Aggressive Mode
: the VPN tunnel will use Aggressive mode instead of
Main mode when enabled. Disabled by default.
IKE DH Group
: the Diffie-Hellman (DH) group used in the Internet Key
Exchange (IKEv2) protocol.
IKE Encryption:
defines the encryption algorithm used in the IKEv2
protocol.
IKE Hash:
defines the Hash function used in the IKEv2 protocol.
ESP Encryption:
defines the encryption algorithm used in the
Encapsulating Security Payload (ESP).
ESP Authentication:
defines the cryptography function used in the ESP
authentication.
Perfect Forward Secrecy:
option to enable the Perfect Forward Secrecy
(PFS) in the IPSec VPN. A PFS DH group will be needed if PFS is enabled.
For client settings:
Mode:
the working modes of the IPSec Tunnel, must be Client when
used with a L2TP client.