# SecurityGroupRule
<a name="API_SecurityGroupRule"></a>

Describes a security group rule.

## Contents
<a name="API_SecurityGroupRule_Contents"></a>

 ** cidrIpv4 **   
The IPv4 CIDR range.  
Type: String  
Required: No

 ** cidrIpv6 **   
The IPv6 CIDR range.  
Type: String  
Required: No

 ** description **   
The security group rule description.  
Type: String  
Required: No

 ** fromPort **   
If the protocol is TCP or UDP, this is the start of the port range. If the protocol is ICMP or ICMPv6, this is the ICMP type or -1 (all ICMP types).  
Type: Integer  
Required: No

 ** groupId **   
The ID of the security group.  
Type: String  
Required: No

 ** groupOwnerId **   
The ID of the AWS account that owns the security group.   
Type: String  
Required: No

 ** ipProtocol **   
The IP protocol name (`tcp`, `udp`, `icmp`, `icmpv6`) or number (see [Protocol Numbers](http://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml)).   
Use `-1` to specify all protocols.  
Type: String  
Required: No

 ** isEgress **   
Indicates whether the security group rule is an outbound rule.  
Type: Boolean  
Required: No

 ** prefixListId **   
The ID of the prefix list.  
Type: String  
Required: No

 ** referencedGroupInfo **   
Describes the security group that is referenced in the rule.  
Type: [ReferencedSecurityGroup](API_ReferencedSecurityGroup.md) object  
Required: No

 ** securityGroupRuleArn **   
The ARN of the security group rule.  
Type: String  
Required: No

 ** securityGroupRuleId **   
The ID of the security group rule.  
Type: String  
Required: No

 ** TagSet.N **   
The tags applied to the security group rule.  
Type: Array of [Tag](API_Tag.md) objects  
Required: No

 ** toPort **   
If the protocol is TCP or UDP, this is the end of the port range. If the protocol is ICMP or ICMPv6, this is the ICMP code or -1 (all ICMP codes). If the start port is -1 (all ICMP types), then the end port must be -1 (all ICMP codes).  
Type: Integer  
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\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/SecurityGroupRule) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/SecurityGroupRule) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/SecurityGroupRule)