Bandwidth Throttling with NetEM Network Emulation
NetEM (Network Emulation) provides functionality for testing protocols, by emulating the network properties of wide-area networks. This article describes the use of NetEM in benchmarking the performance of a Web application, simulating Internet-like…
Virtualisation Face-off: Qemu, VirtualBox, VMware Player and Parallels Workstation
In this article, we take a look at four of the most well known and commonly used virtualisation software for Linux. When it comes to virtualisation, Linux unarguably has more prowess and offers…
Cyber Attacks Explained: Packet Crafting
Protect your FOSS-based IT infrastructure from packet crafting by learning more about it. In the previous articles in this series, we explored common infrastructure vulnerability exploitation scenarios. This article takes a step forward…
Chrome OS: Good Gimmicks, But What Else?
I don’t own a Chomebook; and it’s been a couple of years since I’ve tried the Chrome OS — a pre-alpha release or something. Anyway, the new version came out yesterday. Most of…
Cyber Attacks Explained: Network Sniffing
In earlier articles in this series, we have explored denial of service attacks and packet spoofing. This month, let us focus on a wider hacking approach called network sniffing, which is very commonly…
Guard Your Network with IPCop, Part 1: Installation Basics
The classic version of IPCop 1.4.20, which was released on July 24, 2008, was immediately upgraded to the 1.4.21 ISO installer. The much awaited version 2.0 has been out since September 23, 2011….
Cyber Attacks Explained: Packet Spoofing
Last month, we started this series to cover the important cyber attacks that impact critical IT infrastructure in organisations. The first was the denial-of-service attack, which we discussed in detail. This month, we…
Storage Management using Openfiler, Part 4
In the previous article in the series on Openfiler, we discussed configuring RAID. Here, we will proceed with the installation and configuration of iSCSI. This article assumes that Openfiler 2.3 has been configured…
Cyber Attacks Explained: DoS and DDoS
With this article, we begin a new series on the major kinds of cyber attacks that weaken the IT security infrastructure within organisations. With the rapid spread of Internet technologies and applications, the…
Storage Management using Openfiler, Part 3
The first article of this series discussed basic installation and configuration; the second described some advanced Openfiler features including bonded interfaces and RAID 1 data storage, with some important setup instructions and troubleshooting…




