Ubuntu Server 14.04

How to Set Up a Firewall with UFW on ubuntu 14.04

August 21st 2021, 5:40
Uncomplicated firewall (UFW) provides easy-to-use interface for people unfamiliar with firewall concepts. It provides a framework for managing netfilter as well as the command-line interface to manipulate the firewall. With its small command set and plain English parameters, UFW makes it quick and easy to understand and set up firewall...
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How to Install and Configure fail2ban on ubuntu 14.04

August 21st 2021, 2:23
Step 1 : Install and Configure fail2ban sudo apt-get install fail2ban After installation, the fail2ban daemon will start up and be configured to automatically start at boot-time. Configuring fail2ban is simply a matter of creating a configuration file. But, you shouldn't use its default config file (/etc/fail2ban/jail.conf). The problem with...
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How to Setup DHCP Server in Ubuntu Server 14.04

August 21st 2021, 12:12
DHCP is a service used to automatically assign network configuration to client systems. DHCP can be used as a handy tool when you have a large pool of systems that needs to be configured for network settings. Plus, when you need to change the network configuration, say to update a...
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How to set a static ip address in Ubuntu Server 14.04

August 20th 2021, 5:33
When you install Ubuntu server, its network setting defaults to dynamic IP addressing, that is, the network management daemon in Ubuntu searches for a DHCP server on the connected network and configures the network with the IP address assigned by DHCP. Even when you start an instance in the cloud,...
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How to Change Hostname on Ubuntu 14.04

August 19th 2021, 12:31
How do you view your hostname? Step 1 : You need to use the hostname command or hostnamectl command hostname Step 2 : Output from the hostname command Setting the hostname Step 1 :Changing the hostname is fairly simple. To do this, we can use the hostnamectl command as root...
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How to set up ssh keys on ubuntu server 14.04

August 15th 2021, 4:14
Follow these steps to set up public key authentication: Step 1 : Change to the home directory with cd ~/ cd ~/ Step 2 : Create a .ssh directory if it doesn't already exist mkdir .ssh Step 3 : Create a file named authorized_keys under the .ssh directory touch .ssh/authorized_keys...
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How to Set permissions on files and directories on ubuntu server 14.04

August 15th 2021, 3:32
Viewing permissions Step 1 : Use the ls command to list the access permissions of files and directories. ls -l Step 2 : In each line, we see several fields of information. 1 : The permission strings 2 : The link count for the object 3 : The user that...
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How to Add User to Sudoers in Ubuntu Server 14.04

August 15th 2021, 12:54
Add User to Sudoers Step 1 : To give additional users access to sudo, all you would need to do is add them to the sudo group sudo usermod -aG sudo myuser Configure sudo Step 2 : User with sudo privileges access to everything, and that may or may not...
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How to Manage passwords and password policies on ubuntu server 14.04

August 15th 2021, 11:03
Set an expiration date on a user's password Step 1 : Type chage -l username command to display expiration date on a user's password. sudo chage -l myuser Step 2 : When creating user accounts, The chage command allows you to force a password change for a user when he...
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How to Manage Groups on Ubuntu server 14.04

August 15th 2021, 12:04
List all groups Step 1 : The /etc/group file contains information regarding the groups that have been created on your system. Go ahead and take a look at this file on your system: cat /etc/group Creating new groups Step 2 : The groupadd command allows you to create new groups....
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