AWS::EC2::SecurityGroup Ingress - AWS CloudFormation
SyntaxProperties

AWS::EC2::SecurityGroup Ingress

Adds an inbound (ingress) rule to a security group.

An inbound rule permits instances to receive traffic from the specified IPv4 or IPv6 address range, the IP address ranges that are specified by a prefix list, or the instances that are associated with a source security group. For more information, see Security group rules.

You must specify exactly one of the following sources: an IPv4 address range, an IPv6 address range, a prefix list, or a security group.

You must specify a protocol for each rule (for example, TCP). If the protocol is TCP or UDP, you must also specify a port or port range. If the protocol is ICMP or ICMPv6, you must also specify the ICMP/ICMPv6 type and code.

Rule changes are propagated to instances associated with the security group as quickly as possible. However, a small delay might occur.

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{
  "CidrIp" : String,
  "CidrIpv6" : String,
  "Description" : String,
  "FromPort" : Integer,
  "IpProtocol" : String,
  "SourcePrefixListId" : String,
  "SourceSecurityGroupId" : String,
  "SourceSecurityGroupName" : String,
  "SourceSecurityGroupOwnerId" : String,
  "ToPort" : Integer
}

YAML

  CidrIp: String
  CidrIpv6: String
  Description: String
  FromPort: Integer
  IpProtocol: String
  SourcePrefixListId: String
  SourceSecurityGroupId: String
  SourceSecurityGroupName: String
  SourceSecurityGroupOwnerId: String
  ToPort: Integer

Properties

CidrIp

The IPv4 address range, in CIDR format.

You must specify exactly one of the following: CidrIp, CidrIpv6, SourcePrefixListId, or SourceSecurityGroupId.

For examples of rules that you can add to security groups for specific access scenarios, see Security group rules for different use cases in the Amazon EC2 User Guide.

Required: No

Type: String

Update requires: No interruption

CidrIpv6

The IPv6 address range, in CIDR format.

You must specify exactly one of the following: CidrIp, CidrIpv6, SourcePrefixListId, or SourceSecurityGroupId.

For examples of rules that you can add to security groups for specific access scenarios, see Security group rules for different use cases in the Amazon EC2 User Guide.

Required: No

Type: String

Update requires: No interruption

Description

Updates the description of an ingress (inbound) security group rule. You can replace an existing description, or add a description to a rule that did not have one previously.

Constraints: Up to 255 characters in length. Allowed characters are a-z, A-Z, 0-9, spaces, and ._-:/()#,@[]+=;{}!$*

Required: No

Type: String

Update requires: No interruption

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).

Required: No

Type: Integer

Update requires: No interruption

IpProtocol

The IP protocol name (tcp, udp, icmp, icmpv6) or number (see Protocol Numbers).

Use -1 to specify all protocols. When authorizing security group rules, specifying -1 or a protocol number other than tcp, udp, icmp, or icmpv6 allows traffic on all ports, regardless of any port range you specify. For tcp, udp, and icmp, you must specify a port range. For icmpv6, the port range is optional; if you omit the port range, traffic for all types and codes is allowed.

Required: Yes

Type: String

Update requires: No interruption

SourcePrefixListId

The ID of a prefix list.

Required: No

Type: String

Update requires: No interruption

SourceSecurityGroupId

The ID of the security group.

Required: No

Type: String

Update requires: No interruption

SourceSecurityGroupName

[Default VPC] The name of the source security group. You must specify either the security group ID or the security group name. You can't specify the group name in combination with an IP address range. Creates rules that grant full ICMP, UDP, and TCP access.

For security groups in a nondefault VPC, you must specify the group ID.

Required: No

Type: String

Update requires: No interruption

SourceSecurityGroupOwnerId

[nondefault VPC] The AWS account ID for the source security group, if the source security group is in a different account. You can't specify this property with an IP address range. Creates rules that grant full ICMP, UDP, and TCP access.

If you specify SourceSecurityGroupName or SourceSecurityGroupId and that security group is owned by a different account than the account creating the stack, you must specify the SourceSecurityGroupOwnerId; otherwise, this property is optional.

Required: Conditional

Type: String

Update requires: No interruption

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).

Required: No

Type: Integer

Update requires: No interruption