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Fit AP V200R010C00 Command Reference

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anti-attack fragment enable

anti-attack fragment enable


The anti-attack fragment enable command enables defense against packet fragment attacks.

The undo anti-attack fragment enable command disables defense against packet fragment attacks.

The anti-attack fragment disable command disables defense against packet fragment attacks.

By default, defense against packet fragment attacks is enabled.


anti-attack fragment enable

undo anti-attack fragment enable

anti-attack fragment disable




System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

If an attacker sends error packet fragments to attack the device, the device consumes a large number of resources to process the error packet fragments, affecting normal services. To prevent the system from breaking down and to ensure normal network services, run the anti-attack fragment enable command to enable defense against packet fragment attacks.

The device detects error packet fragments after defense against error packet fragments is enabled. If the device detects error packet fragments, the device limits the rate of these fragments to ensure that the device CPU works properly.


You can also run the anti-attack enable command in the system view to enable attack defense against all attack packets including packet fragments.


# Enable defense against packet fragment attacks.

<Huawei> system-view
[Huawei] anti-attack fragment enable
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Updated: 2019-07-18

Document ID: EDOC1100064353

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