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Why does encryption not destroy the way networks work?

Why does encryption not destroy the way networks work?

I've a very basic understanding of how encryption works.

Asked by: Guest | Views: 268
Total answers/comments: 2
Guest [Entry]

"Your assumption #4 is partly correct. Most often in technologies such as SSL/TLS, IP addresses & MAC addresses are sent unencrypted. More specifically, if we look at the OSI Networking Model, IP addresses are part of the of level 3, MAC addresses are part of level two whereas SSL/TLS is at level 4. Most encryption technologies work above level 3 so that the addressing can be read by standard routers and switches.

In order to solve the man in the middle problem encryption technologies have to provide some sort of authentication before starting up and encrypted session. In the SSL/TLS example the use of certificates which are provided by a trusted certificate authority (ie Verisign) is used for authentication."
Guest [Entry]

"Number 4 is true. When an encrypted packet is sent, the data is encrypted, not the source and destination addresses.

Take a look at this SSH login packet:

It is displayed as an encrypted request packet. As you can see, the source and destination details are visible."