Category: Technology

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Initialize Ubuntu Droplet in DigitalOcean

This is a simple instruction on how to initialize Ubuntu Droplet in DigitalOcean. We will use Ubuntu 16.04 32 bit in this case. We have to use a normal user instead of the root account. Normally the root account should be disabled. First, we have to add a user by executing the following command. Let’s assume …

Configure Linux Static IP Network Interface

Static IP configuration can be found in file /etc/network/interfaces. This applies to Debian or any derivatives such as Ubuntu. Edit the file /etc/network/interfaces using sudo command sudo pico /etc/network/interfaces Change the file content to be similar like below. Please ensure to look closely on iface eth0 section. You can change the IP address based on …

How to Disable Root Login in Ubuntu

It is better to disable root user login since allowing root user login is a major security concern in Linux system. You can use root login after logging in as another user. 1. Edit sshd_config file. sudo pico /etc/ssh/sshd_config 2. Search PermitRootLogin directive in that file and change PermitRootLogin to no. Example: # Authentication: LoginGraceTime 120 …

How to Install Security Updates in Ubuntu

You should install all available security updates in order to protect against unauthorised access to your Linux/Ubuntu box. The commands can be found in the following. sudo apt-get update sudo apt-get upgrade –show-upgraded Please ensure to enter your root password since you are using sudo command that gains super access to your Linux system.