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L2TP with IPSec Policy: Specifies IPSec policy for L2TP.
None: Does not apply IPSec.
Nice to Have: Applies IPSec first. If fails, tries without
IPSec again.
Must: Species L2TP over IPSec.
If IPSec Tunnel or L2TP with IPSec Policy set to Nice to
Have or Must, select security methods as described in
followings. Please refers to section 4.2 to set up IKE pre-
shared key.
Medium(AH): Specifies the IPSec protocol is the Authenti-
cation Header protocol. The data will be authentic, but will
not be encrypted.
High(ESP): Specifies the IPSec protocol is the Encapsulating
Security Payload protocol. The data will be encrypted.
DES without Authentication: Uses DES encryption algorithm
and does not applies any authentication.
DES with Authentication: Uses DES encryption algorithm
and applies MD5 or SHA-1 authentication algorithm.
3DES without Authentication: Uses triple DES encryption
algorithm and does not applies any authentication.
3DES with Authentication: Uses triple DES encryption
algorithm and applies MD5 or SHA-1 authentication algo-
rithm.
VPN-16
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