title: AWS Lambda access to RDS outside VPC
body: <p>The RDS instance is not on VPC (Classic); it is associated to a security group with allowances to some CIDR/IPs and EC2 security groups.</p>
  
  <p>I want to create a AWS Lambda function that will execute some SQL statements on this database, and also make requests to a EC2 instance that is in the same security group. Is it possible to allow Lambda to access this database?</p>