Internet Protocol Security (IPsec)

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Internet Protocol Security (IPsec)
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What is IPSec?
Internet Protocol Security (IPsec) is a set of
rules and technologies designed to keep your
online data safe and private. It provides
authentication, integrity, and confidentiality.
IPsec Suite
Authentication - Verifies the identity of the
parties involved
Integrity - Ensures the data has not been
tampered with
Confidentiality - Encrypts data to keep it private
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How IPsec Authenticates and Manages Keys
IPsec mutually authenticates agents at the start
of the session. It negotiates cryptographic keys
for secure communication.
Agent A
Agent B
Authentication - Using protocols like IKE
Key Negotiation - Using Diffie-Hellman or similar
protocols
Secure Session - Encrypted communication
established
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Key Protocols in IPsec
Authentication Header (AH) Ensures data
integrity and origin of authentication. Encapsulat
ing Security Payload (ESP) Adds data
confidentiality and encryption.
Authentication Header (AH)
Integrity
Authentication
Encapsulating Security Payload (ESP)
Confidentiality
Authentication
Integrity
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IPsec Modes of Operation
Transport Mode Encrypts only the payload. Tunnel
Mode Encrypts both payload and header.
Transport Mode
Header
Encrypted Payload
Tunnel Mode
Encrypted Header
Encrypted Payload
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Why Use IPsec?
Enhanced security through encryption. Protection
against network attacks.
Benefits of IPsec
Enhanced Security
Network Attack Defense
Data Encryption
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IPsec Applications
Used in VPNs for secure remote access. Secures
communications within corporate networks.
Remote User
IPsec Tunnel
IPsec Tunnel
IPsecTunnel1 Remote User IPsecTunnel2 Remote
User
Remote User
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