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In AWS Security Groups, what is the difference between "Name" and "Group Name"? It's confusing because when one creates a "Security Group", "Name" would seem to be interpreted as "name of the security group"...but then there is "Group Name". Seems redundant to the point of confusion. "Group Name" seems to be the more substantive and important field.
The "Name" field can be changed by clicking the pencil icon as shown in the screenshot below:
But the "Group Name" cannot be edited and can be specified only at the time of creation:
I've been simply setting Name to be the same as Group Name for consistency and simplicity. I can't find any guidance on best practices for the "Name" field and how or if it should be named relative to the "Group Name" field (the pop-up help on AWS simply describes required naming syntax). Is "Name" just a convenience field which has little to zero significance (since it can be easily changed at any point)? What are the programmatic and functional effects of these names?
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You can change the security groups when the instance is in the running or stopped state. Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/ . In the navigation pane, choose Instances. Select your instance, and then choose Actions, Security, Change security groups.
Name: The name for the security group (for example, "my-security-group"). A name can be up to 255 characters in length. Allowed characters are a-z, A-Z, 0-9, spaces, and .
You can apply multiple security groups to a single EC2 instance or apply a single security group to multiple EC2 instances. System administrators often make changes to the state of the ports; however, when multiple security groups are applied to one instance, there is a higher chance of overlapping security rules.
Name is simply displaying the value of the Name tag on the security group.
The real name is the Group Name, which cannot be changed after creation.
Yes, it is confusing!
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