Sysadmins
Bandwidth Throttling with NetEM

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…

The art of crafting

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…

Your First Site-to-Site VPN

Guard Your Network with IPCop, Part 5: Your First Site-to-Site VPN

The first article in this series discussed the basic installation and configuration of IPCop 1.4.21. Subsequent articles covered six important add-ons: Advanced Proxy, URL Filter, Update Accelerator, Calamaris, Block Outgoing Traffic and Zerina….

It's so big!

Impact of Big Data on Enterprise Integration

This article explains the new challenges in enterprise integration caused by the advent of big data, and presents some approaches to overcome them. Big data is the latest buzz-word in the industry. At…

About time we guarded this network!

Guard Your Network with IPCop, Part 4: Configuring OpenVPN with Zerina Add-on

The first article in this series discussed the basic installation and configuration of IPCop 1.4.21. Subsequent articles discussed five important add-ons used to enhance IPCop’s functionality: Advanced Proxy, URL Filter, Update Accelerator, Calamaris…

Web Exploitation

Cyber Attacks Explained: Web Exploitation

Websites are no longer merely about having an “Internet presence” today, but are also used for commercial transactions and to transfer sensitive data. Such wide usage helps crackers gain more knowledge on vulnerabilities…

SPEED!

Web Acceleration with Varnish 3.0

In this article we’ll setup a ready-to-deploy WordPress-compatible Varnish service as our HTTP reverse caching proxy, and have it cache the desktop and mobile themes separately. Our original WordPress recipe had a place…

Speed up your cloud

Speed up Your Cloud with Memcached

Is your website running into performance bottlenecks? Does the database or backend feel like a really expensive resource, even though you’ve got a huge cluster set up to improve parallel processing? Read on…

Blocking outgoing traffic

Guard Your Network with IPCop, Part 3: Block Outgoing Traffic

The first article in the series discussed IPCop 1.4.21, its basic installation and configuration. Though an excellent firewall distro, basic IPCop has limited functionality. To enhance it, various add-ons are available. We covered…

Security Assessment Tools

Top 10 Security Assessment Tools

Modern data centres deploy firewalls and managed networking components, but still feel insecure because of crackers. Hence, there is a crucial need for tools that accurately assess network vulnerability. This article brings you…

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