Gary Sims

Gary has been a technical writer, author and blogger since 2003. He is an expert in open source systems (including Linux), system administration, system security and networking protocols. He also knows several programming languages, as he was previously a software engineer for 10 years. He has a Bachelor of Science in business information systems from a UK University.

Advanced Uses For Nmap

Advanced Uses For Nmap

Following on from the first part in this series, it is time to look at some of the more advanced features of nmap.

Beginner’s Guide to Using nmap

Beginner’s Guide to Using nmap

nmap is a network scanning tool which can be used for a whole variety of network discovery tasks including port scanning, service enumeration and OS fingerprinting.

Making eBooks using Calibre on Linux

Making eBooks using Calibre on Linux

Creating an ebook is not as difficult as you think. This tutorial shows you how to make ebook using Calibre on Linux. It should work in Mac and Windows too.

Using Wireshark on Ubuntu

Using Wireshark on Ubuntu

Wireshark is a powerful network analyser which can be used to sniff the data on a network as well as analyze network issue. Learn how to use it in Ubuntu.