L2Tp - Planet VCG-1500WG-LTE User Manual

Phase 2

5.4.4 L2TP

L2TP （Layer 2 Tunneling Protocol） , the Layer 2 channel protocol, is one kind of VPDN technology, used to the send layer data
channel transmission. That is, encapsulating the second data unit, such as point-to-point protocol (PPP) data unit, into IP or
UDP load to go through switch network (such as internet) successfully, then arrive.
when single key leaks
Debug: Enable debug information
NAT Traversal: If this gateway doesn't connect with public network directly, but transmit
through IP original address, please use "NAT Traversal"
Authentication: Pre-shared Key mode and Certificates X509 mode
Cipher: DES, 3DES, AES and AES128
Hash: SHA1 and MD5
DH group: Group1, Group2, Group5, Group14, Group15, Group16, Group17 and
Group18
SA lifetime (s): phase negotiation valid time
Key: when Pre-shared Key，it is shared key
Phase 2 is protected by phase 1, any message that was not protected by phase 1, SA
will be refused. In phase 2, negotiate the communication protocol fast, changing secret
key and establish communication.
DH group: Group1, Group2, Group5, Group14, Group15, Group16, Group17 and
Group18
Lifetime (s): Phase negotiation valid time
Cipher: DES, 3DES, AES and AES128
Hash: SHA1 and MD5
DPS Timeout: the default time of dps timeout is 120s
IPComp: IP Payload Compression Protocol
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User's Manual of VCG-1500WG-LTE