How do I restrict ssh access to specific users?

How do I restrict ssh access to specific users?

Restrict certain users log onto a system via SSH server

1. Step # 1: Open sshd_config file. # vi /etc/ssh/sshd_config.
2. Step # 2: Add a user. Only allow user vivek to login by adding following line:
3. Step # 3: Restart sshd. Save and close the file.

How do I restrict ssh?

Deny SSH access to a user or group Don’t use Space-bar. Press Tab key and add the username. Similarly, to deny SSH access to multiple users, specify the usernames with space separated as shown below. Save and quit the ssh config file.

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

How to create a restricted SSH user for port forwarding?

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

How do I disable ssh access in Linux?

Disable SSH Root Access Open the file ‘/etc/ssh/sshd_config’ in any text editor and search for the string ‘PermitRootLogin’. Uncomment the line and if it has any other value, set the value to ‘no’. Now try logging in to localhost with user ‘root’. It will also show the error ‘Permission Denied’.

How do I enable SSH access in Linux?

Enable root login over SSH:

1. As root, edit the sshd_config file in /etc/ssh/sshd_config : nano /etc/ssh/sshd_config.
2. Add a line in the Authentication section of the file that says PermitRootLogin yes .
3. Save the updated /etc/ssh/sshd_config file.
4. Restart the SSH server: service sshd restart.

How to restrict or allow SSH only from certain users?

[root@node3 ~]# vim /etc/ssh/sshd_config # Turn this option to ‘no’ to deny password based login for public PasswordAuthentication no # Add below content to allow password based login from subnet 10.0.2.* Match User deepak Address 10.0.2.* PasswordAuthentication yes

Who is allowed to SSH into my Linux server?

Restart SSH service to take effect the changes. Now, the user sk and all the members of the “root” group are allowed to ssh into your Linux server. The other users (except sk and members of “root” group) are not allowed to access the system via ssh.

How to allow or deny SSH access in Linux?

Allow Or Deny SSH Access To A Particular User Or Group In Linux. 1 1. Allow SSH Access to a user or group. To allow SSH access for a particular user, for example sk, edit sshd_config file: Press “i” to enter into 2 2. Deny SSH Access to a user or group. 3 3. Disable SSH Root Login.

Is it safe to allow remote SSH access?

It adds zero obstacles for people looking to break your network, who are using automated port scanners and don’t care what port it’s running on. If you want to bolster security on a system that’s allowing remote internet-based inbound SSH, control your users in the sshd_config as @Anthon indicated, and then also implement security directly in PAM.