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Root25
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An introduction to #Cryptography   & #Steganography plus a history of first usage of Steganography for hiding messages. #Informationsecurity   #infosec   #security   #computerscience   #IT    #Technology   #history  #root25.us

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Introduction to Cryptography and Steganography
Cryptography is an interesting art. Bear with me and you will see. In this post I will tell you a brief history of Cryptography and Steganography. Next post will be more technical. Long long time ago ancient dynasties relies on different methods of communic...

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Network Address Translation (NAT)
Public IP address are rare to find, specially classes A,B & C. Recently IP version 6 introduced to address this problem. However IPV6 adoption is slow and can't practically be helpful in near future. To address this problem network administrators usually us...

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Domain Name Service (DNS) & DNS Security
In previous lesson we discussed about  IP addresses . Remembering the IP addresses is difficult. It's not easy to remember all IP addresses that we need for our daily use.  Domain name service (DNS)  allows us to use "easy to remember" names instead of memo...

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Network Ports
As we learned in the  previous lesson ,  IP  addresses uniquely identify computers. Most of the times each computer has more than one services. For instance a computer can be a web server and a file server in the same time. For addressing this in addition t...

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TCP IP Networking Basics
Visualization of routing path in internet ( Opte Project ) Basically computers are connected to each other through networks, we can divide the networks into two main categories of : LAN (Local Area Networks)  : LAN networks used for connecting computers in ...
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