Archive for the ‘LINUX’ Category

In this tutorial i will show you how to configure DNS server in Linux. We will learn to configure zone file and reverse lookup zone file.We will also learn about dns packages and dns services.We will also learn to change the ownership of files which we need to change.I have used Virtualbox for configuring and testing this DNS lab.The operating system i used for DNS server is RHEL5 and the DNS Client machines is WindowsXP.

Learn More server configuration on Linux.

DHCP SERVER Configuration in Linux.

NIS Server Configuration on Linux.

Apache server Configuration on Linux


The ip address for DNS server is and domain name is



DHCP Server configuration in Redhat Enterprise Linux. In this tutorial we will learn how to configure DHCP Server on Linux.Then we will see how dhcp client machine will receive ip address from DHCP server.

Subnet and netmask should be

Gateway Should be

DNS Sever Should be

Domain Name will be

Range from

DNS Configuration on Linux.

NIS Server Configuration on Linux.

Apache Web server Configuration on Linux.

So let’s assign IP Address, defaultĀ  Gateway IP and domain Name and range as we have decided above.


In this article i will explain how you can encrypt your Linux hard drive or Linux Drive or Partition using LUKS.I will create a partition /dev/sda2 here and thenĀ  I will show you how to encrypt this partition using LUKS or you can say how to password protect this drive using LUKS.I will explain the complete procedure in few simple steps.So you need to just read each and every line carefully and you will be able to do this task easily.


This is my first tutorial on Firewall configuration in Linux using IPTABLES. In this tutorial we will learn how to use and configure iptables to secure any server or any network.We will learn to secure server and network infrastructure. Firewall is an integrated part of computer system or Network infrastructure designed to allow authorized communication and block unauthorized access.We will learn how to allow any specific ip using iptables and also learn how to deny any specific ip address.

.We will learn how to see list of iptables rules.

.We will also learn how to Flush iptables rules.

.we will also set default rules for firewall.

.We will learn to allow internal traffic on loopback device.

.We also learn how to allow established connections.

.We see rules to Lock all NULL Packets.

.We will also learn to Block XMAS Packets using Iptables.

This article is all about Linux System Administrator Interview question.Here i will discuss all the questions which mainly asked during Linux system admin interviews.I will highlight the questions which generally all Linux system admins have faced during his interview.