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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_1.3.6.1.4.1.2011.6.139.15.1.1.11 hwWlanWidsPSKAttackDetectedTrap

WLAN_1.3.6.1.4.1.2011.6.139.15.1.1.11 hwWlanWidsPSKAttackDetectedTrap

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 brute force attack was detected.

Attribute

Alarm ID Alarm Severity Alarm Type
1.3.6.1.4.1.2011.6.139.15.1.1.11 Warning environmentalAlarm(6)

Parameters

Name Meaning
oid Indicates the OID of the alarm.
Monitor AP mac Indicates the MAC address of a monitoring AP.
Device Mac Indicates the MAC address of the attacking device.
Device channel Indicates the channel of the attacking device.
Attack type
Indicates the ID of attack type.
  • 14: brute force cracking attack in WEP-SK authentication mode
  • 15: brute force cracking attack in WPA-PSK authentication mode
  • 16: brute force cracking attack in WPA2-PSK authentication mode
  • 17: brute force cracking attack in WAPI authentication mode
Attack type string Indicates the name of attack type. For details, see attacks corresponding to the attack type IDs.

Impact on the System

None.

Possible Causes

A brute force attack was detected.

Procedure

  1. Run the display wlan ids attack-detected and display wlan ids attack-detected statistics commands to check information about attacking devices and attack statistics and determine whether an 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.

    Enter the WIDS profile view and run the brute-force-detect interval and brute-force-detect threshold commands to configure the period for brute force attack detection and the number of key negotiation failures allowed within the period.

  3. Add the attacking device to the dynamic blacklist so that packets from the device will be discarded.
    1. Enter the specified WIDS profile view and run the dynamic-blacklist enable command to enable the dynamic blacklist function.
    2. Enter the specified AP system profile view and run the dynamic-blacklist aging-time command to configure an aging time for the dynamic blacklist entries.
  4. Then, check whether the alarm persists.

    • If so, go to Step 5.
    • If not, go to Step 6.

  5. Collect alarm messages, log messages, and configurations, and then contact the technical support personnel.
  6. End.

Related Information

None.

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Updated: 2019-03-06

Document ID: EDOC1100041475

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