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FORE Systems ES-2810 Ethernet Switch User’s Manual
Concepts in Switching
A.5 Port Filters
A.5.1 Introduction
It is possible to increase network security by using port filters. Adding a filter to a port deter-
mines where data can come from (using port numbers and MAC addresses) and go to (using
port numbers and MAC addresses) on the network. This means that you can have a high level
of network security.
A.5.2 Purpose
The Port/MAC Filter facility lets you:
• Specify which ports the MAC address can be learned on
• Specify which ports the MAC address can send packets to
• Specify which ports can receive Multicast packets
• Send packets from one port to other specified ports
• Change the information on an existing port or MAC address
• Delete filtering on an existing port or MAC address
• Enable or disable the filtering system
• Scan the specifications you have made to detect any trivial errors
A.5.3 Conflicts with Other Settings
When you add or make changes to Port/MAC filter settings, it is possible it may conflict with
VLANs or permanent MAC address settings in other windows of the switch. To reduce the
danger of altering the switch configuration by mistake, certain priorities have been made.
These are listed in “Port Filter Priorities” on page A-15.
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