# PublicSourceEndpointNetworkingConfigurationAllowRule
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A rule that allows a specific CIDR block to connect to the public source endpoint.

## Contents
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 ** cidr **   <a name="mediaconnect-Type-PublicSourceEndpointNetworkingConfigurationAllowRule-cidr"></a>
The CIDR block that is allowed to connect to the source endpoint, in CIDR notation.  
Type: String  
Pattern: `(?:[0-9]{1,3}\.){3}[0-9]{1,3}/([0-9]|[12][0-9]|3[0-2])`   
Required: Yes

## 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/mediaconnect-2018-11-14/PublicSourceEndpointNetworkingConfigurationAllowRule) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/mediaconnect-2018-11-14/PublicSourceEndpointNetworkingConfigurationAllowRule) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/mediaconnect-2018-11-14/PublicSourceEndpointNetworkingConfigurationAllowRule)