Windows 7 / Networking

How Windows Publishes Network Resources

When you share a network resource, such as a folder or printer, Windows communicates using several protocols to make other computers on the network aware of the resource. To communicate with versions of Windows prior to Windows Vista, the Server service notifies the Computer Browser service when new shares are created or deleted, and the Computer Browser service sends the announcements over NetBIOS.

To announce resources to other computers running Windows Vista and Windows 7 using WS-Discovery, Windows 7 uses the Function Discovery Resource Publication (FDRP) service. Although FD is responsible for discovering shared resources on a network when the computer is acting as a client, FDRP is responsible for announcing resources when the computer is acting as a server. The primary functions are:

  • Sends a HELLO message for each registered resource on service startup.
  • Sends a HELLO message whenever a new resource is registered. Responds to network probes for resources matching one of the registered resources by type.
  • Resolves network requests for resources matching one of the registered resources by name.
  • Sends a BYE message whenever a resource is unregistered.
  • Sends a BYE message for each registered resource on service shutdown.

The HELLO message includes the following information:

  • Name
  • Description
  • Whether the computer is part of a workgroup or domain
  • Computer type, such as desktop, laptop, tablet, Media Center, or server
  • Whether Remote Desktop is enabled and allowed through Windows Firewall
  • Folder and printer shares with at least Read access for Everyone if file sharing is enabled and allowed through Windows Firewall. Specifically, administrative shares are not announced. For each share, the following information is included:
    • Path
    • If applicable, the folder type (such as documents, pictures, music, or videos)
    • The share permissions assigned to the Everyone special group

FDRP is primarily intended for home networks, where ease of use is typically a requirement and networks are unmanaged. In corporate computing environments, where there can be a large number of computers on a single subnet and the network is managed, FDRP is not recommended because the traffic might become a nuisance. By default, FDRP is enabled in a workgroup and disabled in a domain environment.

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In this tutorial:

  1. Configuring Windows Networking
  2. Usability Improvements
  3. Network And Sharing Center
  4. Network Explorer
  5. How Windows Finds Network Resources
  6. How Windows Publishes Network Resources
  7. How Windows Creates the Network Map
  8. Network Map
  9. Set Up A Connection Or Network Wizard
  10. Manageability Improvements
  11. Network Location Types
  12. Policy-Based QoS
  13. Selecting DSCP Values
  14. Planning Traffic Throttling
  15. Configuring QoS Policies
  16. Configuring System-Wide QoS Settings
  17. Configuring Advanced QoS Settings
  18. Testing QoS
  19. Windows Firewall and IPsec
  20. Windows Connect Now in Windows 7
  21. Core Networking Improvements
  22. Networking BranchCache
  23. How Hosted Cache Works
  24. How Distributed Cache Works
  25. Configuring BranchCache
  26. BranchCache Protocols
  27. File Sharing Using SMB
  28. Web Browsing with HTTP (Including HTTPS)
  29. DNSsec
  30. GreenIT
  31. Efficient Networking
  32. What Causes Latency, How to Measure It, and How to Control It
  33. TCP Receive Window Scaling
  34. Scalable Networking
  35. Improved Reliability
  36. IPv6 Support
  37. 802.1X Network Authentication
  38. Server Message Block (SMB) 2.0
  39. Strong Host Model
  40. Wireless Networking
  41. Improved APIs
  42. Network Awareness
  43. Improved Peer Networking
  44. Services Used by Peer-to-Peer Networking
  45. Managing Peer-to-Peer Networking
  46. Peer-to-Peer Name Resolution
  47. EAP Host Architecture
  48. Layered Service Provider (LSP)
  49. Windows Sockets Direct Path for System Area Networks
  50. How to Configure Wireless Settings
  51. Configuring Wireless Settings Manually
  52. Using Group Policy to Configure Wireless Settings
  53. How to Configure TCP/IP
  54. DHCP
  55. Configuring IP Addresses Manually
  56. Command Line and Scripts
  57. How to Connect to AD DS Domains
  58. How to Connect to a Domain When 802.1X Authentication Is Not Enabled
  59. How to Connect to a Domain When 802.1X Authentication Is Enabled