Author Archive


In this article i am going to show you how to create Digital certificate using openssl command line tool.we will also learn how to generate 4096 bit Private key using RSA Algorithm and we will also learn how to create self signed ROOT CA Certificate through which we will provide an Identity for ROOT CA.
We will learn how to generate an another 4096 bit Private key which will be used to generate our subordinate CA which will used for actual signing.We will also learn how to request a certificate for subordinate CA. We will also also learn how to decode certificates on your own computer, run this OpenSSL command.

I will show you how to check a certificate and key before applying them to your server.We will learn to Check the SSL key and verify the consistency.

We will also learn how to Check a certificate and return information about it (signing authority, expiration date, etc.).Also see how to Verify the CSR and print CSR data filled in when generating the CSR.

(more…)

Advertisements

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 192.168.0.254 and domain name is xyz.com

(more…)


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 192.168.0.0 255.255.255.0

Gateway Should be 192.168.0.254

DNS Sever Should be 192.168.0.254

Domain Name will be xyz.com

Range from 192.168.0.10- 192.168.0.100

DNS Configuration on Linux.

NIS Server Configuration on Linux.

Apache Web server Configuration on Linux.

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

(more…)


Being a blogger the most important challenge is to bring traffic to your blog and which helps you to be a successful blogger.There are so many bloggers who are good in content writing,their contents are also original but due to lack of knowledge of few important search engine optimization techniques they remain behind even after so much of hard work. always remember seo is not any magic it is just the most efficient way to communicate with search engines. SEO is all about telling the internet what your site is actually about and what for what type of audiences your are writing.Keeping overall seo in my mind I am writing this blog. After Reading this one article you will be able to optimize your blog in deficient way although it is not everything. I have tried my best to include all seo related important topics in this one blog.

(more…)


Here I am going to Introduce Asymmetric encryption decryption technology with an example lab in Redhat Enterprise Linux.
So I will show you how to create Private key and how to create Public Key.Also we will learn how to encrypt a file using Publick Key
and How to Decrypt it using Private key. So Basically We use Public Key for Encryption and Private key For Decryption.We will also learn how to password protect the Private key and how to remove the password from private key.I have used openssl command line tool to perform all this private key public key encryption decryption Lab. (more…)