Limiting LAN Traffic to One Network Adapter

• Microsoft SNA Server for Windows NT, versions 2.0, 2.1, 2.11, and 3.0

SUMMARY

Often, systems running SNA Server have more than one network adapter. A network administrator may want to limit traffic on the LAN adapter. For example, non-DLC traffic on an adapter that is configured for the 802.2 link service.

This can be accomplished by disabling selected bindings on the network adapter that provides the upstream connection to the host system.

MORE INFORMATION

The example below assumes two network adapters, one ethernet and one Token Ring. The ethernet adapter is configured for NetBIOS over TCP/IP and the Token Ring adapter is configured for DLC, NetBEUI, IPX/SPX and NetBIOS over TCP/IP.

The objective is to limit LAN traffic on the upstream DLC connection to the host by disabling selected bindings on the Token Ring adapter. The steps necessary to perform this operation are outlined below:

1. Show Bindings for All Components in the Network Bindings Dialog Box.

2. Disable the following bindings:

         NetBIOS Interface --> WINS Client (TCP/IP) -->
         IBM Token Ring Adapter Driver --> (2) IBM Token Ring 4/16 Adapter
   

         NetBIOS Interface --> NetBEUI Protocol  -->
         IBM Token Ring Adapter Driver --> (2) IBM Token Ring 4/16 Adapter
   

         Server --> WINS Client (TCP/IP) --> IBM Token Ring Adapter Driver -->
         (2) IBM Token 4/16 Adapter
   

         Server -->  NetBEUI Protocol --> IBM Token Ring Adapter Driver -->
         (2) IBM Token Ring 4/16 Adapter
   

         Workstation --> WINS Client (TCP/IP) -->
         IBM Token Ring Adapter Driver --> (2) IBM TokenRing 4/16 Adapter
   

         Workstation --> NetBEUI Protocol -->
         IBM Token Ring Adapter Driver --> (2) IBM Token Ring 4/16 Adapter
   

         NWLink IPX/SPX Compatible Transport -->
         IBM Token Ring Adapter Driver --> (2) IBM TokenRing 4/16 Adapter
   

3. Accept changes and restart the server.