ArchiveMay 2011

Who Is On My Wifi Version 1.1.1

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Who Is On My Wifi version 1.1.1 was released this morning. It contains the following changes. -Fixed bug being too restrictive with private IP Address 172.16-30.x.x What this means is that there was a bug for users who tried to use an IP Range of for example 172.18.x.x or 172.29.x.x. It was only allowing 172.16.x.x. This is now working properly in the newest version and will allow any IP Range...

What is PING? And what does it do?

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The trusted PING command that has been available for years used to be the de-facto standard for seeing if a computer was up and running or if it was down. Simple example of how to use PING. In the following example, I have 2 computers connected to my computer network. The first is a computer at IP Address 192.168.1.102.  It is connected to the network and is currently powered on. The 2nd computer...

Why do computers need both MAC Addresses and IP Addresses?

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We know from previous posts that each computer has both an IP Address and a MAC Address assigned to it. But, why is this? If every computer in order to communicate with each other needed to be physically connected to each other, all networks either would become complicated very quickly or they would stay small. Imagine if in order to go to google.com you had to have a physical wire connecting...

What is the difference between an IP Address and a MAC Address?

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What is the difference between an IP Address and a MAC Address? What is an IP Address? An IP Address is a numeric representation of a device (computer, game console, etc.) on a computer network that uses TCP/IP to communicate (the logical connection of most of the internet). What is a MAC Address? A MAC Address is a numeric representation of a device (computer, game console, etc.) on a computer...

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