The Port Forwarding Host Name Resource Cannot Be Accessed in the Windows OS

Publication Date:  2012-07-19 Views:  96 Downloads:  0
Issue Description
The port forwarding host name resource cannot be accessed in the Windows Vista or Windows 7 OS. For example, when the remote desktop is used, the connection that is established through the host name fails.
Alarm Information
None.
Handling Process
  1. Choose Start > Run in the Windows Vista or Windows 7 OS. Then enter cmd.
  2. Enter route add 0.0.0.0 0.0.0.0 x.x.x.x in the command line window to add a default route.

     

     NOTE:
    Field x.x.x.x indicates the next-hop IP address.

     

Root Cause
When the port forwarding host name resource is accessed in the Windows Vista or Windows 7 OS, the following process is involved:
  1. The intranet DNS server obtains the IP address by resolving the host name resource.
  2. The Windows Vista or Windows 7 OS searches the routing table for the route according to the IP address.
  3. The Windows Vista or Windows 7 OS requests to establish a TCP connection with the intranet resource after obtaining the route.

If the Windows Vista or Windows 7 OS cannot find the route to the intranet resource, the OS does not request to establish a TCP connection with the intranet resource. As a result, the user cannot access the intranet resource.

The OS usually provides a default route. In this case, the previous problem does not exist.

The Windows XP OS does not have to search the routing table, and thus the previous problem does not exist.

Suggestions
None.

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