How SSH (Secure Socket Shell) Works

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UNDERSTANDING
HOW SSH
(SECURE SOCKET SHELL) WORKS
SWIPE LEFT
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JACK What are you doing?
JILL I am sending an important file to my
manager.
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JACK Dont you think it is risky?
JILL How?
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4
JACK What if someone intercepts and reads your
file without your permission?
JILL What is the safest way for me to send this
file to my manager?
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5
JACK Use SSH protocol
JILL What is SSH protocol?
?
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JACK SSH is a network protocol that allows
users to access and communicate with remote
computers over an unsecured network.
JILL How will it protect my file?
?
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JACK You attach your file in a message,
secure it with a lock (encryption key) (now only
you have the key), and send it to your manager.
JILL How will he know my key?
?
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JACK Your manager doesnt have your key. So he
adds another lock to the file and returns it to
you.
JILL But he didnt read my file yet.
X
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• JACK
• Now that your manager's lock is locked, you use
  your key to open that file and send it back to
  him. Then, without anyone being able to
  intercept it, he uses his key
• to unlock the file and reads it.

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The SSH protocol transmits data between client
and server using symmetric solid encryption,
hashing, and public-key cryptography.
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