kmgish

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The passphrase is the unlock password for the private key<br />
So if you make private,public keypairs without password there is no passphrase.. (that is the only setting for passphrases).<br />
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The other info has been given by Gary already.
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The passphrase is the unlock password for the private key
So if you make private,public keypairs without password there is no passphrase.. (that is the only setting for passphrases).

The other info has been given by Gary already.

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Thanks Gary, That's exactly the answer I was looking for!
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Thanks Gary, That's exactly the answer I was looking for!

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My company has setup an Ubuntu 18.04 server, to exchange files with a client, via SFTP. &nbsp;We need a high level of security. &nbsp;We're trying to require authentication with SSH key pairs, AND the Linux OS username and password (not the SSH passphrase). We've got the key pairs working, but it doesn't ask for the password. I'm assuming we're just missing something in the sshd_config file. Hopefully we're not trying to do something that's not possible. Any assistance would be much appreciated.<br />
<br />
Thanks!<br />
Mark
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My company has setup an Ubuntu 18.04 server, to exchange files with a client, via SFTP.  We need a high level of security.  We're trying to require authentication with SSH key pairs, AND the Linux OS username and password (not the SSH passphrase). We've got the key pairs working, but it doesn't ask for the password. I'm assuming we're just missing something in the sshd_config file. Hopefully we're not trying to do something that's not possible. Any assistance would be much appreciated.

Thanks!
Mark

Setup SSH key pair authentication, in addition to OS username and password on Linux Ubuntu

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. For large systems, the operating system makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system. Operating systems provide a software platform on top of which other programs, called application programs, can run.

Operating Systems

Telnet is an application layer protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. SSH was designed as a replacement for Telnet and for unsecured remote shell protocols. The term telnet is also used to refer to the software that implements the client part of the protocol. SSH provides a secure channel over an unsecured network in a client-server architecture, connecting an SSH client application with an SSH server.