What is "Extensible Authentication Protocol" in my Windows Server 2008 service list? And how is "Extensible Authentication Protocol" service related to eapsvc.dll?

"Extensible Authentication Protocol" is a Windows Server 2008 service that "The Extensible Authentication Protocol (EAP) service provides network authentication in such scenarios as 802.1x wired and wireless, VPN, and Network Access Protection (NAP). EAP also provides application programming interfaces (APIs) that are used by network access clients, including wireless and VPN clients, during the authentication process. If you disable this service, this computer is prevented from accessing networks that require EAP authentication." "Extensible Authentication Protocol" service is provided by eapsvc.dll DLL file.

Detailed information on "Extensible Authentication Protocol" service:

Service name: EapHost
Display name: Extensible Authentication Protocol
Execution command: C:\Windows\System32\svchost.exe -k netsvcs
Start type: Manual
Service status: Started
Dependencies:
   Remote Procedure Call (RPC)
   CNG Key Isolation

"Extensible Authentication Protocol" service is provided by the svchost.exe program, see "svchost.exe Executable Program on Windows Server 2008" for details.

Disabling "Extensible Authentication Protocol" service may cause issues when running Windows Server 2008 system.

⇒List of Services on Windows Server 2008

⇒⇒Windows Server 2008 Tutorials