Draytek Vigor2760 Series User Manual page 182

Network
My WAN IP
Local Subnet
Remote LAN
Gateway
you add another one option instead.
Phase1 DH Group / Phase2 DH Group –It is available if
Custom for IKE Proposals is selected above. Both parameters
are used to choose the length of the session key. The more the
length is, the safer the data transmission will be. However, the
time to generate the security key will be long.
Phase1 Key Lifetime (min) –For security reason, the lifetime
of key should be defined. The default value is 28800 seconds.
You may specify a value in between 900 and 86400 seconds.
Phase2 Key Lifetime (min) –For security reason, the lifetime
of key should be defined. The default value is 3600 seconds.
You may specify a value in between 600 and 86400 seconds.
Perfect Forward Secrecy (PFS) –The IKE Phase 1 key will
be reused to avoid the computation complexity in phase 2. The
default value is inactive this function.
Dead Peer Detection –Action – This function will detect if
any response received from the peer. If no response, the chosen
action will be performed. Hold means such VPN connection is
still active; Clear means such VPN connection will be down.
Dead Peer Detection – Delay Time (sec) – It is available
when Clear is selected for Dead Peer Detection above. Set
the interval for the detection. The default setting shall be "30"
seconds.
Dead Peer Detection – Timeout (sec) –It is available when
Clear is selected for Dead Peer Detection above. Set the time
that the system will wait for the response. The default setting
shall be "120" seconds. In default, the detection will be done
for four times within the default time. If there is no response,
the VPN tunnel will be disconnected.
Type the WAN IP address for the VPN tunnel.
Add a static route to direct all traffic destined to Local Subnet
through the VPN connection.
This field is only applicable when you select PPTP or L2TP
with or without IPsec policy above. Type the LAN gateway
address of the remote router for the VPN tunnel.
174 Vigor2760 Series User's Guide