"firewall" tag

A Look at the Top Three Network Monitoring Tools

This article talks about a few important aspects of network monitoring, and compares three leading tools that are of great importance to IT administrators. In a well managed IT infrastructure, network monitoring acts…

Linux Firewall: Executing Iprules Using PHP

A firewall keeps the network secure by analysing packets and determining whether they should be allowed through or not. This article shows how to manipulate Iprules using PHP scripts. Linux has its own…

Deploy a DNS Server in a Secure Way

BIND (Berkeley Internet Name Domain) is one of the more widely used DNS servers. This article guides readers on how to deploy a BIND DNS server in a secure way by implementing three…

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….

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…

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…

Yet another kind of cyber attack, eh?

Cyber Attacks Explained: DNS Invasions

We often read about defaced websites whose pages get changed to some malicious content. How do hackers do it and how do we protect our infrastructure from them? This article is about how…

Preparing a Debian-based LEMP server

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

In this first part, we deal with the LEMP (Linux, Nginx, MySQL, PHP) stack recipe and set up the basic server after installing the required packages. It started off thus: The theme developer…

IPCop Add-ons

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

A basic installation of IPCop provides minimum firewall functionality such as a proxy, compatibility with various Internet connections, port forwarding, IPSec VPN, etc. To convert it into a complete Unified Threat Management (UTM)…

Cyber Attack

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…

All published articles are released under Creative Commons Attribution-NonCommercial 3.0 Unported License, unless otherwise noted.
Open Source For You is powered by WordPress, which gladly sits on top of a CentOS-based LEMP stack.

Creative Commons License.