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CLI-based Configuration Guide - Security

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010

This document provides the basic concepts, configuration procedures, and configuration examples in different application scenarios of the network management feature supported by the device.
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Application Scenarios for Port Security

Application Scenarios for Port Security

Port security usually applies to the following scenarios:

  • The access device configured with port security can defend against attacks initiated by an unauthorized user using another interface.
  • The aggregation device configured with port security can limit the number of access users.

Configuring Port Security at the Access Layer

As shown in Figure 12-1, PC1 and PC3 connect to RouterA using IP phones, and PC2 directly connects to RouterA. To ensure access device security and defend against attacks from unauthorized users, configure port security on the interface of RouterA.

Figure 12-1  Configuring port security at the access layer
NOTE:
  • If access users frequently change the locations, you can configure port security to convert dynamic MAC addresses into dynamic secure MAC addresses. This function ensures that bound MAC address entries are deleted immediately when users change the locations.
  • If access users seldom change the locations, you can configure port security to convert dynamic MAC addresses into sticky MAC addresses. This function ensures that bound MAC address entries are not lost after a device reset.

Configuring Port Security at the Aggregation Layer

As shown in Figure 12-2, multiple PCs communicate with the switch through RouterA on a tree network. To ensure aggregation device security and limit the number of access users, configure port security on the aggregation device Router and set the maximum number of secure MAC addresses.

Figure 12-2  Configuring port security at the aggregation layer
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Updated: 2019-05-20

Document ID: EDOC1100034077

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