This is the main answer we explore in this article. What are the problems with opening SSH connections from untrusted sources? Force all users to log in with an SSH key pair, and then deactivate password authentication.Don’t allow the root user to use an SSH terminal.Don’t expose the SSH port to the world.AWS explains how to securing SSH on EC2 following best practices. However, this ease of access also makes it convenient for attackers. And it’s rather easy to connect via an SSH client if you have access to those keys. As soon as you spin up a machine, SSH access is configured via a RSA key pair. When talking about AWS, SSH is enabled by default on EC2 instances. It is therefore important to protect and audit SSH logins. This is a main entry point for attackers, since once you can access via SSH, you are several steps closer to gaining control of the full machine. The Secure Shell Protocol (SSH) is the standard for remotely managing a server/machine, and replaces telnet as the secure alternative. In this article, we’ll honestly explain the real threats that you are susceptible to when you have this misconfiguration. When this happens, you may think: Have I been pwned?Īnd you wouldn’t be at fault, since internet information and marketing materials are often quite alarming on this topic. For example, if you don’t secure SSH on EC2, you’ll certainly get a critical alert stating that one of your Security Groups has its SSH port (22) open to the world. Every compliance audit will ask you to securing SSH, and every time a scanner checks the configuration or CSPM of your cloud account you’ll be warned for it.
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