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Nov 28, 2010

How the Internet Works

Did you ever wonder how the Internet works? How does a router look like? What color does a IP packet have? How does a IP packet travel through firewall. All the answers and many more can be found in the Warriors of the net move. It is the prefect tool for introducing Internet to novice users. It helps the newcomers visualize how the Net works. 

Nov 20, 2010

Cisco Networking Glossary

Cisco Networking Glossary


5-4-3      rule
Stipulates that between stations on a LAN, there can be no more than five network segments connected, the maximum number of repeaters between the segments is four, and the maximum number of segments with stations on them is three.

1OBase2
An Ethernet standard that specifies a 10 Mbps baseband transmission over thin Ethernet (RG-58) cabling is l0Base2; the maximum transmission distance of any single segment is 185 meters, which is represented by the number two at the end of the specification.

1OBase5
An Ethernet standard that indicates a 10 Mbps baseband transmission over a maximum segment length of 500 meters; the type of cable used in this standard is called thick Ethernet or thicknet and uses RG-8 or RG-11 coaxial cable.

1OBaseT
An Ethernet standard that specifies a 10 Mbps baseband transmission over twisted-pair cabling; the maximum segment length is 100 meters.

Nov 5, 2010

How to disable AutoRun / AutoPlay in Windows

The purpose of Autorun

The main purpose of Autorun is to provide a software response to hardware actions that you start on a computer. Autorun has the following features:

Double-Click
Contextual Menu
AutoPlay

These features are typically called from removable media or from network shares. During AutoPlay, the Autorun.inf file from the media is parsed. This file specifies which commands the system runs. Many companies use this functionality to start their installers.

Default Behavior of Autorun and AutoPlay

Virus Infection due to Windows AutoRun Feature

There is a growing number of malware attacks targeting the AutoRun function in Windows and plug-in USB devices.

The key attack point for malware is the ‘AutoRun’ feature in Microsoft Windows operating systems (OS). AutoRun alerts computer users when a new device such as a memory stick is connected and is designed to help them choose what application should run with the new files.

“AutoRun is a really useful tool, but it is also a way to spread more than two-thirds of current malware..”

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