Mac Os Sierra Generate Ssh Key
Log in with an SSH private key on Linux and macOS
You can add as many keys as you like and ssh-add -l will show you which keys are registered. When you reboot, you’ll notice that ssh-add -l is empty which is different from how it works on macOS 10.11 and earlier which automatically re-added the keys it knew about. In Sierra, Apple has changed it so that you now need to explicitly add the. Mar 22, 2019 Creating a new Key pair in Mac OS X or Linux. Ssh-keygen is a program that can be found on Mac, Linux, and other UNIX-based operating systems. Wikipedia; Creating a Key pair. To generate a new Key pair, run the following commands on your home computer. Open your terminal and run the following command under your username. I'm trying to connect to my host using SSH key. I've generated a key pair and added public key to authorized keys to the server. However I'm unable to connect to server using my private key. Every time I connect it asks for the password. I've tried to run ssh-add mykeyname and it said that it's fine and been added. But it is not working. Oct 01, 2016 The MacOS Sierra upgrade breaking SSH keys. After I upgraded MacOS Sierra, my SSH key access to Ubuntu servers broke. I learned that my older ssh-dss (DSA) keys were no longer secure and that I needed to replace them with RSA keys. Oct 06, 2018 This guide goes through setting up SSH keys on macOS Mojave 10.14 back to Mac OSX 10.11 and also a secure password-less SSH connection between a local macOS workstation and a remote server also running a Linux variant operating system. The process requires generating a public and private key on the local computer and then adding the public key to the remote servers authorised.
This article demonstrates how to use a private key to log in to a Linux速server by using a private key with a Terminal session on macOS速. However,you can follow the same process to use a private key when using anyterminal software on Linux.
Note: For information about using Secure Shell (SSH) private keys on Microsoft速 Windows速 operating systems, see Logging in with an SSH Private Key on Windowsand Generate RSA keys with SSH by using PuTTYgen.
Generate Ssh Key On Mac
Prerequisites
To complete this process, you need the following software applications:
- SSH client software that is installed on your Linux or macOS operating system by default.
- Your favorite text editor. This example uses the vim text editor.
- Your private key. For more information about generating a key on Linux or macOS, see Connect to a server by using SSH on Linux or Mac OS X.
Log in with a private key
Using a text editor, create a file in which to store your private key. This example uses the file deployment_key.txt.
To edit the file in vim, type the following command:
After the editor starts, press i to turn on insert mode.
Paste your private key, such as the one in the following image, into the file.Be sure to include the BEGIN and END lines.
To save your changes, press Esc.
Type :wq to write the file and return to the command line.
Run the following command to change the file permissions to 600 to secure the key. You can also set them to 400.This step is required:
Use the key to log in to the SSH client as shown in the following example, which loads the key in file deployment_key.txt, and logs in as user demo to IP 192.237.248.66:
When you are prompted to confirm the connection, type yes and then press Enter.
If your SSH key requires a password, enter it when prompted to complete the connection.
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After I upgraded MacOS Sierra, my SSH key access to Ubuntu servers broke. I learned that my older ssh-dss (DSA) keys were no longer secure and that I needed to replace them with RSA keys.
Updating server keys is always a bit time consuming. If you want more background on this, check out: Secure Your Instance
Mac Ssh Public Key
Here’s what worked well for me:
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Reactivate Password Authentication
Firstly, I logged into my Digital Ocean droplets via the virtual host console they offer. With this, I turned back on PasswordAuthentication temporarily on my servers:
$ sudo nano /etc/ssh/sshd_config
# Change this back temporarily to yes
# Change to no to disable tunnelled clear text passwords
PasswordAuthentication yes
Then, I reset the SSH service:$ sudo service ssh restart
If you can’t access your server in any way, there may be no easy way to regain access without using another device. For example, I use Panic’s Prompt 2 SSH App on my iPad.
Mac Os Sierra Generate Ssh Key Windows
Create a New RSA Key
Next, we’ll create the new RSA key on my Mac.$ ssh-keygen -t rsa
You’ll see something like this:$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/Users/Jeff/.ssh/id_rsa): id_newkey
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in id_newkey.
Your public key has been saved in id_newkey.pub.
The key fingerprint is:
SHA256:aUxJKyyyyyyJW9cTqZxxxxxxCErTmI8
The key's randomart image is:
+---[RSA 2048]----+
*B%a .
Fo.+.oo
. o C. o
.=.+o.
o 7 +o o
.o.. .
o . o.
. o= oS o.
. ..
+----[SHA256]-----+
Then, I copied out the public key so I could upload to a sharing service:$ cat ~/.ssh/id_newkey.pub
ssh-rsa AAAAB3NzaC1yxxxxyyyyzzzz123121231jakdljasdasdasdklasjdlakszaC1yxxxxyyyyzzzz123121231jakdljasdasdasdklasjdlakszaC1yxxxxyyyyzzzz123121231jakdljasdasdasdklasjdlakszaC1yxxxxyyyyzzzz123121231jakdljasdasdasdklasjdlakszaC1yxxxxyyyyzzzz123121231jakdljasdasdasdklasjdlaksfTt12MRn Jeff@Skybook-Pro.local
Upload the New Key to Github Gist
Next, I created a new private Gist and pasted the public key into it and saved it.
Visiting the raw page for that gist, I copied the URL for the raw content of the Gist. There may be a more obvious way in the UX but I couldn’t find it.
Sign in to Your Server
Next, I used password authentication to sign in to my server:$ ssh -p 22 superjeff@webstar.lookingatyour.com
And, I performed the following steps to retrieve the public key from Gist and store it on the server. Then, add it to the authorized_keys file:
$ cd ~
$ wget https://gist.githubusercontent.com/newscloud/415axxxxyyyyyzzzz123axxxxyyyyyzzzz123axxxxyyyyyzzzz12392/id_newkey
$ cd .ssh
$ cat ./id_newkey >> authorized_keys
Verify New Key Authentication to to Your Server
Then, I tested it in another terminal window from my Mac:$ ssh -p 22 -i ~/.ssh/id_newkey superjeff@webstar.lookingatyour.com
Everything worked fine!
Mac Ssh Key Location
Turn Off Password Access to Your Server
Then, I returned to the server and turned off PasswordAuthentication:$ sudo nano /etc/ssh/sshd_config
# Change to no to disable tunnelled clear text passwords
PasswordAuthentication no
Then, I reset the SSH service:$ sudo service ssh restart
And that was it, just a few hours lost hunting down and duplicating the proper steps.
It’s odd I didn’t know about this and odd that the Sierra upgrade doesn’t warn you about it as it upgrades OpenSSH behind the scenes.