"firewall" tag
The cop's patrolling

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….

Marching packets

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…

Oops, am under attack, again!

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…

It's time we file

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…

Syn Flooding

SYN Flooding using SCAPY and Prevention using iptables

DoS (Denial of Service) attacks against Web services make them unavailable for legitimate users, affecting the website owner’s potential business. These involve intentional consumption of network, CPU and memory resources. In this article,…

Get in the ring!

Locking Horns: Fedora 15 ‘Lovelock’ v/s Ubuntu 11.04 ‘Natty Narwhal’

The two titans of the free software operating system arena, Fedora and Ubuntu, usually time their distribution releases a few days apart. This makes the competition between the two fiercer than it would…

Network monitoring time

Quick Setup Guide to Network Monitoring using Zenoss Core

Today’s businesses demand 24×7 uptime of IT infrastructure. To meet this need, a number of technologies are used, which include failover, clustering, redundant devices and high availability. Despite having more fault-tolerant and rugged…

The place for Network Security Monitoring

Best Practices in Network Security Monitoring

This article details the best practices organisations can follow to strengthen their network monitoring procedures, and also talks about a few FOSS products that help achieve this. It is imperative for an IT…

A Recap

Advanced Nmap: A Recap

This final article in the series consolidates information from the previous articles, looks at NMap’s future possibilities, and at the new tools from the development team. Beginning its life as a simple port-scanner,…

Securing Database Servers

Securing Database Servers

With the ever-expanding data requirements for Web applications, database administrators often configure security parameters at the OS and database layer. Unfortunately, administrators seldom consider implementing security at a network layer to protect the…

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