Interesting facts about Internet
- There are only 13 root DNS servers across the world. These servers resolve the name of websites to actual IP addresses. So if someone can bring down these root servers, the internet might completely stop (Public dns servers might not be able to bear the load).
2. About 80% of the total emails sent are spam. Out of all spam emails, pharmacy tops with about 81%.
3. Internet was originally developed not keeping security in mind. IPv4 does not contain anything to deal with security. IPv6, the next version does but it is slow compared to IPv4.
4. Last batch of IPv4 addresses were given out in 2011. Now to get a new IP address, you need to get IPv6 address. IPv4 has a limit of 2^32 addresses whereas IPv6 has 2^128.
5. None of the encryption is unbreakable. It just takes a long time if you use a brute force method. But given enough time, they can be cracked (The required time is in hundreds or even thousands of years for modern computers).
6. There is no solution to DDOS attacks. DDOS (Distributed Denial of Service) is an attack where you send so many requests to the server that it cannot process them. That’s why it is known as Nasty attack. Following image explains DDOS in simplest terms.
7. There can only be a maximum of 70 routers(hops) between source and destination. This is done to stop flooding in the networks. If a packets has been travelling for 70 hops, it is dropped.
8. Internet packets do not always follow the shortest path between source and destination. Even political factors change the route. I guess politics is everywhere.
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