terraform/website/source/docs/providers/aws/r/security_group.html.markdown

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---
layout: "aws"
page_title: "AWS: aws_security_group"
sidebar_current: "docs-aws-resource-security-group"
---
# aws\_security\_group
Provides an security group resource.
## Example Usage
```
resource "aws_security_group" "allow_all" {
name = "allow_all"
ingress {
from_port = 0
to_port = 65535
protocol = "tcp"
cidr_blocks = ["0.0.0.0/0"]
}
}
```
## Argument Reference
The following arguments are supported:
* `name` - (Required) The name of the security group
* `ingress` - (Required) Can be specified multiple times for each
ingress rule. Each ingress block supports fields documented below.
* `description` - (Optional) The security group description.
* `vpc_id` - (Optional) The VPC ID.
* `owner_id` - (Optional) The AWS Owner ID.
The `ingress` block supports:
* `cidr_blocks` - (Optional) List of CIDR blocks. Cannot be used with `security_groups`.
* `from_port` - (Required) The start port.
* `protocol` - (Required) The protocol.
* `security_groups` - (Optional) List of security group IDs. Cannot be used with `cidr_blocks`.
* `to_port` - (Required) The end range port.
## Attributes Reference
The following attributes are exported:
* `id` - The ID of the security group
* `vpc_id` - The VPC ID.
* `owner_id` - The owner ID.
* `name` - The name of the security group
* `description` - The description of the security group
* `ingress` - The ingress rules. See above for more.