapper (S, HB, HP, P, U, E)

What other service require Wired AutoConfig to function properly:

• None (S, HB, HP, P, U, E)

Registry Settings (.reg):

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\dot3svc]
"DisplayName"="@%systemroot%\\system32\\dot3svc.dll,-1102"
"Group"="TDI"
"ImagePath"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\
74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,\
00,76,00,63,00,68,00,6f,00,73,00,74,00,2e,00,65,00,78,00,65,00,20,00,2d,00,\
6b,00,20,00,4c,00,6f,00,63,00,61,00,6c,00,53,00,79,00,73,00,74,00,65,00,6d,\
00,4e,00,65,00,74,00,77,00,6f,00,72,00,6b,00,52,00,65,00,73,00,74,00,72,00,\
69,00,63,00,74,00,65,00,64,00,00,00
"Description"="@%systemroot%\\system32\\dot3svc.dll,-1103"
"ObjectName"="localSystem"
"ErrorControl"=dword:00000001
"Start"=dword:00000003
"Type"=dword:00000020
"DependOnService"=hex(7):52,00,70,00,63,00,53,00,73,00,00,00,4e,00,64,00,69,00,\
73,00,75,00,69,00,6f,00,00,00,45,00,61,00,70,00,68,00,6f,00,73,00,74,00,00,\
00,00,00
"ServiceSidType"=dword:00000001
"RequiredPrivileges"=hex(7):53,00,65,00,43,00,68,00,61,00,6e,00,67,00,65,00,4e,\
00,6f,00,74,00,69,00,66,00,79,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,\
67,00,65,00,00,00,53,00,65,00,49,00,6d,00,70,00,65,00,72,00,73,00,6f,00,6e,\
00,61,00,74,00,65,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,\
00,00,53,00,65,00,41,00,75,00,64,00,69,00,74,00,50,00,72,00,69,00,76,00,69,\
00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,54,00,63,00,62,00,50,00,72,00,\
69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,00,00
"FailureActions"=hex:84,03,00,00,00,00,00,00,00,00,00,00,03,00,00,00,14,00,00,\
00,01,00,00,00,c0,d4,01,00,01,00,00,00,e0,93,04,00,00,00,00,00,00,00,00,00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\dot3svc\Parameters]
"ServiceDll"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,\
00,74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,\
64,00,6f,00,74,00,33,00,73,00,76,00,63,00,2e,00,64,00,6c,00,6c,00,00,00
"ServiceDllUnloadOnStop"=dword:00000001
"ServiceMain"="Dot3SvcMain"