Configuring Layer-2 Secure Port Filters; Monitor Layer-2 Security Filters - Cabletron Systems SmartSwitch 8-slot User's Reference Manual

Configuring Layer-2 Secure Port Filters

Secure port filters block access to a specified port. You can use a secure port filter by
itself to secure unused ports. Secure port filters can be configured as source or
destination port filters. A secure port filter applied to a source port forces all incoming
packets to be dropped on a port. A secure port filter applied to a destination port
prevents packets from going out a certain port.
You can combine secure port filters with static entries in the following ways:
• Combine a source secure port filter with a source static entry to drop all received
traffic but allow any frame coming from specific source MAC address to go through
• Combine a source secure port filter with a flow static entry to drop all received traffic
but allow any frame coming from a specific source MAC address that is destined to
specific destination MAC address to go through
• Combine a destination secure port with a destination static entry to drop all received
traffic but allow any frame destined to specific destination MAC address go through
• Combine a destination secure port filter with a flow static entry to drop all received
traffic but allow any frame coming from specific source MAC address that is des-
tined to specific destination MAC address to go through
To configure Layer-2 secure port filters, enter the following commands in Configure
mode:
Configure a source secure port filter.
Configure a destination secure port fil-
ter.

Monitor Layer-2 Security Filters

The SSR provides display of Layer-2 security filter configurations contained in the
routing table.
SSR User Reference Manual
Chapter 9: Security Configuration Guide
filters add secure-port name <name>
direction source vlan <VLAN-num> in-port-
list <port-list>
filters add secure-port name <name>
direction destination vlan <VLAN-num> in-
port-list <port-list>
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