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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. hwWlanWidsPSKAttackDetectedNotify

WLAN_1. hwWlanWidsPSKAttackDetectedNotify


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 PSK brute force attack was detected.


Alarm ID Alarm Severity Alarm Type Warning environmentalAlarm(6)


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.
  • 14: Wep Share-key Attack
  • 15: WPA Attack
  • 16: WPA2 Attack
  • 17: WAPI Attack
Attack type string Indicates the name of attack type. For details, see attacks corresponding to the attack type IDs.

Impact on the System


Possible Causes

  • A PSK brute force attack was detected.


  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 weak IV 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 psk interval intvalue times timesvalue command to configure the period for PSK brute force attack detection and the number of key negotiation attempts allowed 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


Updated: 2019-03-06

Document ID: EDOC1100041475

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