![]() ![]() It is much more secure than traditional password authentication, especially compared to hard-coded passwords in scripts, but the keys need proper management. Public key authentication uses a new kind of access credential, the SSH key, for authentication. SSH is often used with public key authentication to implement automation and single sign-on. ![]() The following should work on most systems. Depending on the system, you may also need to start the server if you don’t want to reboot. On Debian-derived systems, the following will install the server. On some distributions, you may need to install the server. However, if you are planning to use PuTTY to log into your own systems, then you may need to install and enable a server. You don’t need to worry about a server if you are going to connect to a school or work server. Several more modern alternatives are available. ![]() See Tectia SSH if you’d like that functionality. It only works on the command line, and does not support graphically dragging and dropping files between systems. See the separate puttygen page on how to create and set up SSH keys with it. However, this should not be assumed to provide great security – malware on the machine where it is used can still compromise the software cf.ĬIA hacking tool bothanspy and viruses may get installed on the USB stick whenever it is inserted in a new machine. This way, the user can carry the executable with them. It can also be used standalone, without the installation package, by simply copying the executable to a USB stick and running it on a new machine. On Red Hat 7, it can be installed with yum install gnupg2. On Debian-based Linux, it can be installed with aptitude install gnupg. To verify the signatures, you need the gpg tool. Setting up public key authentication using PuTTYgen. For information on SFTP secure file transfers, see here. It is typically used for remote access to server computers over a network using the SSH protocol. ![]()
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