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Configuration Guide - Security

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of Security, including ACL, local attack defense, MFF, attack defense, traffic suppression and storm control, ARP security, Port security, DHCP snooping, ND snooping, PPPoE+, IPSG, SAVI, separating the management plane from the service plane, security risks.
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Configuring the Alarm Function for Potential ARP Attacks

Configuring the Alarm Function for Potential ARP Attacks

Context

After rate limiting on ARP packets or ARP Miss messages is enabled, the device discards the excess ARP packets or ARP Miss messages if the number of ARP packets or ARP Miss messages the device receives in a specified period exceeds the limit. The device considers the excess ARP packets or ARP Miss messages as potential attacks. The device records ARP logs and sends ARP alarms indicating potential attacks to the NMS.

To avoid excessive alarms and logs when ARP attacks occur, reduce the alarm and log quantities by setting a proper interval for sending alarms and recording logs.

Procedure

  1. Run the system-view command to enter the system view.
  2. Run the arp anti-attack log-trap-timer time command to set the interval for recording ARP logs and sending ARP alarms.

    The default interval for recording ARP logs and sending alarms is 0, indicating that the device does not record ARP logs or send ARP alarms.

  3. Run the commit command to commit the configuration.
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Updated: 2019-04-20

Document ID: EDOC1100074765

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