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Fat AP and Cloud AP V200R010C00 Command Reference

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check (user-defined signature rule view)

check (user-defined signature rule view)

Function

The check command configures the matching order of user-defined signature rules.

The undo check command restores the default configuration.

Format

check { sequential | random-order }

undo check

Parameters

Parameter Description Value
sequential Indicates that user-defined signature rules are matched sequentially. -
random-order Indicates that user-defined signature rules are matched in random order. -

Views

User-defined signature rule view

Default Level

2: Configuration level

Usage Guidelines

User-defined signature rules are matched in random order by default.

If you select sequential, conditions are matched in ascending order by ID. An intrusion matches a rule only when the intrusion matches all conditions of the rule in configuration order.

If you select random-order, conditions are matched in random order. An intrusion matches a rule when the intrusion matches all conditions of the rule in either configuration order or random order.

Selecting sequential is not recommended. If you select it, the matching order becomes stricter, which may cause false positives during intrusion detection. Sequential check does not apply to value match (including:equal, gthan, lthan, and noequal).

Example

# Create user-defined signature rule hello in user-defined signature 1 and set the matching order to sequential.

<Huawei> system-view
[Huawei] ips signature-id 1
[Huawei-ips-signature-1] protocol TCP  
[Huawei-ips-signature-1] rule name hello
[Huawei-ips-signature-1-rule-hello] check sequential
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Updated: 2019-11-21

Document ID: EDOC1100064352

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