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How to set up SSH on CentOS 7?
One CentOS 7 server with a sudo non-root user and SSH key, which you can set up by following this Initial Server Setup tutorial. A smartphone or tablet with an OATH-TOTP app installed, like Google Authenticator ( iOS, Android ). In this step, we’ll install and configure Google’s PAM.
What to do if 2FA is not working on CentOS?
At this point, anyone that attempts to log into the CentOS server, via SSH, will have to include a verification code from either the Authy or Google Authenticator app. Without a code, they cannot log in. Period. If you find 2FA not working, you might have to restart the server.
What do I need for two factor authentication on CentOS 7?
You’ll also need a user account with sudo rights capable of logging into the server via ssh. You’ll also need an authenticator app (such as Authy or the Google Authenticator ). And that’s all you need. This is where the process slightly varies from Ubuntu. With CentOS 7, you must first install a repository before you can install the necessary tool.
How to enable SSH root login in nano?
In order to enable logging in as root, we need to modify the main ssh configuration file “sshd_config” with a text editor of your choice. In our example, we will use nano as an editor. nano /etc/ssh/sshd_config. Find the following line in the file.
1 CentOS 7 system to act as an SSH server 2 A user with necessary permissions 3 Access to a command line (Ctrl-Alt-T) 4 yum utility (included by default) More
How to configure remote access using SSH?
Configuring CentOS Remote Access using SSH 1 Installing SSH on an CentOS System. In order for a system to accept SSH connections the system must first be running the SSH server. 2 Configuring the CentOS Firewall to Allow SSH Connections. 3 Using SSH on CentOS. 4 Copying files using SSH. 5 Disabling the SSH Server.
How to configure a static IP in CentOS?
Configuring a Static IP 1 First, find the name of the network interface you want to change using the network manager command-line tool. 2 To do so, open the network’s configuration file by typing the following: vi /etc/sysconf ig/network-scripts/ifcfg- [network_device_name] 3 A text editor with the network configuration opens.
How to configure a network as DHCP in CentOS?
To configure a network as DHCP (Dynamic Host Configuration Protocol), you need to set the IPv4 configuration settings to Automatic. 2. Before you exit out of the Network Manager, make sure to enable automatic connection for the network interface. 3. Select OK to save the changes.