SSH (Secure Shell) is a network protocol used to establish a secure and encrypted connection between two computers over an unsecured network, such as the internet. It provides a secure channel for remote login, data transfer, and other network services.

1. @infosectrain
SWIPE LEFT
@infosectrain
HOW SSH
UNDERSTANDING
WORKS
(SECURE SOCKET SHELL)

2. www.infosectrain.com
What are you doing?
JACK:
2
I am sending an
important file to
my manager.
JILL:

3. www.infosectrain.com
Don’t you think it is
risky?
JACK:
3
How?
JILL:

4. www.infosectrain.com
What if someone
intercepts and reads
your file without
your permission?
JACK:
4
What is the safest way
for me to send this file
to my manager?
JILL:

5. www.infosectrain.com
Use SSH
protocol
JACK:
5
What is SSH
protocol?
JILL:
?

6. www.infosectrain.com
SSH is a network
protocol that
allows users to access and
communicate with remote
computers over an
unsecured network.
JACK:
6
How will it protect
my file?
JILL:
?

7. www.infosectrain.com
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.
JACK:
7
How will he
know my key?
JILL:
?

8. www.infosectrain.com
Your manager doesn’t
have your key. So he
adds another lock to
the file and returns it
to you.
JACK:
8
But he didn’t
read my file
yet.
JILL:
X

9. www.infosectrain.com
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.
JACK:
9

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