Set Up Password-less SSH Login

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Institution up passwordless SSH logins are a great way to speed up up connections to frequently used remote Macs and Unix boxes. Since not all versions of Mac OS X include the ssh-copy-id command, you may need to use cat or scp to copy your ssh key. This is how to set everything up, it only takes a minute or so.

First, you want to generate a secure SSH key on the local machine:

ssh-keygen

Walk through the key generator and set a password, the key file defaults to ~ / .ssh / id_rsa

Then you need to copy the generated key to the remote server you want to set up passwordless logins with, this is easy to do with the following command string, but you can use ssh-copy-id or scp if you want:

cat ~ / .ssh / id_dsa.pub | ssh user @ remotehost ‘cat >> ~ / .ssh / authorized_keys’

(Don’t forget to replace “user @ remotehost” with the correct username and the external IP address or domain of the server)

This command gets the generated SSH key from the local machine, connects to the remote host via SSH, and then uses cat to add the key file to the remote users’ authorized keys list. Since this connects via SSH to the remote machine, you must enter the normal ssh login password to use this command.

Finally, confirm that you can now log in to the remote SSH server without a password:

ssh user@remotehost.com

Assuming the initial setup went as intended, connect to the remote machine without logging in. You can shorten the connection steps even further by creating an alias in bash_profile so that you only have to type a short command to immediately connect to the specified remote server.

There are some obvious potential security risks when using ssh without a password, the best way to overcome this is to lock the client computer with lock screens for screen saver and sleep mode, using a lock screen shortcut when leaving a workstation unattended , and setting the correct login passwords and enabling FileVault disk encryption, all of which you should be using anyway. You can even go a step further and enable a firmware password.

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How to Set Up a Password-less SSH Login: FAQ

Tutorial Summary: How to Set Up a Password-less SSH Login


In this guide, we told you about How to Set Up a Password-less SSH Login; please read all steps so that you understand How to Set Up a Password-less SSH Login in case if you need any assistance from us, then contact us.

How this tutorial helping you?


So in this guide, we discuss the How to Set Up a Password-less SSH Login, which undoubtedly helps you.

What is actual time in which this method complete?


The time to complete the How to Set Up a Password-less SSH Login tutorial is 10+ minutes.

What are the supported Device?


Apple

What are the supported Operating system?


mac OS



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