Tag Archives: Web

What Are Internet Cookies?

You must have heard of ‘cookies’ stored on your computer and that at times you need to clean them regularly while at other times they are useful for fast and easy filling in of forms and information on the net. So what exactly are these internet cookies or web cookies and why are they needed?

Internet cookies are the files that store data on the user computer and the server. The reason for storing this data is so that when required, it can read it for a fast access and simultaneously, saving in a lot of time while entering information in a website, since that bit of information has already been collected and stored on the user’s PC. Cookies are mainly stored by online shopping websites to keep a track of your purchases and information entered and save you from entering them again and again.

How these web cookies function can be understood better following this example. When a user visits a website, the first time the web server tracks the visit and with every subsequent visit thereafter, it checks on which pages are visited more often than the others by the server gathering cookies from your browser and keeping a track of your surfing.

The kind of information cookies trace are your computer’s operating system, browser that you are using, your internet connection, and IP address. Cookies are usually safe but all cookies can’t be trusted that can track confidential information you share on the net. Cookies can be classified into two types:

1. Session cookies: The life span of these cookies is till an individual’s stay on a particular website. The moment that particular website is closed, the cookies associated with it are gone too. Session cookies are there to enable a user to surf easily, where the information about each page visited, gets accumulated simultaneously.

2. Persistent cookies: These cookies are stored on the PC and each time the user visits a particular website, the cookies enable the user to enter information that has been entered before and now saved as cookies. Every browser has settings where you can fix the amount of time you want the persistent cookies to be stored.

Pros

Once cookies are stored on a website, the user need not enter the same information manually every time. Information that has been fed the first time can be retrieved later.

Cons

One security lapse that a cookie has is, anyone using your computer can access your important information stored via cookies.

What Is A Good Web Browser To Use?

A browser is a platform which enables us to view the world wide web (www) pages. Some of the most popular browsers are Internet Explorer, Mozilla Firefox, Opera, Google Chrome and Apple Safari. Besides some common features, each of these browsers is equipped with some unique ones to help you decide which one would you like to pick up for your internet usages.

The kind of Internet browser you have, will determine on the kind of web surfing experience you enjoy. Even though most people download a couple of browsers to use them for different activities, it is however recommended, not to. Using too many browsers at the same time can create a conflict amongst them and you may find many of your web applications not responding properly.

Now coming to which browser would be the best to surf the net, here are a some basic features one needs to keep in mind:

Ease of use: Along with a stylish look, the browser needs to be such that even novice users feel comfortable while surfing the net. Too many complicated features will create confusion in the user’s mind. In contrast it should provide an easier way to surf, such as tabbed interface and inbuilt web-search.

Good Security: This is a prime factor while deciding on the browser one chooses. We are all aware of certain websites giving a virus attack to our PC’s, as soon as we visit them. Most of the times, we are unaware which of these websites are harmful to browse. A browser should not be vulnerable to such attacks. At other times, pop-ups intrude and hamper the smooth browsing. So a browser needs have an inbuilt pop-up blocker too. Another aspect one needs to take care of is ongoing phishing, where a user’s sensitive information like password and credit card details can be easily leaked out. A browser with good security features would see to it, that you can have a relaxed online experience.

Speed: A browser should be equipped to provide good surfing speed. It should not take ages to open a graphic intensive page and java enabled applications. Along with the internet speed, browsing speed also depends on how long your browser takes to process the pages and run scripts on them.

These are a few things that you would need to keep in mind while selecting web browser, so as to make your surfing experience an enjoyable one.

What is Web Proxy Server ?

Proxies are store-and-forward caches. When you configure your browser to use a proxy, but never connect to the URL. Instead, always connect to the proxy server, and he asked for the URL for you. Proxies can be used as a kind of firewall, because it isolates you connect to the Internet.

How does a proxy server work ?

A proxy server receives a request from an Internet service (such as a Web page request) from a user. If the filter requirements, the proxy server, assuming it is also a cache server, looks in the local cache of previously downloaded Web pages. If it finds the page, give it to the user without the need for the application to the Internet. If it does not in the cache of the proxy server as a client on behalf of the user, uses its own IP addresses to the page of the server on the Internet. If the page is returned, the proxy server on the original application and send it to the user.

For the user, the proxy server is invisible; all Internet requests and returned responses appear directly addressed to the Internet server. (The proxy is not completely invisible, its IP address
must be specified as a configuration option in the browser or other protocol program.)

web-proxy-serverWhat are the advantages of using a proxy server ?

An advantage of using a proxy server that the cache can serve all users. If one or more Internet sites are frequently requested, these are likely to be in the proxy’s cache, which the user response time. In fact, there are special servers called cache servers.

The functions of proxy, firewall, and caching can be in separate server programs or combined in a single package. Other server programs can be on different computers. For example, a proxy server on the same machine with a firewall server or it can be on a separate server and forward requests through the firewall.

There are several types of proxy servers with different properties, some are anonymous proxies used to hide your real IP address and some are used to filter sites containing material that may be unsuitable for people.

When you connect to a website, your real IP address will not be shown, but the proxy servers IP will not mean that you are completely anonymous. The proxy server will have logs of IP’s that uses the proxy server and the times.

So why would you use a proxy ?

You can use a proxy server if you have a child and the desire of the sites they view, make sure you have the right kind of proxy because not all proxies filter sites. You can use it to protect yourself, it can be used to hide your IP which is useful because it means hackers can not information about you in their use. They will only proxy servers IP. Proxy servers are not hard to install, no hardware or software, you only need to configure your browser to connect through.

Some ISPs (Internet Service Providers), all users use a proxy server, for example in the United Arab Emirates, the leading ISP, all users use a proxy server which blocks sites with inappropriate material. It does this using the meta tags in the HTML code used to access the web page. Some ISPs can offer you a choice, so you can use or not. If you want to use a proxy server, there are many around with different functions, you only need the one that suits your needs best.