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.
