How do I allow specific users in ssh?

How do I allow specific users in ssh?

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. Restart ssh service to take effect the changes.

How do I allow a specific IP in Firewalld?

Open Port for Specific IP Address in Firewalld First create an appropriate zone name (in our case, we have used mariadb-access to allow access to the MySQL database server). Next, reload the firewalld settings to apply the new change. If you skip this step, you may get an error when you try to use the new zone name.

How do you whitelist IP address in Linux?

How to whitelist IP address using CLI in CSF?

1. Login to your linux server using root or sudo user.
2. Go to the path /etc/csf/.
3. Inside the CSF directory, edit the file called csf. allow.
4. Add the IP address which you want to whitelist. Save the file.
5. Restart the firewall after adding the IP address.

How do I enable ssh through a specific IP?

Now, perform the following steps to configure the IP addresses with authorization to log in by using SSH:

1. Open the file /etc/hosts.allow file by using a text editor: vi /etc/hosts.allow.
2. Add an sshd line to allow the IP address of your choice to connect by using public SSH.
3. Save and close the file.

How do I allow a user to ssh in Ubuntu?

Enabling SSH on Ubuntu

1. Open your terminal either by using the Ctrl+Alt+T keyboard shortcut or by clicking on the terminal icon and install the openssh-server package by typing: sudo apt update sudo apt install openssh-server.
2. Once the installation is completed, the SSH service will start automatically.

How do I enable zone in Firewalld?

You activate a zone by binding a network interface or source IP address range(s) to it….

1. I also had to restart the service.
2. You can do this via firewall-cmd –permanent –zone=public –change-interface=eth0 (for example).

How do I allow an IP address in Linux?

Here are the commands to whitelist an IP address on your Linux server, both incoming and outgoing.

1. Example: How to whitelist IP address 192.168.0.1.
2. Step 1: Log into the server via SSH.
3. Step 2: Allow incoming connections from 192.168.0.1.
4. Step 3: Allow outgoing connections to 192.168.0.1.
5. Additional Options:

How do I whitelist an IP address in SSH?

How do I restrict IP address in Linux?

How to block IP address on Linux server

1. Step 1: Login as root user. Login to your server as root user ssh root@server-ip.
2. Step 2: Add new Iptables rule. Enter the following rule to block an IP address from accessing your server iptables -A INPUT -s IP-ADDRESS -j DROP.
3. Step 3: Saving Iptables rule. On Ubuntu:

What is ETC hosts allow?

The /etc/hosts. allow file is read first and is read from top to bottom. If a daemon-client pair matches the first line in the file, access is granted. If the line is not a match, the next line is read and the same check is performed.

How do I enable direct SSH on a non root?

CentOS / RHEL : How to Disable / Enable direct root and non-root user ssh login

1. Edit the /etc/ssh/sshd_config file with a text editor and find the following line: #PermitRootLogin yes.
2. Change the yes to no and remove the ‘#’ at the beginning of the line so that it reads : PermitRootLogin no.
3. Restart the sshd service:

How to allow an IP address for SSH connection?

We can control the SSH connection to a server by using the following files: How to allow an IP address for SSH connection? Step 1 : SSH to server as root user. Step 2 : Open /etc/hosts.allow file using your favorite text editor. sshd : 33.*.*.* sshd : 66.66.*.*

How to limit SSH access to specific clients?

69 You can limit which hosts can connect by configuring TCP wrappers or filtering network traffic (firewalling) using iptables. If you want to use different authentication methods depending on the client IP address, configure SSH daemon instead (option 3).

Is it possible to restrict SSH to root?

Here I will show you the steps to restrict ssh for ‘ root ‘ user but only from node2 (10.0.2.31) and ssh as root from all other hosts would be allowed on node3. In my previous article I shared the commands to check and list active ssh connections with examples.

How is SSH used to access remote servers?

Secure Shell protocol is abbreviated as SSH. It is a secure and most commonly using protocol to access remote servers. This protocol uses encryption while transferring data between two hosts.