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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 an Attack Source Tracing Mode

Configuring an Attack Source Tracing Mode

Context

After attack source tracing is enabled, you need to set a mode in which the device traces attack sources. The device supports the following attack source tracing modes:
  • Source IP address-based tracing: prevents Layer 3 attack packets.
  • Source MAC address-based tracing: prevents Layer 2 attack packets with a fixed source MAC address.
  • Tracing based on a combination of source port and VLAN: prevents Layer 2 attack packets with different source MAC addresses.

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-defend enable

    Attack source tracing is enabled.

    By default, attack source tracing is enabled.

  4. Run auto-defend trace-type { source-ip | source-mac | source-portvlan } *

    The attack source tracing mode is specified.

    By default, attack source tracing is based on source IP addresses and source MAC addresses.

    NOTE:

    When the attack source tracing mode is source-ip and action is error-down, if multiple interfaces receive the attack packets with the same source IP address and the packet rate exceeds the threshold, the switch shuts down only one interface, and then checks packet rate again. If the packet rate is still higher than the threshold, the switch shuts down another interface. The switch repeats the operations until the packet rate falls below the threshold.

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Updated: 2019-04-01

Document ID: EDOC1000178319

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