Curl-url-http-3a-2f-2f169.254.169.254-2flatest-2fapi-2ftoken Jun 2026

Enforce IMDSv2 only:

aws ec2 modify-instance-metadata-options \ --instance-id i-12345 \ --http-tokens required \ --http-endpoint enabled curl-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fapi-2Ftoken

The command curl -X PUT "http://169.254.169" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600" is a critical component of modern cloud security within Amazon Web Services (AWS). It represents the transition from the legacy Instance Metadata Service Version 1 (IMDSv1) to the more secure . What is 169.254.169.254? curl-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fapi-2Ftoken

curl -H "X-aws-ec2-metadata-token: YOUR_TOKEN_HERE" http://169.254.169.254/latest/meta-data/instance-id curl-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fapi-2Ftoken