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Showing posts with label Software. Show all posts
Showing posts with label Software. Show all posts

Monday, November 29, 2010

How To Get Rid Of Cookies?

When you visit some website then information about you and the pages you have visited gets stored in HTTP cookies or simply cookies.

What Are Web Cookies?

Cookies The information sent by a website or web server about you to your browser is stored in cookies. Whole of data is stored in your hard disk.

Authenticating sessions, tracking sessions with websites that need log-ins and maintaining preferences like page layout, page size and other features are stored in cookies but the main purpose of cookies is to differentiate users from each other and remembering them. For accessing website’s services, cookies also remember the information like usernames and passwords. Cookies are not executable codes but text files only. Cookies are NOT:

• Spyware or virus

• Only used for advertising purposes

• Causing abusive online ads or pop ups

• Causing spam

As cookies contain important information so these are prone to Cross-site scripting or exploits like XSS and hijacking of cookies through packet sniffing is also possible.

Other use of cookies

All the preferences from choosing language to number of search results per page are stored in cookies. Also information about previously visited websites is also stored in cookies. Due to increase in malicious software and spyware, privacy of cookies has become a concern.

Security and privacy concerns

The web server sends cookies back and forth when you browse any website using cookies. As these cookies contain sensitive information like passwords and usernames which can be intercepted easily and data can be used for illegal means also. Although in modern browsers you can actually accept or reject cookies. Also you may set your browser to automatically reject cookies if you are much concerned about your private data. However some websites may not work properly if you disable cookies all the time. So the best option is to get rid of cookies each time you are done surfing.

Getting rid of cookies

You don’t need to download any kind of software as it is easier to remove cookies. Different browsers and user accounts store cookies differently. So to get rid of cookies you need to open each browser in each account. You can remove cookies if you are using internet explorer by following means:

1. After opening Internet Explorer, go to tools menu and make sure only one instance of the program is running.

2. Click on “Internet Options”.

3. Click “Delete cookies” on general tab.

4. After that click OK.

You can also do this by right clicking Internet Explorer icon and selecting properties and then following step 3 and 4 to delete cookies.
In case of Firefox, you can do following:

1. After opening Firefox click on “Tools” menu.

2. Select “Options”.

3. Click on “Privacy tab” and then click on “Clear Private Data” button.

4. Make sure you select the check box for cookies after a small menu appears. After that click on OK.

To automatically delete cookies and private data, you can press CTRL+SHIFT+DEL in Firefox. This will remove all private data and cookies when you close the browser. By following ways, you can do this:

• Go to tools and then click Options.

• Click on privacy tab and click on the box that shows “Always clear my private data when I close Firefox”.

• Then click on settings and see if check box of cookies is checked.

To access secure connections you may also avoid shared or public computers. If not then clear the cookies after surfing. You may also request the owner to remove cookies if the access is restricted. You need to be careful as hackers can easily steal cookies and use them for illegal purposes.

Thursday, July 29, 2010

What Is A 4G Network?

The fourth generation of the wireless networks is called a 4G network. Although it is still in its development stage, various cell phone and related technology companies are actively researching on this technology. The main aim of the research is to ensure that a secure and comprehensive Internet Protocol solution is developed which would have much faster speeds as compared to the older generation networks.

During the 1980s, the 1G network or the first wireless network was developed. In the early 1990s, the 2G network was introduced. The 2G network had the ability to allow more transmissions per communication channel. In the late 1990s, the 3G network was researched upon and developed and during early 21st century it had been implemented in various countries.

Providing higher quality of service is the main aim of the 4G network. The other priorities include information exchanges, better reception and less dropped data. The standards of the present networks are calculated by the ITU or International Telecommunications Union and it had stated that the present networks need to have an improved multimedia message service which includes video services also. A minimum of 100 megabits per second of data rate is recommended by the ITU if a user is moving at very high speeds and one gigabit per second of data rate if a user is stationary. Interactive roaming between various networks is also recommended by the UTI.

There has been an establishment of various groups who work on developing the 4G network. One of the options recommended by these groups is WiMax which is a much faster version of WiFi networks. The packet-based information exchange which is based upon standard IP technology is planned to be utilized too. So, this could be the fastest mobile communication method.

However, there should be development and implementation of smart antennas in order to make an efficient 4G network. A number of methods to transmit data were created with the advent of 2G and 3G networks. The 4G network can utilize these technologies. But standardized antennas are preferred by the ITU and other working groups. Spatial multiplexing is one of the techniques that have been recommended to order to achieve this. In this type of multiplexing, a single receiver and transmitter system is linked to a series of antennas. The space-time exchange rate of data can be speeded up as these antennas have the capability to work simultaneously.

It took a decade for the overall implementation of 3G around the world. However, a much more timely and effective rolling out of the 4G network is planned by the ITU. It is expected that the 4G network will revolutionize the wireless communication systems due to its improved video and technology and much faster speeds. The other factors that are being considered regarding the development of 4G are security and stability.

Tuesday, July 27, 2010

God In Software Industry

Brahma -- Systems Installation

Vishnu -- Systems Administration & Support

Lakshmi -- Finance and Accounts consultant

Saraswati -- Training and Knowledge Management

Shiva -- DBA (Crash Specialist)

Ganesh -- Quality Assuarance & Documentation

Narada -- Data transfer

Yama -- Reorganization & Downsizing Consultant

Chitragupta -- IDP & Personal Records

Apsaras -- Downloadable Viruses

Shakuni -- Annual appraisal & Promotion

Valmiki -- Technical Writer (Ramayana Sign off document)

Krishna -- SDLC ( Sudarshan Wheel Development Life Cycle )

Dharmaraj Yudhishthira -- ISO Consultant (CMM level 5)

Arjun -- Lead Programmer (all companies are vying for him)

Abhimanyu -- Trainee Programmer

Draupadi -- Motivation & Team building

Devas -- Mainframe Programmers

Surya -- Solaris Administrator

Rakshasas -- In house Hackers

Ravan -- Internet Explorer WWWF

Kumbhakarnan -- Zombie Process

Lakshman -- Support Software and Backup

Hanuman -- Linux/s390

Vaali -- MS Windows

Sugreeva -- DOS

Jatayu -- Firewall

Dronacharya -- System Programmer

Vishwamitra -- Sr. Manager Projects

Bhima -- MAINFRAME LEGACY SYSTEM

Duryodhana -- Microsoft product Written in VB

Karna -- Contract programmer

Dhrutarashtra -- Visual C++

Gandhari -- Dreamweaver

100 Kauravas -- Microsoft Service Packs and patches