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Configuration Guide - Security

S7700 and S9700 V200R011C10

This document describes the configurations of Security, including ACL, reflective ACL, local attack defense, MFF, attack defense, traffic suppression and storm control, ARP security, port security, DHCP snooping, ND snooping, PPPoE+, IPSG, SAVI, URPF, keychain, separating the management plane from the service plane, security risks.
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Specifying the Protocols to Which Port Attack Defense Is Applied

Specifying the Protocols to Which Port Attack Defense Is Applied

Context

By default, the device calculates the rate of all protocol packets, including ARP Request, ARP Reply, DHCP, ICMP, IGMP, and IP fragment packets, received by a port, and traces the source and limits the rate of attack packets. If the packets exceeding rate threshold contain only a few attack packets, you can cancel port attack defense for unneeded protocol types. If the device limits the rate of too many protocols, services are affected. Therefore, you need to specify the protocols to which port attack defense is applied.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run cpu-defend policy policy-name

    The attack defense policy view is displayed.

  3. Run auto-port-defend protocol { all | { arp-request | arp-reply | dhcp | icmp | igmp | ip-fragment } * }

    The protocols to which port attack defense is applied are specified.

    By default, port attack defense is applicable to ARP Request, ARP Reply, DHCP, ICMP, IGMP, and IP fragment packets.

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Updated: 2019-10-18

Document ID: EDOC1000178319

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