amazon web services - Remove EC2 default security group -


i set new region in ec2 , created vpc network well. previous region created offshore company , in setup, security groups can see vpc. security groups don't have selection of ec2 , vpc i'm seeing 1 default.

in second region, see 2 defaults , dropdown lets me select/create security groups in both ec2 , vpc.

i can't seem figure out how remove default security group in ec2. says the security group 'default' reserved somehow offshore team able in other region. tried cli , got same error message

you cannot delete security group.

the reason difference between 2 regions 1 has been configured both ec2 , vpc (most us-east-1 region) , other configured "vpc". available options can viewed in top-right corner of ec2 dashboard page under "account attributes / supported platforms".

vpc refers virtual private cloud, allows configure own private network configurations. default regions.

ec2 (commonly known ec2-classic) pre-dates vpc , uses shared network space aws customers. has been progressively phased-out.

so, appear "previous region" has vpc, while "second region" (probably us-east-1) has both. default security group trying delete part of ec2-classic, , cannot delete it. isn't in "previous region" because region not enabled ec2-classic.

documentation on ec2-classic vs ec2-vpc: https://docs.aws.amazon.com/awsec2/latest/userguide/ec2-supported-platforms.html


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