Tagged: SSH

sudo as root X11 connection rejected because of wrong authentication

I received this problem recently when I logged into root on a machine. X11 connection rejected because of wrong authentication How did this problem happen? Here’s what I did. ssh -X huyle@host sudo su xclock X11 connection rejected because of wrong authentication If I open xclock as a user, then X11 works just fine. As a result, I know that the server and client’s X11 forwarding is working. A root problem My .Xauthority and X11 credentials aren’t being passed over to root. ssh...

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How to Create SSH Keys for Secure SSH Access

Create SSH keys for SSHing SSH keys allow you to SSH into a machine without a password prompt. Before we create our SSH key, make sure that we have a ~/.ssh folder. If not, create the ~/.ssh folder. mkdir ~/.ssh Now, we can use the following command to generate an SSH public key and private key: ssh-keygen -t rsa -b 4096 -C “your_email@example.com” -t represents the encryption scheme. -b represents the number of bits. -C is used for e-mail identification. You...

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How to Setup Shortcuts for SSH

Instead of using SSH on an IP address that you’ll definitely forget, you can use shortcuts instead! For instance, instead of typing: ssh username@192.168.1.1 Wouldn’t you rather do something like:

  Creating SSH shortcuts To create shortcuts, you have to create a file inside your home directory’s .ssh folder called config.

If the ~/.ssh directory does not exist.

Now, we can create the config file.

For every IP address that you want to add a shortcut, add...

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