mod_rewrite, a beginner’s guide (with examples)

Until recently, I only had the vaguest of ideas of what mod_rewrite was, and I certainly had no clue about how to use it. So, when I started designing this site, I decided to delve into the wonders that are the mod_rewrite Apache [...]

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Protecting Your Data: A Guide to Windows Firewall

Introduction to Windows Firewall
The introduction of high-speed Internet connectivity has created a powerful and extraordinary computer networking experience. This newfound burst of bandwidth has launched new innovations in information exchange, media access, and other advanced computing experiences. Unfortunately, this technology has also created a very accessible conduit to the internals of your computer. Using these [...]

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Will an nmap Operating System scan work through a firewall?

From the mailbag, Jesse C. writes:
I have been assigned a project within my organization to perform OS Fingerprinting on subnets. What I find is that end-users that do not use Windows Firewall (have it disabled or not installed), I am able to detect their OS with no problem. The problem lies that many new users [...]

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MPLS Overview

Multi-Protocol Label Switching (MPLS) defines a mechanism for packet forwarding in network routers. It was originally developed to provide faster packet forwarding than traditional IP routing, although improvements in router hardware have reduced the importance [...]

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MPLS – What is ?

Short for Multiprotocol Label Switching, an IETF initiative that integrates Layer 2 information about network links (bandwidth, latency, utilization) into Layer 3 (IP) within a particular autonomous system–or ISP–in order to simplify and improve IP-packet exchange. MPLS gives network operators a great deal of flexibility to divert and route traffic around link failures, congestion, and [...]

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How To Find Your IP and MAC Addresses On Windows XP | 2000 | NT

Follow these steps to quickly find the Internet Protocol (IP) and Media Access Control (MAC) address of a computer running Windows XP, Windows 2000, or Windows NT.
Difficulty: Easy
Time Required: seconds
Here’s How:

Click the Start menu button on the Windows taskbar.
Click Run… on this menu.
Type cmd in the text box that appears. A command prompt window launches [...]

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MTU – What is ?

Definition: The MTU is a limit, expressed in bytes, on the size of data sent over a network. It is the maximum size of a single unit (e.g., an Ethernet frame) of digital communications.
MTU sizes are properties of physical network interfaces. The MTU for Ethernet, for instance, is 1500 bytes. Some types of networks (like [...]

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Multihoming – What is ?

Definition: Multihoming is the configuration of multiple network interfaces or IP addresses on a single computer. Multihoming is intended to increase the reliability of network applications but it does not necessarily improve their performance.In traditional multihoming, you install a second hardware network adapter on a computer that normally possesses only one. Then, you configure both [...]

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Guide To ARP, IARP, RARP, and Proxy ARP

When I first started studying for my CCNA years ago, one of the (many) things that confused me was ARP. Or rather, what ARP did as opposed to Reverse ARP, Inverse ARP, and Proxy ARP! One book would mention ARP without mentioning the other variations, one would mention RARP but not Proxy ARP, and so [...]

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BackTrack – Comprehensive Security Penetration Linux Distro Suite

The are a couple of things that are essential to any hacker’s walk of life. To name a few, there’s the ubiquitous flash drive for data transfer. You have the crossover cable for even faster data transfer. There’s the WiFi antenna for high gain and strong amplification. Possibly, you might find a video capture card [...]

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