# IpsRulesSource
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The source of the rules for an IPS engine rule group.

## Contents
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 ** RulesString **   <a name="networkfirewall-Type-IpsRulesSource-RulesString"></a>
IPS engine rules, provided as a single Suricata-compatible rule string. For the rule format, see [Rules Format](https://suricata.readthedocs.io/en/suricata-8.0.3/rules/intro.html) on the Suricata website.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 2000000.  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/network-firewall-2020-11-12/IpsRulesSource) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/network-firewall-2020-11-12/IpsRulesSource) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/network-firewall-2020-11-12/IpsRulesSource)