Posted on 17 August 2011
Internet Protocol address (IP address) is an exclusive identity of the user on the internet as it indicates ones location (i-e the longitude, latitude) in the cyber space. It is simply a tag dispensed to the cloud of devices sharing computer network that uses the unique IP address to connect to the internet. This internet protocol is separately assigned to each user. This is more like your internet address.
Static IP Address
Currently IP addresses are based on 32-bit addresses. There are about 4.2 trillion combinations because we have a mishmash of 4 sets of three integers (IP version 4) and now it is transferring to IP version 6 (i-e 32 bit address to 128 bit) in forthcoming years. This IP address is of great use in recognizing some one on World Wide Web. This is more like your telephone number. Both callers recognize each other through their specific phone numbers. This is similar here. When user visits the web site, it is recognized through its IP address. The computer of user actually seeks for website address. When it get that, the user will be directed to required server and ultimately to the correct page.
Dynamics IP Address
The rapid explosion of World Wide Web has also created some complexities and problems. With the increase of number of user, this static IP concept can’t full fill the need of assigning all users with separate IP address. In order to solve that, Dynamic IP address has been introduced. It works in such a way that when a user started to use internet, it is assigned with some unique IP address from pool. But when user disconnects the internet. Read the full story
Posted on 22 June 2011
Converting website names into IP addresses is the main role the DNS servers. It is for our ease and convenience that human readable domain names have been created. Actually these human readable domains that we type are again changed into IP addresses. So in simple words the fundamental job of the DNS is to convert the domain name into its particular IP address and IP address to its corresponding domain name. Both domain and IP addresses have the same task i.e. to open a website. So accordingly it can be just said that a particular IP address cannot be of more than one domain.
DNS Server Types
Recursive & non-Recursive are the two main types of DNS Servers. In a recursive, the client sends queries and receives complete feedback from the ISP’s recursive DNS Servers. This could also result in engaging the servers. A non-recursive DNS is one which provides a record of the domain without engaging other servers. Recursive server is mostly used at lower level such as in LAN networking. While the non-recursive servers are probably used for elite levels because of a higher number of requests, so that it provides partial results without engaging other servers.
Using Chroot network is highly recommended for security reasons. Chroot environment is a process that produces a file that clones the main root system so that if an attacker is cracking the network to reach the root system, he cannot damage the whole system, because he has no access to those files which are not on that network.
There are many issues resulting in the compromising on the DNS Security. Redirection is also a major problem in which an attacker is able to redirect name queries to the DNS servers controlled by him. Flooding one or more DNS servers on a network with recursive queries is a way by which an attacker denies the availability of network services. This is known as Denial of Service Attack. There is a process called foot print in which DNS Zone data could be obtained by the attacker to get information about domain names, computer names and IP addresses.
Advantages of DNS Server
The main advantage of DNS Server is that it is free and fast. One could surf on internet not only safely but also quickly. One can add the DNS domains manually in TCP / IP networks, so it is not only easier but also safer.
When it comes to surf the internet, free and fast DNS Servers are readily available. One can find many free DNS Providers on the internet that could act as a solid rung towards providing the particular DNS server according to requirement. Some of best providers are given below:
SpeakEasy (Seattle, WA, US)
- 22.214.171.124 Read the full story
Posted on 20 April 2011
After jailbreaking your iPhone, the installation procedure leaves a new app on your home screen, this app called “Cydia” allows you to access the jailbreak app databanks that are essential in downloading your favorite jailbreak applications. Once there were used to be numerous jailbreak installers on your phone or iPad, but now, with the integration of Installer into Cydia and the union of Rock into Cydia, all the jailbreak applications are now in one location. Jailbreak apps used to be free once, but nowadays there are a number of commercial apps obtainable that have a much higher standard.
After such a long time jailbreak apps, especially for your iPhone and iPad are becoming more and more stable. Now you should not worry about jailbreaking apps corrupting your system or installing worms, botnets or viruses. And now you can also Keep track of all your transactions and space inside the Cydia app. It has never been this easy, especially on the iPad.
Now here are our latest picks for the top three Cydia apps that are a must have on your iPhone.
1. Winterboard and Summerboard
What these two apps basically do is to change your background and icons and also change your entire UI. It only has this one tiny problem, which is that you’ll undergo through some delay to accomplish your preferred result, but it usually has some pretty awesome results. You can change only the keyboard, but not the UI( User Interface ), or vice versa, and also you can modify every detail of the Springboard. For 2010 and 2011 are the new “Live Wallpapers” like the android that permits your iPhone to use totally neat stirring backgrounds. This effect while making your phone look absolutely cool also drains your battery.
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Posted on 23 March 2011
After getting your domain name registered, paying off to your web host to get hosting for your website, and uploading your website on the web server, its time to view the final shape of your website. If you cannot view your website after all this hard work then does it mean it that you are missing something or is it just something with DNS propagation?
Understanding DNS Propagation
Before understanding the DNS propagation, you should be aware of the working of DNS. A master DNS is created by your web hosting provider in the event when you set your website up with it. This Master DNS is recorded in the Domain Name Server of your web hosting provider. The company which registers your domain name contacts to the DNS server of your web hosting provider. Your domain name registrar does it as the master authority of your domain which you have registered with it.
How Your Website is Being Searched?
When an outsider source searches your website, it first switches to the registration database in order to find out about the DNS authority of your website. After then that it goes to the DNS sever of your web hosting service provider in order to find out the IP address of your website’s domain name. From this IP address, this outsider source locates your website and can view your website.
Caching the DNS Records
The only problem with this searching process is that when your website is searched on internet by an outside source, the search process is catalyzed, as every ISP caches it DNS records to display your website in quick time. Read the full story
Posted on 05 January 2010
A webcam is the loosely used term for any camera that produces images that can be regained by and displayed on the world wide web through a server. Webcams are one of the oldest technology on the Internet. Webcams have high usage percentage. it can be use as Quick cam, Flex cam, as a security cam, in internet chatting, Video telephony, in video conference call and so on.
Listing thousands of free webcams, aerial map views and Google street views from around the world Enjoy viewing many thousands of live webcams around the globe .You can view web cams by continent, country or by webcam category. By using simple Google Search, any user that has approach to the net can logon, access and watch many unprotected cameras and webcams around the world.
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