A CDK library containing EC2 security group related CDK Aspects and the ability to define custom aspects.

• Utilize built in aspects for common cases:
  • Disallow public access to any port
  • Disallow public access to AWS Restricted Common ports (per the AWS Config rule)
  • Disallow public access to SSH or RDP per CIS Benchmark guidelines and general good practice
  • Disallow public or ALL access to common management ports like SSH, RDP, WinRM, WinRM over HTTPS
  • Disallow public or ALL access common relational DB ports like MSSQL, MySQL, PostgreSQL, and Oracle
  • Disallow public or ALL common web ports like HTTP (80, 8080) and HTTPS (443, 8443)
• Create any other aspect using the base security group aspect class.
• By default aspects generate errors in the CDK metadata which the deployment or synth process will find, but this can be changed with the annotationType property
• All default provided aspects restrict based on the public access CIDRs (0.0.0.0/0 and ::/0) but you can also defined aspects with any set of restricted CIDRs or security group IDs you like

See API

// Add an existing aspect to your stack
Aspects.of(stack).add(new NoPublicIngressAspect());

// Add a custom aspect to your stack
Aspects.of(stack).add(new SecurityGroupAspectBase({
  annotationText: 'This is a custom message warning you how you should not do what you are doing.',
  annotationType: AnnotationType.WARNING,
  ports: [5985],
  restrictedCidrs: ['10.1.0.0/16'],
}));

// Change an existing aspects message and type
Aspects.of(stack).add(new NoPublicIngressAspect(
  annotationText: 'This is custom text.',
  annotationType: AnnotationType.WARNING
));