Windows 7 / Networking

Protocols and Features of VPN Reconnect

VPN Reconnect works by using the following protocols:

  • IPsec tunnel mode using Encapsulating Security Payload (ESP) for secure transmission
  • IKEv2 for key negotiation and MOBIKE for switching the tunnel endpoints when interfaces change

On the server side, VPN Reconnect is implemented within the Routing and Remote Access service (RRAS) mainly by the addition of two new features:

  • A new Kernel Mode miniport driver for creating IKEv2 tunnels
  • A new VPN IKE Protocol Engine that plugs into the Remote Access Connection Manager service (Rasman)

On the client side, Rasman loads the VPN IKE Protocol Engine, which controls IKEv2 protocol negotiation and provides interfaces for IPsec for authentication and IP parameter configuration. A new Network Driver Interface Specification (NDIS) miniport driver called the VPN Reconnect driver then performs the necessary encapsulation for IKEv2-based tunnels.

In addition, a feature called Mobility Manager is involved in making VPN Reconnect possible. Mobility Manager provides support for the switching of mobility-enabled VPN connections when the underlying interface fails. Mobility Manager is implemented as a scheduled task having LocalService privileges. This task gets triggered when the first mobilityenabled IKEv2 tunnel is established, and it continues running until there is no longer any mobility-enabled IKEv2 tunnels present on the system.

IKEv2 tunnels support two types of client-side authentication:

  • Using EAP to enable authentication based on the user's credentials
  • Using a machine certificate that has been installed on the VPN server

For more information on how IKEv2 tunnels are authenticated, see the sidebar titled "Direct from the Source: IKEv2 Authentication" later in this tutorial.

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In this tutorial:

  1. Connecting Remote Users and Networks
  2. Enhancements for Connecting Remote Users and Networks in Windows 7
  3. Understanding IKEv2
  4. Understanding MOBIKE
  5. Understanding VPN Reconnect
  6. Protocols and Features of VPN Reconnect
  7. How VPN Reconnect Works
  8. Understanding DirectAccess
  9. Benefits of DirectAccess
  10. How DirectAccess Works
  11. Windows 7 and Windows Server 2008 R2
  12. Ipv6
  13. IPsec
  14. Perimeter Firewall Exceptions
  15. Implementing DirectAccess
  16. Understanding BranchCache
  17. Benefits of BranchCache
  18. How BranchCache Works
  19. Protocols Supported by BranchCache
  20. Implementing BranchCache
  21. Supported Connection Types
  22. Outgoing Connection Types
  23. Incoming Connection Types
  24. Deprecated Connection Types
  25. Supported Tunneling Protocols
  26. Comparing the Different Tunneling Protocols
  27. Understanding Cryptographic Enhancements
  28. Support for AES
  29. Weak Cryptography Removal from PP TP/L2TP
  30. Supported Authentication Protocols
  31. Understanding the VPN Connection Negotiation Process
  32. Creating and Configuring VPN Connection
  33. Creating a VPN Connection
  34. Initiating a Connection
  35. Terminating a Connection
  36. Viewing Connection Details
  37. Configuring a VPN Connection
  38. Configuring Security Settings for a VPN Connection
  39. Configuring the Tunneling Protocol (s) Used
  40. Configuring Advanced Connection Settings
  41. Configuring the Data Encryption Level
  42. Configuring the Authentication Method Used
  43. Configuring Authentication for IKEv2 connections
  44. Configuring Mobility for IKEv2 Connections
  45. Configuring Dial-Up Connections
  46. Creating a Dial-Up Connection
  47. Advanced Connection Settings
  48. Configuring Incoming Connections
  49. Managing Connections Using Group Policy
  50. Using Remote Desktop
  51. Understanding Remote Desktop
  52. Versions of RDP
  53. RDP 6.1 Features and Enhancements
  54. RDP 7.0 new features and enhancements
  55. RemoteApp and Desktop Connection
  56. Understanding RDC
  57. Understanding Remote Desktop Services Terminology
  58. Configuring and Using Remote Desktop
  59. Enabling Remote Desktop and Authorizing Users on a Single Computer
  60. Enabling Remote Desktop Using Group Policy
  61. Configuring and Deploying Remote Desktop Connection
  62. Configuring Remote Desktop Connection from the Command Line
  63. Configuring Remote Desktop Connection Using Notepad
  64. Configuring Remote Desktop Using Group Policy
  65. Establishing a Remote Desktop Session
  66. Improving Remote Desktop Performance
  67. Troubleshooting Remote Desktop Sessions
  68. Configuring and Using RemoteApp and Desktop Connection