IPSec Packet

Authenticated Header (AH)

Generated from SHA-1 or MD5 algorithms. Provides data integrity to ensure packet data is not tampered with.

Encapsulated Security Payload (ESP)

The section of the IPSec packet where a data is stored. Often encrypted through:

• DES
• 3DES
• AES Contains:
• Header
• Payload data
• ESP Trailer (optional) : data for padding or integrity checks