![]() ![]() After pressing “Return” or “Enter” on the keyboard, you will be presented with a prompt letting you know that you have successfully logged into the system. Due to the flaws of passwords such as password reuse, password leaks, as well as easily guessable passwords, using keys for authentication is a much better practice from a security standpoint. You can think of a key as a password for the user that you are authenticating as. ![]() The ‘-i “Downloads\nvirginia-keypair.pem”’ is the “key” that is being used for the “kali” user to authenticate to the system with the IP address of 3.236.254.169. The says tells the SSH program that you would like to authenticate as the “kali” user on the system with the IP address of 3.236.254.169, which happens to be a Linux system. We’ll start with the username/key combo for demonstration purposes:įrom the screenshot, the first line is me running the SSH command from a command line window (cmd.exe) on my Windows system, which is one of the default applications available on Windows 10 systems. Authentication is typically done with either a username/password combo or a username/key combo, the latter being the more secure method. ![]() From a beginner security professional perspective, however, all you need to know is that it is used to log into Linux systems and can be configured in a number of ways to provide a secure means of authentication into Linux systems. SSH was developed in order to address these concerns and more, and is now the de facto standard for logging into Linux systems. The issue with these insecure protocols is that there were a number of vulnerabilities associated with them, which included poor/non-existent authentication measures and sending data over the network in cleartext. It is the successor to previous, more insecure protocols that allowed you to issue commands and administer Linux systems. SSH (short for Secure Shell) is one of the network protocols that has been around since the mid 90s. ![]()
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