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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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(Optional) Configuring the Whitelist for Port Attack Defense

(Optional) Configuring the Whitelist for Port Attack Defense


By default, a device calculates the rates of protocol packets received by all interfaces, and traces the source as well as limits the rate of attack packets. Sometimes, network-side interfaces need to receive a lot of valid protocol packets. You should add these interfaces or network nodes that connect to these interfaces to the whitelist. The device does not trace the source or limit the rate of protocol packets received by the interfaces in the whitelist.


  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 whitelist whitelist-number { acl acl-number | interface interface-type interface-number }

    The whitelist is configured.

    A maximum of 32 whitelists can be configured on the device.

    The ACL referenced by a whitelist can be a basic ACL, an advanced ACL, or a Layer 2 ACL. For details about ACL configuration, see ACL Configuration.

    By default, no whitelist is configured for port attack defense. After a port is configured as a DHCP trusted port using the dhcp snooping trusted command, the device automatically delivers whitelist matching rules regardless of whether the port attack defense function is enabled. A maximum of 16 rules based on source IP addresses and interfaces can be delivered. The device will not perform port attack defense actions on the DHCP packets received on interfaces.


    All the packets matching an ACL referenced by a whitelist are considered to be valid packets regardless of whether the ACL rule is permit or deny.

    If an ACL has no rule, the whitelist that references the ACL does not take effect.

Updated: 2019-09-23

Document ID: EDOC1000178319

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