Security group for AWS Lambda to access RDS

Question

Was not able to find any security groups for AWS Lambda.

Is there a way to allow access from AWS Lambda to RDS without alowing all IPs (0.0.0.0/0) and without allowing all Amazon IP Range?

Answer 1

This feature is out as of yesterday

https://aws.amazon.com/blogs/aws/new-access-resources-in-a-vpc-from-your-lambda-functions/

Answer 2

As @user5919440 suggests, now that this new feature is out:

https://aws.amazon.com/blogs/aws/new-access-resources-in-a-vpc-from-your-lambda-functions/

...you simply need to tell AWS Lambda which VPC subnets to bind to your function. The function then can communicate with any AWS service that also has access to that subnet.

This means that you should be able to add a security group in your RDS that allows traffic from the same internal subnet (10.x.x.x) that your Lambda function is bound to.