Create a new SSH user on Ubuntu Server

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I

am a new Ubuntu Linux 16.04.xx LTS server user. How do I create a new sudo user on my server? How do I add a new user as sudoer file using the command line option on Ubuntu?


In Linux (and Unix in general), there is a SuperUser named root. The root user can do anything and everything, and thus doing daily work as the root can be very dangerous. You could type a command incorrectly and destroy the system. The sudo command allows a permitted user to run a command as the superuser (root user) or another user, as specified by the security policy. Often the sudo used on servers to give admin permissions and privileges to ordinary users. In this

quick tutorial, you will learn how to create a sudo user on Ubuntu

.

Steps to create a new sudo user on Ubuntu

First add the user, run: sudo adduser Add the user to sudo group by typing the command in terminal for Ubuntu version 12.04 and above: sudo adduser sudoIn older version of Ubuntu (version 12.04 and...
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Parent page: Internet and Networking >> SSH

Once you have installed an OpenSSH server,

sudo apt-get install openssh-server

you will need to configure it by editing the sshd_config file in the /etc/ssh directory.

First, make a backup of your sshd_config file by copying it to your home directory, or by making a read-only copy in /etc/ssh by doing:

sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.factory-defaults sudo chmod a-w /etc/ssh/sshd_config.factory-defaults

Creating a read-only backup in /etc/ssh means you'll always be able to find a known-good configuration when you need it.

Once you've backed up your sshd_config file, you can make changes with any text editor, for example;

sudo gedit /etc/ssh/sshd_config

runs the standard text editor in Ubuntu 12.04 or more recent. For older versions replace "sudo" with "gksudo". Once you've made your changes (see the suggestions in the rest of this page), you can apply them by saving the file...

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If you have ever worked with a Linux server before, then you probably know the pain of setting up a new SSH user(for those who doesn’t know what is ssh – it serves as an application to login to remote computers as users). It is not the most difficult thing in the world but doing it over and over again is not worth your time – and it’s boring!

So let’s do some bash magic ( or scripting) and make our life a bit easier.

## What can it do?

Before diving into the setup, take a look at the useful features it can do for you :

It will add a new user to the remote system. It will install sudo if it does not already exist. It will add the newly created user to the sudoers list. It sets up passwordless login for the new user. Optionally disables the root login from ssh configuration after setting up the new user (recommended).

Note: You need root access to the server for the script to work

Follow the instructions given below step by step to ensure...

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This is simple. Just create a new user with it's home directory set to the one you need him to have access to (this command must be run under sudo or in root shell):

adduser --home /restricted/directory restricted_user

This will create an user restricted_user, the directory /restricted/directory and then permissions on the directory will be set so the user can write to it. It won't have an ability to write to any other directory by default.

If you have the directory already, you can run adduser command with a --no-create-home option appended and set permissions manually (also with root privileges), like:

chown restricted_user:restricted_user /restricted/directory chmod 755 /restricted/directory

If you need to make even world-writable directories unaccessible for this user, there are two variants.

1) If you want to provide an interactive shell session to the user, then consider following this manual on creating a chroot jail (in your...

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SSH, or Secure Shell, is a protocol used to securely log onto remote systems. It is the most common way to access remote Linux and Unix-like servers, such as VPS instances. In this guide, we will discuss how to use SSH to connect to a remote system I’ll be logged in as root.


Setup SSH server on Ubuntu 14.04


Step 1 – Update repositories.

root@mail:/# apt-get update

root@mail:/# apt-get upgrade

Step 2 – Install SSH Server

root@mail:/# apt-get install openssh-server

Basic Configuration

Step 3 – After installation I will show how to configure ssh server. Open ssh config file with the following command:

root@mail:/# nano /etc/ssh/sshd_config

Step 4 – If you want to change ssh port you have to find ‘Port’ line and change the number of the port. For example I will change to 22222.

Port 22222

Step 5 – I will set max login attempts to be 3. After 3 wrong login attempts you will disconect....

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When you work with a Git repository, your project may be actively modified by a lot of people. Some of them may not be trustworthy as they may be new employees or something like that. In this case, if they need to do git pull in the server to update the changes of a commit in your production server, you may not want that everybody knows the password of the repository. Another case where you don't want to provide the password of the repository everytime you do git pull or git clone, are automatized deployments.

That's why the the "deployment keys" feature exist in Gitlab, A deploy key is an SSH key that is stored on your server and grants access to a single Gitlab repository. This key is attached directly to the repository instead of to a personal user account. In this article, we'll show you step by step how you can automatize the deployment process of your project hosted on Gitlab.

1. Find or create an SSH Key for your server

The first thing that you need to...

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This site is running on a small VPS with Ubuntu 12.04 Server. The only way to access the server is using SSH. So it is very important to make remote SSH login security. In this tutorial, I’m going to show you what I was doing on my Ubuntu Server to deal with the problem.

Tutorial Objectives:

Secure SSH Login on Ubuntu VPS Enjoy!

1. Disable SSH Login as Root

It’s not a good idea to login your Ubuntu Server remotely as root user, because anyone can attempt to access your system by brute force the root password.

To disable root login, edit the configuration file by running blew command:

vi /etc/ssh/ssh_d.config

Find out the line which says PermitRootLogin yes and change it to PermitRootLogin no.

You’ll need to press i on your keyboard to start editing, press ESC to exit editing. Then press : followed by wq and then press Enter. This will save the file.

2. Add a user for SSH Login

You need to create a new user for remote ssh...

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SSH server allows users to

connect remotely

in a secure way and allows access to file transfers. Installation of the SSH server on Ubuntu requires the use of command 'sudo aptitude install ssh' and through the Login ID and the password reported in Ubuntu , one can have

encrypted

remote access. To connect, the

command line

must be used and the server can be accessed from

Windows

through open source clients such as PuTTY and WinSCP. SSH server can be installed through a

proxy

server after the package connect-proxy gets installed.



An SSH server allows you to remotely access your machine. You'll have access to the remote console (equivalent to telnet, but secure) and the ability to transfer files.

Installation

The easiest way is to use: sudo aptitude install SSH You can now connect remotely in a secure way. Use the login/password of users reported in Ubuntu.

Connection


SSH through a...

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