文件从 ec2 复制到 aws 中的 s3 存储桶端口

Question

I would like to copy files from My ec2 instance to s3 bucket, I didn't open the port,protocol of ec2 security group. Still I am able to copy file from Ec2 to s3, how does that happens? on which port, protocol does traffic flow?

Answer 1

By default, the security group allows all outbound traffic which includes the s3 traffic(HTTPS) as well. You can disable this, but by doing this you are disabling all outbound HTTPS connections and your machine won't be able to communicate even for software/os update as well.

I understood that you are trying to find the CIDR for S3 service. For that you can use the following command

curl https://ip-ranges.amazonaws.com/ip-ranges.json | jq -r '.prefixes[] | select(.service=="S3") | .ip_prefix'

this will list all the IPv4 addresses used by AWS s3.