User's Manual

Tsunami MP.11 2454-R, 5054-R, and 5054-R-LR Installation and Management
Chapter 5. Using the Web Interface 75
8) Configure Packet Filtering
Click the Configure button and the Filtering tab to configure packet filtering. Packet filtering can be used to
control and optimize network performance. Filtering sub-tabs are as follows:
The Filtering feature can selectively filter specific packets based upon their Ethernet protocol type. Protocol
filtering is done at the Bridge layer.
Protocol filters are useful for preventing bridging of selected protocol traffic from one segment of a network to
other segments (or subnets). You can use this feature both to increase the amount of bandwidth available on
your network and to increase network security.
Increasing Available Bandwidth
It may be unnecessary to bridge traffic from a subnet using IPX/SPX or AppleTalk to a segment of the network
with UNIX workstations. By denying the IPX/SPX AppleTalk traffic from being bridged to the UNIX subnet, the
UNIX subnet is free of this unnecessary traffic.
Increasing Network Security
By bridging IP and IP/ARP traffic and blocking LAN protocols used by Windows, Novell, and Macintosh servers,
you can protect servers and client systems on the private local LAN from outside attacks that use those LAN
protocols. This type of filtering also prevents private LAN data from being bridged to an untrusted remote network
or the Internet.
To prevent blocking your own access to (administrator) the MP.11, Proxim recommends that IP (0x0800) and
ARP (0x0806) protocols are always passed through.