The SSH protocol specifies how to securely communicate over a network by providing authentication of users, encryption of data, and integrity checks to ensure data is not altered. It authenticates users through digital identity proofs, encrypts data to scramble it so it is unintelligible to anyone but the intended recipients, and guarantees data traveling over the network arrives unaltered through integrity checks.

1. THE SSH Protocol

2. SSH is a protocol, not a product. It is
a specification of how to conduct
secure communication over a
network.
The SSH protocol covers
authentication, encryption, and the
integrity of data transmitted over a
network.

3. Authentication
Reliably determines someone’s
identity. If you try to log into an
account on a remote computer, SSH
asks for digital proof of your identity.
If you pass the test, you may log in;
otherwise SSH rejects the connection.

4. Encryption
Scrambles data so it is
unintelligible except to the
intended recipients.
This protects your data as it passes
over the network.

5. Integrity
Guarantees the data traveling over
the network arrives unaltered.
If a third party captures and
modifies your data in transit, SSH
detects this fact.

6. Authentication, Encryption & Integrity
Authentication
“I am me”
“I am me too”
Encryption
Integrity
SSH
Client
SSH
Server

7. THANKS
Pankaj.S