Question: How do I allow only certain users to SSH my Linux server?

Contents

How do I restrict access to Linux server?

Resolution

Create the restricted shell. …
Modify the target user for the shell as restricted shell. …
Create a directory under /home/localuser/ , e.g. programs. …
Now if you check, the user localuser can access all commands which he/she has allowed to execute.

How do I setup a restricted ssh user for port forwarding?

How to create a restricted SSH user for port forwarding?

execute shell commands.
access files or upload files to the server.
use the server as proxy (e.g. webproxy)
access local services which were otherwise not publicly accessible due to a firewall.
kill the server.

Can you do ssh to the same Linux server with different user?

The same ssh public key can be used to as an authentication key for multiple users on the same system as well as multiple systems. Simply used ssh-copy-id to send your public key to the remote host.

How do I restrict users in Linux?

However if you only want to allow the user to run several commands, here is a better solution:

Change the user shell to restricted bash chsh -s /bin/rbash <username>
Create a bin directory under the user home directory sudo mkdir /home/<username>/bin sudo chmod 755 /home/<username>/bin.

How do I restrict access to SSH?

HOWTO: Restrict ssh access by IP Address and/or username

Edit the /etc/hosts. allow file to include these lines, assuming your machine is on the 192.168. …
Edit your /etc/hosts.deny file to include this line: sshd,sshdfwd-X11:ALL.
These lines refuse SSH connections from anyone not in the IP address blocks listed.

How do you add a user in Linux?

How to Add a User to Linux

Log in as root.
Use the command useradd “name of the user” (for example, useradd roman)
Use su plus the name of the user you just added to log on.
“Exit” will log you out.

How do I enable AllowTcpForwarding?

Configure a Secure Shell setting on the remote server to allow port forwarding. Change the value of AllowTcpForwarding to yes in the /etc/ssh/sshd_config file. Restart the Secure Shell service.

How do I SSH to a specific user?

Allow SSH Access to a user or group

Meaning – add the word “AllowUsers” and hit the Tab key and then specify the username. You can also specify more than one user as shown below. This setting will allow all the members of the “root” group to ssh to the Linux server.

How do I SSH to a user?

To use the public/private key method for client authentication by a SSH server, create a user and generate/import a public/private key pair on the device which is a SSH client. Then create the same user at the SSH server and copy the public key (or fingerprint) generated/entered at the SSH client to the SSH server.

The su command:

su command is used to switch the current user to another user from SSH. If you are in the shell under your “username”, you can change it to another user (say root) using the su command.

How do I see users in Linux?

How to List Users in Linux

Get a List of All Users using the /etc/passwd File.
Get a List of all Users using the getent Command.
Check whether a user exists in the Linux system.
System and Normal Users.

How do I make a user read only in Linux?

1 Answer

Create the user useradd readonlyuser.
Enter its password if you want password auth, otherwise, setup SSH keys passwd readonlyuser.
Give Read and Execution permission to the directory Owner and all its sub-folders and files chmod -R o+rx /var/www/html/websitenamehere/

How do I check user permissions in Linux?

How to View Check Permissions in Linux

Locate the file you want to examine, right-click on the icon, and select Properties.
This opens a new window initially showing Basic information about the file. …
There, you’ll see that the permission for each file differs according to three categories: