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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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Configuring the Report of Port Attack Defense Events

Configuring the Report of Port Attack Defense Events

Context

If a port undergoes a DoS attack, the malicious attack packets sent from this port to the CPU occupy bandwidth. As a result, the CPU cannot process the protocol packets sent from other ports, and services are interrupted. In this situation, you can enable the report of port attack defense events. When the rate of protocol packets on a port exceeds the check threshold, the switch reports an event to notify the network administrator, so that the administrator can promptly take measures to protect the switch.

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 enable

    Port attack defense is enabled.

    By default, the port attack defense function is enabled.

  4. Configure the report of port attack defense events.
    1. Run auto-port-defend alarm enable

      The report of port attack defense events is enabled.

      By default, port attack defense events are not reported.

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

      The rate threshold for port attack defense is set.

      The following table lists the default rate thresholds for different protocols in port attack defense.

      Packet Type

      Rate Threshold

      arp-request

      The default value for an LPU is 60 pps, and the default value for a main control unit varies depending on the model of the main control unit:

      • S7700: 30 pps for SRUA, SRUB, and MCUA; 120 pps for SRUH and SRUE
      • S9700: 30 pps for MCUA; 60 pps for SRUC and SRUD
      arp-reply

      The default value for an LPU is 60 pps, and the default value for a main control unit varies depending on the model of the main control unit:

      • S7700: 30 pps for SRUA, SRUB, and MCUA; 120 pps for SRUH and SRUE
      • S9700: 30 pps for MCUA; 60 pps for SRUC and SRUD
      dhcp

      The default value for an LPU is 60 pps, and the default value for a main control unit varies depending on the model of the main control unit:

      • S7700: 30 pps for SRUA, SRUB, and MCUA; 120 pps for SRUH and SRUE
      • S9700: 30 pps for MCUA; 60 pps for SRUC and SRUD
      icmp

      The default value for an LPU is 60 pps, and the default value for a main control unit varies depending on the model of the main control unit:

      • S7700: 60 pps for SRUA, SRUB, and MCUA; 120 pps for SRUH and SRUE
      • S9700: 60 pps
      igmp

      The default value for an LPU is 60 pps, and the default value for a main control unit varies depending on the model of the main control unit:

      • S7700: 60 pps for SRUA, SRUB, and MCUA; 120 pps for SRUH and SRUE
      • S9700: 60 pps
      ip-fragment

      30 pps

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Updated: 2019-09-23

Document ID: EDOC1000178319

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