ZyXEL Communications ZyXEL Dimension ES-2108 - Manual (Page 121)

ES-2108 Series User’s Guide
Chapter 17 Port Security 121
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H A P T E R
17
Port Security
This chapter shows you how to set up port security.
17.1 Port Security Overview
Port security allows only packets with dynamically learned MAC addresses and/or configured
static MAC addresses to pass through a port on the switch. See
Chapter 9 on page 95 for
information on configuring static MAC address forwarding.
For maximum port security, enable this feature, disable MAC address learning and configure
static MAC address(es) for a port.
Functionally the switch allows for three possible outcomes with port security. You can
configure the ports to:
• Forward all packets and learn all MAC addresses.
• Drop all packets from unknown MAC addresses and do not learn MAC addresses.
• Drop all packets from unknown MAC addresses and learn a limited number of MAC
addresses.
Note: The ES-2108 Series supports five possible configurations for port security. See
Section 17.3 on page 123 for supported configurations and an example.
17.2 Port Security Setup
Click Advanced Application, Port Security in the navigation panel to display the screen as
shown.