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Linux Firewall: Executing Iprules Using PHP

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A firewall keeps the network secure by analysing packets and determining whether they should be allowed through or not. This article shows how to...

Deploy a DNS Server in a Secure Way

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BIND (Berkeley Internet Name Domain) is one of the more widely used DNS servers. This article guides readers on how to deploy a BIND...

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

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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...

Guard Your Network with IPCop, Part 4: Configuring OpenVPN with Zerina...

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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...

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

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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....

Cyber Attacks Explained: DNS Invasions

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We often read about defaced websites whose pages get changed to some malicious content. How do hackers do it and how do we protect...

WordPress on Nginx, Part 1: Preparing VPS the Debian Way

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In this first part, we deal with the LEMP (Linux, Nginx, MySQL, PHP) stack recipe and set up the basic server after installing the...

Guard Your Network with IPCop, Part 2: Add-ons

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A basic installation of IPCop provides minimum firewall functionality such as a proxy, compatibility with various Internet connections, port forwarding, IPSec VPN, etc. To...

Cyber Attacks Explained: Network Sniffing

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In earlier articles in this series, we have explored denial of service attacks and packet spoofing. This month, let us focus on a wider...

Guard Your Network with IPCop, Part 1: Installation Basics

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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...