Draytek Vigor2133 User Manual page 236

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IKE phase 1 mode -Select from Main mode and Aggressive
mode. The ultimate outcome is to exchange security
proposals to create a protected secure channel. Main mode
is more secure than Aggressive mode since more exchanges
are done in a secure channel to set up the IPsec session.
However, the Aggressive mode is faster. The default value in
Vigor router is Main mode.
 IKE phase 1 proposal-To propose the local available
authentication schemes and encryption algorithms to
the VPN peers, and get its feedback to find a match.
Two combinations are available for Aggressive mode
and nine for Main mode. We suggest you select the
combination that covers the most schemes.
IKE phase 2 proposal-To propose the local available

algorithms to the VPN peers, and get its feedback to
find a match. Three combinations are available for both
modes. We suggest you select the combination that
covers the most algorithms.
IKE phase 1 key lifetime-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.
 IKE phase 2 key lifetime-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 Secret (PFS)-The IKE Phase 1 key will

be reused to avoid the computation complexity in
phase 2. The default value is inactive this function.
Local ID-In Aggressive mode, Local ID is on behalf of
the IP address while identity authenticating with
remote VPN server. The length of the ID is limited to 47
characters.
Index(1-15) - Set the wireless LAN to work at certain time
interval only. You may choose up to 4 schedules out of the 15
schedules pre-defined in Applications >> Schedule setup.
The default setting of this field is blank and the function will
always work.
Vigor2133 Series User's Guide