1/19/2024 0 Comments Reverse ssh port forwarding![]() ![]() Zooming out, we can see the individual resources we're dealing with. Fortunately for us, this process is way easier to do than it is to understand. The end-state of this interaction being that you can connect your local machine to the remote instance, so that you can use the tunnel ( in reverse) to connect from the server to your local machine. You can then use that established connection to set up a new connection from your local machine back to the remote instance. Your local machine initiates a connection by forwarding a port on the remote instance to your local machine. SSH reverse tunneling on the other hand, sets up an omnidirectional connection between a port on your local machine and a port on the remote instance. With a traditional SSH, your machine can connect to a remote instance. I will post a link here when that goes up. This post goes hand in hand with another piece I will be uploading soon the purpose of that post being a beginner's DevOps/Cloud Architect's guide to bringing up the foundational infrastructure featured below. That's where SSH port forwarding/tunneling + Bastion Hosts come in. With AWS you have VPNs and AWS Direct Connect as options, but the overhead isn't worth it unless you have very specific requirements. Resources in private subnets are notoriously hard to connect to (by design). ![]() Do you have publicly inaccessible database that you need to SSH into? Using SSH Reverse Tunneling, aka SSH Reverse Port Forwarding, you can securely connect to the database without directly opening it up to a vector of attack. ![]()
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