INFO: Intermediate NDIS Drivers Not Supported Over WAN (294321)


The information in this article applies to:

  • Microsoft Windows CE Operating System, Versions 2.12
  • Microsoft Windows CE Operating System, Versions 3.0
This article was previously published under Q294321

SUMMARY

Windows CE supports intermediate network driver interface specification (NDIS) drivers only for Ethernet (802.3). Intermediate NDIS drivers over wide area networks (WANs) are not supported.

MORE INFORMATION

Intermediate NDIS drivers for WAN are currently not supported. This is because the method for sending packets over a WAN interface in Windows CE is different than the method used in Window 2000. Currently, Microsoft has chosen not to publish this interface, and as a result, it in not possible to write WAN-aware protocols in Windows CE. Additionally, because an intermediate driver is both a protocol driver and a miniport driver, it is not possible to write a WAN intermediate driver either.

A possible workaround for intercepting WAN traffic over a serial link would be to intercept the packets in the serial driver. Source code for serial drivers is available in the Platform Builder Toolkit.

REFERENCES

ndis wan protocol
Modification Type:MinorLast Reviewed:12/27/2003
Keywords:kbinfo KB294321
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