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Alarm Handling

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the trap description, attributes, parameters, impact on the system, possible causes, procedures, and references. This document provides a complete set of traps, through which intended readers are kept of the running status of the device so as to locate faults.
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WLAN_1.3.6.1.4.1.2011.6.139.8.1.1.5 hwWlanWidsFloodAttackDetectedNotify

WLAN_1.3.6.1.4.1.2011.6.139.8.1.1.5 hwWlanWidsFloodAttackDetectedNotify

Description

WLAN/4/WIDS_DETECT_ATTACK_NOTIFY:OID [oid] Detected attack. (Monitor AP mac=[OPAQUE], Device Mac=[OPAQUE], Device channel=[INTEGER], Attack type=[INTEGER], Attack type string=[OCTET])

A flood attack was detected.

Attribute

Alarm ID Alarm Severity Alarm Type
1.3.6.1.4.1.2011.6.139.8.1.1.5 Warning environmentalAlarm(6)

Parameters

Name Meaning
OID Indicates the OID of the alarm.
Monitor AP mac Indicates the MAC address of the monitoring AP.
Device Mac Indicates the MAC address of the attacking device.
Device channel Indicates the channel of the monitoring AP.
Attack type Indicates the ID of attack type.
  • 0: Probe Request Flood Attack
  • 1: Authentication Request Flood Attack
  • 2: Deauthentication Frame Flood Attack
  • 3: Association Request Flood Attack
  • 4: Disassociation Request Flood Attack
  • 5: Reassociation Request Flood Attack
  • 6: Action Frame Flood Attack
  • 7: Null Data Frame Flood Attack
  • 8: Null Qos Frame Flood Attack
  • 9: EAPOL Start Frame Flood Attack
  • 10: EAPOL Logoff Frame Flood Attack
Attack type string Indicates the name of attack type. For details, see attacks corresponding to the attack type IDs.

Impact on the System

The device is busy processing flood attack packets, which occupies too many CPU resources.

Possible Causes

  • A flood attack was detected.

Procedure

  1. Run the display wlan ids attack-detected { all | flood | spoof | wapi-psk | weak-iv | wep-share-key | wpa-psk | wpa2-psk | mac-address mac-address } and display wlan ids attack-detected statistics commands to check information about attack devices and attack statistics, and determine whether a flood attack occurs.

    • If not, go to step 2 and modify the attack alarm threshold to prevent incorrect alarm reports.
    • If so, go to step 3 and configure the dynamic blacklist function.

  2. Configure the attack alarm threshold.
    1. Enter the WLAN view and run the attack detection flood interval intvalue times timesvalue command to configure the flood attack detection period and the maximum number of packets of the same type that an AP can receive within the period.
  3. Add attack devices to the dynamic blacklist so that packets from the device will be discarded.
    1. Enter the WLAN view and run the dynamic-blacklist enable command to enable the dynamic blacklist function.
    2. Run the dynamic-blacklist aging-duration duration command to set an aging time for the dynamic blacklist entries.

Related Information

None

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Updated: 2019-03-06

Document ID: EDOC1100041475

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