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admin on Thursday, October 15th, 2009 |
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The Computer is a very complicated device we use for our every day comfort and the importance of some of its numerical aspects is sometimes neglected. For example: a different number is given to each computer when its user goes online or when it is part of a network. This number is the IP address and knowing about it is like knowing where you live?
What’s my IP and what do its numbers stand for?
IP stands for Internet Protocol and the address is formed from 4 numbers separated by periods. The IP address format is a 32 bit numeric one and each number can be from 0 to 255. The IP address consists of two parts: first one represent the network number and it is similar for more than one user (like the number of a street) and second represents the host name which is different for each user (like the house number). To increase the number of available IP addresses within big networks with a lot of users or small networks with few hosts, the address is divided into 4 classes (A, B, C, and D)
Having an IP address it’s like having a last name in a network. To identify a computer in a network (LAN-local area network, WAN-wide area network or on the Internet) it has to have an IP address. This number is similar to a phone number or to a zip code. It is unique and without it the device or computer can… Read the rest
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admin on Saturday, October 10th, 2009 |
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People have more flexible time due to wireless network. Thanks to the invention of wireless. People can now work from home while taking care of their kids or doing house works. No more stress from traffic jam anymore. Is this great?
Well, there is something you should realize. Working from home while using a wireless local area network (WLAN) may lead to theft of sensitive information and hacker or virus infiltration unless proper measures are taken. As WLANs send information over radio waves, someone with a receiver in your area could be picking up the transmission, thus gaining access to your computer. They could load viruses on to your laptop which could be transferred to the company’s network when you go back to work.
Believe it or not! Up to 75 per cent of WLAN users do not have standard security features installed, while 20 per cent are left completely open as default configurations are not secured, but made for the users to have their network up and running ASAP. It is recommended that wireless router/access point setup be always done though a wired client.
You can setup your security by follow these steps:
1. Change default administrative password on wireless router/access point to a secured password.
2. Enable at least 128-bit WEP encryption on both card and access point. Change your WEP keys periodically. If equipment does not support at least 128-bit WEP encryption, consider replacing it. Although there are security issues with WEP, it represents minimum… Read the rest
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admin on Friday, October 9th, 2009 |
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There has been a lot of talk recently about Google Talk and how there are serious privacy concerns with the new application.
The biggest concern seems to come with the ability to search and share multiple computers with one account. In other words, you could use a single desktop search account to search, index and allow you to share files between your desktop and laptop for example.
But are these concerns grounded in truth? Is there really a privacy issue here?
I downloaded and installed the new Desktop Search beta the other day. It has some interesting new features such as the ability to remove panels from the sidebar and dock them anywhere you like on your desktop.
And there are several more panels available to let you do anything from manage what is indexed, to passing time by playing games.
One of the coolest features is its ability to reach beyond the desktop it is on to do a variety of things. Now, I can play tic tac toe with co-workers, or even friends around the world.
But the biggest, and most troubling update to some is the ability to remotely index files, as well as share them using Google servers to temporarily store the items.
By turning this feature on you give Google the right to store your files for up to 30 days. Therein lies the crux of the issue ? there seems to be no way around this 30 day requirement.
All I have to… Read the rest