To create a database user account that uses an AWS authentication token you need to connect to your RDS with master credentials as an example. Something, I have not discussed as part of this article is how to create IAM DB users. They are all required to generate the auth token. In the script above, you can easily follow three variables being set, that is REGION, IAMDBUSER and HOSTNAME. #!/usr/bin/env bash REGION="eu-central-1" IAMDBUSER="user-iam-admin" HOSTNAME=" ." # Make sure you have the right region for the token!! TOKEN="$(aws rds generate-db-auth-token -hostname $ Note: generated token expires within 15 minutes of creation. Remember that you need to have your AWS credentials set as normal in order to generate necessary credentials for your RDS. You need to generate an AWS authentication token to identify the IAM role and this is effectively your password. The difference when working with IAM roles is the fact that you need to generate Auth Token. The above command will open a SSH tunnel and now you can access your database by running: mysql -u username -h 127.0.0.1 -P 3307 -p password Access DB with IAM role ssh/config Host rds_tunnel User ec2-user Hostname 30.143.243.20 Localforward 3307 .:3306 IdentityFile ~/.ssh/id_rsa.pemĪnd then you can simply use ssh rds_tunnel Access DB without IAM This is useful for just forwarding ports.įor more SSH info, you can simply run ssh man in your terminal. Then it says we’re forwarding our local port 3306 to .:3306, which is the default port for MySQL DB.įlag -N indicates to not execute a remote command. The key here is -L which says we’re doing local port forwarding. We are going to take advantage of IAM role as we enabled IAM DB authentication on the RDS DB instances.īastion Host Port: 22 and RDS Aurora MySQL Port: 3306ĭatabase endpoint. Opening SSH tunnel cli ssh -N -L 3307: .:3306 -p 22 ec2-user will forward port 3307 from your local desktop to the remote Aurora MySQL RDS cluster through a Public facing bastion EC2 instance, in our case it is bastion with IP 30.143.243.20. In our case, we have a RDS Aurora MySQL cluster in private subnet which can only be accessed via bastion host. SSH tunneling enables adding network security to legacy applications that do not natively support encryption. This means that the application data traffic is directed to flow inside an encrypted SSH connection so that it cannot be eavesdropped or intercepted while it is in transit. It also provides a way to secure the data traffic of any given application using port forwarding, basically tunneling any TCP/IP port over SSH. SSH is a standard for secure remote logins and file transfers over untrusted networks. It can also be used to implement VPNs (Virtual Private Networks) and access intranet services across firewalls. It can be used to add encryption to legacy applications. SSH tunneling is a method of transporting arbitrary networking data over an encrypted SSH connection.
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