After the events occurring in Egypt, with the closing of the networks within the territory, many wonder about the capacity that currently exists to close Internet. The ease with which Egypt was isolated from the rest of the world to cut their networks indicate that, at least in a piecemeal fashion, networks are relatively easy to block. Could you quit, cause a blackout like the U.S. if someone decides and let the entire world population without Internet? From CNN have been contact Robert Faris, a researcher at Harvard in networking, and Jim Cowie, co-founder of Renesys, to analyze the possible situations that may occur.
terms should be differentiated. Today you can block the sending of data in a given territory, but not completely shut down the network. Jim Cowie, founder of Renesys, one of the largest companies worldwide tracking network, indicates that the total network cut today would be impossible, since the mode of action, even blocking of network industries, develop a network divided into multiple streams:
Internet is like a worm adaptable, if we tried to break it in half the two halves would function as separate networks, each one individually. The network is due to the legal framework of each country to determine if it can block access to the citizens of that country. If you really want off the Internet worldwide, would have to find people from every continent and every country, because Internet is decentralized and there is no off switch
To Robert Faris, a researcher at Harvard:
No there is a button on or off the network. Internet is designed to be robust. Some links rest while others open. Communication will always somehow "
Perhaps this is why the best way to explain what would happen would be to apply what we are experiencing these days. For example China, who uses the networks to filter and censor content that the system decides. Or Iran, using the same method used by China, letting the flow of information that suits them best.
Egypt's case it was not a lock or a blackout, but rather a network lock. It is very likely that the government of Egypt have I called the providers of Internet services to order a lockdown, where unlike a "total closure" altered the routes of information with Internet nodes, leading to a blockage at the entrance and output traffic.
Still, in the case of Egypt we see how the Egyptian people, unable to access the network via broadband, they used different means using international calls to Europe to log into the network through the telephone or through the tool provided with Speak2Tweet Google and Twitter via voice messages.
These days the U.S. discusses the possible controversial entry to the legislation of a new power over the U.S. president. The power to cut the net in the U.S. under "threat," a broad meaning of the word that poses a serious debate on whether or not life-altering millions of citizens who may be offline if so decided by the government, called for the "Internet" "kill switch" (switch murderer).
Via: CNN five there, you have to use their remaining reserves, estimated that allow us to reach the month of September this year,
and then what? Do we face the end of internet? 
.
. Hardly, it seems that we are not facing any kind of apocalypse of epic proportions, nor to the hysteria that was generated with the famous 2000- , which we announced, essentially, total paralysis of many systems on the planet. This time we face migration to a new protocol , ie abandon IPv4 ( Internet Protocol version 4, as defined in RFC 791
) and adopt IPv6 ( Internet Protocol version 6, as defined in RFC 2460 ) . And why this change? , because if the Year 2000 came from a design error (encoding the two-digit date without thinking of a new millennium), you could say, saving a little distance, IPv4 comes from an assumption that final cut ended up staying, but it is also true that at that time was difficult to think of the Internet revolution and the number of devices connected to the network.
IPv4 is based on a pool address encoded in 32 bits, therefore 4,294,967,296 addresses from which a group is quite high for local area networks, with begins to mark out a little field. In addition, there other factors that have contributed to waste this, already scarce, resource :
Originally, never thought about the enormous growth that would have Internet, so that very large blocks allocated directions (known as the class A, with 16 million addresses) to countries, companies and universities. For example, initially, there were corporations that had reserved more IP addresses than Japan or the entire African continent, such as MIT
, Ford or IBM .
Large corporations and organizations in the 80 packages were class A addresses, in the end, never been used nor have they returned all the leftovers. SIN G have followed public addresses for computers that are not accessible outside their local networks. - Another problem was the theme of division Addressing a range of smaller subnets, since the split, the resulting first and last address is not usable, as well as the divisions should be in numbers that are power of 2, so that, normally, is just being address books that are not used. also the technological evolution has contributed
- to address depletion, mainly due to:
- At first, the connections were based on data modems, therefore, were not persistent and did not need a fixed address for each client, however, inclusion dedicated lines and the explosion of broadband has meant that virtually every household connected to the network needs a public IP.
addition, mobile telephony, including data services and the rapid penetration of smartphones 
has increased exponentially, the need for IP addresses. Really, all this was unthinkable in the 70 to
Vinton "Vint" G. - Cerf and Robert Elliot Kahn
- , the parents considered the Internet.
- Vint Cert, which is the Chief Internet Evangelist Google
of and chairman of ICANN recently in an interview with the Sydney Morning Herald said : I thought it was an experiment and 4,300 million addresses would be sufficient. Who the hell knew how many addresses are needed? This does not mean that the Internet is stopped, it simply means it has not been built very well Okay, so then if one of the fathers of the Internet says that, then the situation is worse than it seems, right? . Well, no , for quite some time has worked in the evolution to IPv6 to part with a database of addresses that will be difficult and exhausting. IPv6 addresses
comes with 128-bit encrypted , ie 340,282,366,920,938,463,463,374,607,431,768,211,456 address (67 quadrillion addresses for every square millimeter of surface of the planet), which is sufientes suppose to give us leeway for some time.Does the current problem?,transition to IPv6, it will not be an immediate process nor as simple as pressing a button to switch to the new protocol. Not
need to be alarmed but do not sleep. The litmus test we will see in June, specifically, the 8th, which is the IPv6 World Day , ie day on which Yahoo! ,
Facebook , Bing , Akamai or Google, for 24 hours, make their services available on IPv6 to make sure everything goes correctly, this transition, only affects users. I say only affect users because, despite most operating systems support IPv6, it is possible that some users have to modify the firmware of their routers, some companies have to revise your network, etc, though this is not a total blackout, but a gradual transition in which both services coexist.
In fact, both systems are already living together for some time: The United States government ordered the deployment of IPv6 in federal agencies in 2008
YouTube
IPv6 ready for 4 or 5 years like Facebook or Google - During the Campus Party Brasil past
- January, Telefónica IPv6 tested
- Although, however, to IPv6 has a lot of shooting and, I fear that this transition will be long time, some estimate two years, and will not be free bugs and patches. In fact, users have to maintain, for this coexistence, both protocols enabled (dual-stack) to access the services that have no IPv6, and to continue working with IPv4.
Yahoo has estimated that 1,000,000 visitors miss the day of evidence simply because one of the links in the chain has done its homework 
(hence the test will last only one day.)
(hence the test will last only one day.) Indeed, besides an inexhaustible supply of available addresses, IPv6 offers us greater security (IPsec is mandatory in IPv6) and offer us a better level of protection against attacks "by brute force." It will facilitate management through autoconfiguration (which we could release the DHCP servers) and add mechanisms for quality of service through traffic flows. Ultimately, that for a couple of years both services coexist, end users will almost be the last to migrate, and most of the work will be for service providers. What some have called the IPv4 ARPAgeddon
, or IPocalypse ,
not think it is a total collapse of Internet , although it is true that those services have not worked for this transition, you might end up having bugs and have to spend more money to restore its services and adapt.
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