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IPsec (Internet Protocol Security) provides secure communication over IP networks by implementing multiple security functions.
✔Data Origin Authentication:
Ensures that the sender of the data is genuine and not impersonated.
Uses techniques such as HMAC (Hash-Based Message Authentication Code).
Correct Match:"The receiver verifies the identity of the sender."✅
✔Data Encryption:
Protects data confidentiality by encrypting packets using AES, 3DES, or other encryption algorithms.
Ensures that only the intended recipient can decrypt the data.
Correct Match:"The sender encrypts the data, and the receiver decrypts the data."✅
✔Data Integrity:
Ensures that data is not altered in transit.
Uses cryptographic hashes (e.g., SHA-256) to verify integrity.
Correct Match:"The receiver verifies received data to determine whether the data has been tampered with."✅
✔Anti-Replay:
Protects against packet replay attacks, where an attacker resends captured packets to disrupt communication.
Uses sequence numbers to detect and reject duplicate packets.
Correct Match:"The receiver rejects duplicate data packets."✅
????Reference:Huawei HCIE Datacom – IPsec Security Functions
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