Difference between HTTP and HTTPS.

Difference between HTTP and HTTPS. 

Http or the hypertext transfer protocol is something we use when we access the internet. Though we seldom notice it if at all, it plays a very essential role. Http defines the methodology and rules of transporting data from the servers of the site we like to view down to our computer and vice versa. To most of us non-technical people, this should no longer be our concern just as long as we get what we asked the server for.

The problem with http though is that it is vulnerable to people who might want to eavesdrop or see what your activity is all about. This too shouldn’t really be a serious problem if all you are doing is watching stupid  videos in youtube or googling your assignment. Most of our activity on the internet isn’t really that important for people to really care about. And even though it is there to see, no one who knows how to do it would actually bother to waste the time or face the possible legal implications of such acts. 

The true problem arises when you are sending or receiving data that is confidential or sensitive. You sure wouldn’t want other people knowing what your personal emails contain. Private messages should stay private. Then there are on-line transactions, when you buy something and you pay for it with your credit card, your credit card number gets sent across the internet every time. And if you are using http to do this then it should be real easy for malicious people to do harm to you or your finances.

The Internet’s answer to this is https (Hypertext Transfer Protocol over Secure Socket Layer) or HTTP over SSL is a secured connection that transmits data over the internet in an encrypted form. This security method means that even if someone is eavesdropping, the data they get would not be comprehensible or usable because they don’t have the means to decrypt it. The entire message is decrypted only when it arrives at its designated location.

So why don’t we shift everything to https? So that everything is secured. Although that is possible, it isn’t very advisable. Transmitting data via https require additional processing power to encrypt/decrypt the data. When you think about the servers who process millions if not billions of data in a day, that could result In massive slowdowns. That is why https is only used in certain pages that contain sensitive information like credit card numbers or passwords.

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Posted in: Technology

What is Dropbox?

Dropbox is a file hosting service operated by Dropbox, Inc. which uses cloud computing to enable users to store and share files and folders with others across the Internet using file synchronization.

Dropbox is the easiest way to store, sync, and, share files online. There’s no complicated interface to learn. Head over to Dropbox and download it to your computer. Then, of course, create a new account if you don’t already have one.
When you are finished installing, you’ll notice a couple of folders already there. There will be a public folder, as well as a photos folder. If you want someone to download a file, drag and drop it into your public folder. It will let you know when it’s finished uploading. Right click it, and copy the public link. Paste that into an Internet browser, and the download box will open automagically!


Dropbox is a free and easy way to transfer files. There are pricing options for larger Dropbox storage space should you need it. I have a large account, as this is how I transfer video files to Kat so that she can get them onto all of my channels for me. I have never had issues with it myself, and recommend the service to all of you.

Here’s how it works:

After installation and connecting to the server, the Dropbox interface is just like any folder on your computer. You simply drag and drop to move files around and any files or folders that are uploaded to Dropbox will immediately be synchronized within your account. In addition Dropbox also keeps track of every single change made to the contents of your storage and any changes are instantly updated to all computers linked to the account.

What happens if I’m not on any of my computers?

Absolutely no need to worry. Just get on the Dropbox web interface and you will be able to access your files from anywhere in the world. The Dropbox web interface also remembers all the changes you make to your files and allows you to restore to any previous versions of the file. You can even un-delete files that you may have accidentally erased.

Where Dropbox really shines is the way it allows you to share whatever you want with other people. Every individual folder can be shared with other people and every member of a shared folder will be able to add, edit, and delete the contents inside but will not be able to access anything outside of that specific folder. This file sharing system is perfect for team projects involving music or video editing, computer and system repairs, or for anything which needs collaboration among its members. There is also a public folder that allows you to share files with non-Dropbox users through the use of a hyperlink.

If you are looking for an easy and reliable way to share files amongst friends, family, and coworkers then take a look at what Dropbox has to offer. Dropbox is free for Windows, Mac, and Linux and you can have share 2 GB of your files for free or upgrade to Dropbox Pro for 50GB of storage.

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Posted in: Technology

3G Technology

 

 

Definition of 3G:

 

3G is the third generation of wireless technologies. It comes with enhancements over previous wireless technologies, like high-speed transmission, advanced multimedia access and global roaming. 3G is mostly used with mobile phones and handsets as a means to connect the phone to the Internet or other IP networks in order to make voice and video calls, to download and upload data and to surf the net.

 

How is 3G Better?:

 

3G has the following enhancements over 2.5G and previous networks:

• Several times higher data speed;
• Enhanced audio and video streaming;
• Video-conferencing support;
• Web and WAP browsing at higher speeds;
• IPTV (TV through the Internet) support.

3G Technical Specifications:

 

The transfer rate for 3G networks is between 128 and 144 kbps (kilobits per second) for devices that are moving fast and 384 kbps for slow ones(like for pedestrians). For fixed wireless LANs, the speed goes beyond 2 Mbps. 3G is a set of technologies and standards that include W-CDMA, WLAN and cellular radio, among others.

3G follows a pattern of G's that started in the early 1990's by the ITU. The pattern is actually a wireless initiative called the IMT-2000 (International Mobile Communications 2000). 3G therefore comes just after 2G and 2.5G, the second generation technologies. 2G technologies include, among others, the Global System for Mobile (GSM) - the famous mobile phone technology we use today. 2.5G brings standards that are midway between 2G and 3G, including the General Packet Radio Service (GPRS), Enhanced Data rates for GSM Evolution (EDGE), Universal Mobile Telecommunications System (UMTS) etc.

 

 

What is Required for Using 3G?:

 

 

The first thing you require is a device (e.g. a mobile phone) that is 3G compatible. This is where the name 3G phone comes from - a phone that has 3G functionality; nothing to do with the number of cameras or the memory it has. An example is the iPhone 3G. 3G phones commonly have two cameras since the technology allows the user to have video calls, for which a user-facing camera is required for capturing him/her.
Unlike with Wi-Fi which you can get for free in hotspots, you need to be subscribed to a service provider to get 3G network connectivity. We often call this kind of service a data plan or network plan.

Your device is connected to the 3G network through its SIM card (in the case of a mobile phone) or its 3G data card (which can be of different types: USB, PCMCIA etc.), which are both generally provided/sold by the service provider. Through that, you get connected to the Internet whenever you are within a 3G network. Even if you are not in one, you can still use 2G or 2.5G services provided by the service provider.

 

What Does 3G Cost?:

 

3G is not very cheap, but it is worthwhile for users that need connectivity on the move. Some providers offer it within a somewhat costly package, but most of them have plans where the user pays for the amount of data transferred. This is because the technology is packet-based. For example, there are service plans where there is a flat rate for the first Gigabyte of data transferred, and a per minute cost for each additional Megabyte.

 

3G and Voice:

 

Wireless technologies are a way for mobile users to make free or cheap calls worldwide and save a lot of money due to the latest telephony applications and services. 3G networks have the advantage of being available on the move, unlike Wi-Fi, which is limited to a few meters around the emitting router. So, a user with a 3G phone and a 3G data plan is well-equipped for making free mobile calls. She will only have to download one of the free applications and install on her mobile phone and start making calls. Using VoIP is a great way of saving money on phone calls.

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Posted in: Technology

Download torrent without any Client.

You can download torrent without any client software like utorrent etc.
Just follow the link below:
Click Here.

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Posted in: Tricks

Watch First Official Windows 8 Video.

Watch First Official Windows 8 Video...

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Posted in: Technology

Convert Torrent File into a Stand-alone Exe File.

If you want to download a torrent without any client like utorrent etc. then simply follow this link to convert your torrent into a stand-alone exe file so that you can download the torrent instantly.

Click Here.

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Posted in: Tricks

New Features in iPhone 4.

We’ve all been waiting to hear about the newest iPhone.  There was much talk of the name, and here we go:  the iPhone 4. The new features abound on the iPhone 4.  Here’s what we know:

Physical

• Microsim now standard
• Full stainless steel body with glass front
• Proximity sensor for dimming control and auto answer
• 24% thinner than previous 3GS

Now, as for those mysterious lines, Jobs explains that they are part of the structure of the phone.  They are in fact part of the antenna system, integrated into the new stainless steel structure of the phone.

Display

• New ‘retinal display’
• 960×640 resolution
• Only 22% fewer pixels than iPad

4x greater pixel density, in a new “retinal display” on the new iPhone will create incredibly sharp text.
According to Jobs, “there has never been a display like this”.  The text will appear as you would see it in a fine printed book “unlike anything you’ve ever seen in an electronic display”.
There is apparently no scaling of any of the interface elements, so there is no loss in size.  All of the elements simply look sharper than they did.  326 pixels per inch at a 960×640 resolution.  It’s not a true HD format, but it’s very close.  That amounts to 78% of the pixels of an iPad, carried in your hip pocket.
Jobs suggests that, though the new retinal display will increase the clarity of existing art, developers should spend some time on artwork.

Internals

• New battery
• Quad-band radio
• 3-axis gyroscope
• Proximity sensor

Speaking on the internals of the new iPhone 4, Jobs points out a new battery, that gives 7 hours of 3G talk, 6 hours of 3G browsing, or 10 hours if you browse over WiFi.  300 hours of standby time should be enough to please everybody.

Peak transfer speeds, on the quad-band HSDPA/HSUPA network should reach 7.2 Mbps down, and 5.8 Mbps up, theoretically.

Another incredibly cool feature is the addiction of a 3-axis gyroscope. The new feature will allow developers to work with pitch, roll and yaw, as well as rotation about a gravitational point.  6-axis motion sensing will open up an entirely new world.

There are some other sensors, as well.  Proximity (like the Motorola Droid) will allow display dimming and auto-answer.  A compass and ambient light sensors are also integrated.

Camera Changes

• 5 megapixel rear camera
• VGA front-facing camera
• 720 HD recording
• iMovie for iPhone

Camera features are now updated with a back-side lightning sensor that will allow better capture of night photos.  As Jobs states: “megapixels are nice, but what cellphone cameras are really about is capturing photos and low-light photography”.  Tap-to-focus and the rumored LED flash are also included.

HD video recording is another question that has been answered.  Full 720p at 30 frames per second will likely be a nail in the coffin to products such as the Flip Mino.

But you can also use a built-in port of iMovie to edit the files directly on your iPhone. The entire market of mobile video has just changed.  Now you’ll be able to add transitions, photos and even music to your creations, on the fly.  Geo-location features will tag your movies and you can add that information to the file.

Airtel iPhone 4 is now available in India @ premium price, 16GB will cost you Rs. 34,500 and for 32 GB you will have to pay Rs. 40,900/-

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Posted in: Technology

Create Date-Based Folder Names.

If you create files on your hard disk on a daily basis, consider using date-based folder names to help you keep your data organized. While manually creating folders with the current date as the name really isn't much of a hassle, wouldn't it be cool if you could automate the procedure? Well you can by changing the short date format and adding a special command to context menu.

Here's how to change the date format:

Open the Control Panel and double-click Regional and Language Options. and access the
Regional And Language dialog box.

In the Regional and Language Options dialog box, click the Customize button on the
Regional Options tab.

In the Customize Regional Options dialog box, select the Date tab.

In the Short Date panel, take note of the current Short Date Format setting in case you want to change it back.

Select the Date Separator drop-down field and select a dash (-) because Windows doesn't allow slashes in file and folder names.

Click the Apply button.

Click OK twice to close both the Customize Regional Options and Regional And Language Options dialog boxes.

You can actually use any of the settings on the Short Date Format drop-down menu or a custom format as long as you use a dash as the separator. Keep in mind that any change you make to the Short Date Format setting will affect the way the date is displayed throughout the entire operating system.

Here's how to create the special command on the context menu:

Launch Windows Explorer and select Tools | Folder Options.

In the Folder Options dialog box, select the File Types tab.

In the Registered File Types list, select Folder, and click the “Advanced" button.

In the Edit File Type dialog box, click the “New" button.

In the New Action dialog box, type New Date-Based Folder in the Action text box and CMD.EXE /C MD "%1\%%DATE%%" in the Application Used To Perform Action text box. 

Click OK twice. Click Close to close the three dialog boxes.

Now, whenever you want to create a new date-based folder name in Windows Explorer, simply right-click on the folder in which you want to create the folder and select the New Date-Based Folder command from the context menu. Keep in mind that on any given day you won't be able to create two identical date-based folder names within the same folder.

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Posted in: Tricks