Do you still need password for Sudo when using SSH?

Do you still need password for Sudo when using SSH?

SSH with public-private key authentication comes enabled by default with most Linux distributions. This is great because when I create accounts for remote users I don’t have to email them sensitive info (passwords). However, this process becomes useless when these users need to run sudo — the server is still asking for their passwords.

Do you need a SSH key to create a password?

There is pros and cons in every approach, but a good place for inspiration is the commercial and free Shell account services. You can create a password for the user, then encrypt the password using the user’s ssh public key (which you already have), then send the user the encrypted password.

What’s the default authentication mode when using SSH?

The default authentication mode when using SSH is the private key. Whenever that fails for some reason, the ssh-agent falls back to username and password based authentication. There are several reasons why the default key based authentication might have failed.

Why does SSH always ask for your passphrase?

Then, when I enter my passphrase, it passes. If you work with HTTPs urls, it’ll always ask for your username / password. If you’re correctly using SSH when cloning / setting remotes. Then make sure you have a ssh-agent to remember your password. That way, you’ll only enter your passphrase once by terminal session.

How to setup a passwordless ssh login in Linux?

In this tutorial, we will show you how to setup an SSH key-based authentication as well how to connect to your Linux server without entering a password. To set up a passwordless SSH login in Linux all you need to do is to generate a public authentication key and append it to the remote hosts ~/.ssh/authorized_keys file.

How to disable password authentication on SSH server?

Disabling SSH Password Authentication# 1 Log into your remote server with SSH keys, either as a user with sudo privileges or root: ssh… 2 Open the SSH configuration file /etc/ssh/sshd_config, search for the following directives and modify as it… More

How to setup sudo for a specific user?

Save and close the file when you are finished. If you want to allow all users to execute sudo without a password (note: this is only advisable in test systems and should never be used on production workloads), edit the /etc/sudoers file: Find the following line: Replace it with the following line:

Is it necessary to create SSH key as root?

Note that you should probably avoid using the root account for things that don’t strictly need super user privileges, so creating SSH keys for root is seldom necessary. In general: Create the key as the user who will use the key.

How to change SSH password to root user?

Make sure you have proper permissions set to the script (e.g. chmod 740) Login via SSH (as unprivileged user), then run the command su without any arguments to change to the root user. You will need the root password to do this. Then run whatever commands you want to run.

Can You Sudo su-user2 from user1?

But the other thing that i would like also to do, is to be able to sudo su – user2 from user1, by using the ssh keys, so i can avoid the password prompting. but still i am not able to do it. I also tried what i found on the internet regarding agent forwarding, but nothing. Can anyone help me on how to do this or point me to the right direction?

How to fix X11 forwarding over SSH and Sudo lone?

If you run “sysctl net.ipv6.conf.all.disable_ipv6” and it comes back as 1, or “lsmod | grep ipv6” shows nothing you might have IPv6 disabled. Turns out OpenSSH hates that and has a very passive-aggressive way of showing it. Add “AddressFamily inet” to your sshd_config and restart the daemon.

What is the purpose of a Sudo account?

The purpose of sudo is to give accounts that are logged in some separation between untrusted applications and admin-like tasks, and make users aware they are changing the system (and have to watch out). For desktops, both applies.

Is the X11 forwarding enabled in SSH config file?

If you are using a command-line client, or forwarding across multiple hosts, is X11 forwarding enabled in your ~/.ssh/config file? Add “ForwardAgent yes” and “ForwardX11 yes” to it. You can also force it with “ssh -X user@host” when you connect.