Final answer:
Internet Protocol Security (IPsec) has three major components: Authentication Header (AH), Encapsulating Security Payload (ESP), and Internet Key Exchange (IKE).
Step-by-step explanation:
Internet Protocol Security (IPsec) is a protocol suite used for securing Internet Protocol (IP) communications. It provides security services such as confidentiality, authentication, and integrity for IP packets. IPsec has three major components:
- Authentication Header (AH): It provides data integrity, authentication, and replay protection for the IP packet's contents. It ensures that the packet has not been tampered with during transmission.
- Encapsulating Security Payload (ESP): It provides confidentiality, authentication, and integrity for the IP packet's payload. It encrypts the packet's contents to protect them from unauthorized access. ESP can be used in conjunction with AH.
- Internet Key Exchange (IKE): It is a protocol used for establishing and exchanging cryptographic keys between two parties. IKE negotiates security parameters and sets up a secure communication channel for IPsec.