All it knows is that the MIDDLE SERVER has forwarded the message to it. But it doesn’t know the original source of the message. Now, the EXIT NODE knows what the message says because it has to peel off the final layer of encryption before the message can go out to the public Internet.At the same time, the middle server doesn’t know who sent the message to the ENTRY NODE because that information is not passed through the TOR network. It can’t read the message because there is still one layer of encryption left. The MIDDLE SERVER knows the message has come from the ENTRY NODE and that it has to forward the message received from the ENTRY NODE to the EXIT NODE.So the ENTRY NODE just receives a message from our computer using TOR and forwards that message to the MIDDLE SERVER(without actually knowing what’s in the message). But it doesn’t know what the exact message is, because of the additional layers of encryption. The ENTRY NODE can see the IP address of our computer.We can divide the TOR network into : ENTRY NODE, MIDDLE SERVER and EXIT NODE for better understanding.TOR network consists of thousands of independent servers run by volunteers around the world.Here’s what happens in a Tor network: TOR was called The Onion Router because this software uses a technique known as onion routing to hide information about user activity. So, we don’t need to trust anyone to use TOR safely. No one organization controls either the TOR software on our computer or the individual servers in the network. TOR is a network of servers that we communicate with anonymously. Later, TOR was released as an open source free software. TOR was primarily developed for the use by the US Navy so as to mask their IP addresses which could lead to theft of sensitive data. Also no one can tell which country we’re in by analyzing our IP address. TOR makes it difficult, if not impossible, for any snoops to see our web mail, search history, social media posts or other online activity. TOR ( The Onion Router) is a software and open network which allows the users to browse the Web anonymously.
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