Filtering Information for LAN Manager (NetBEUI) Traffic (97810)
The information in this article applies to:
- Microsoft LAN Manager 2.0
- Microsoft LAN Manager 2.1
- Microsoft LAN Manager 2.1a
- Microsoft LAN Manager 2.2
This article was previously published under Q97810 SUMMARY
This article provides LAN Manager (NetBEUI) packet information you
can use to filter network traffic. For instance, if you want to
filter NetBEUI network traffic from the rest of your wide area
network, you can do so by entering this information into your
network bridges.
The information you need is usually in the form of a four-digit packet
type and is dependent on the transport protocol in use. NetBEUI
protocol uses 802.3 frames, which do not contain an Ethertype (this
field is the length field instead). However, if the bridges can filter
on SAPs, they can filter for SAP F0 (NetBIOS).
NetBEUI always uses F0 as the 802.3 LLC DSAP and SSAP. Other protocols
use a different DSAP and SSAP (TPC LLC SNAP header DSAP/SSAP = AA,
3Com XNS=80, Novell=E0, and so on).
| Modification Type: | Major | Last Reviewed: | 9/30/2003 |
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| Keywords: | KB97810 |
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