Configuring IPSec

IPSec provides security to IP flows through the use of authentication and encryption.

Authentication verifies that data is not altered during transmission and ensures that users are communicating with the individual or organization that they believe they are communicating with.
Encryption makes data confidential by making it unreadable to everyone except the sender and intended recipient.

IPSec comprises two encapsulating protocols:

Encapsulating Security Payload (ESP) provides confidentiality and authentication functions to every data packet.
Authentication header (AH) provides authentication to every data packet.

For information about configuring IPSec, see JUNOSe IP Services Configuration Guide.