Draytek vigor2960 series User Manual page 312

If you choose IPsec as the Type, you will get the following screen:
Available parameters are listed as follows:
Item
Profile
Enable
WAN Profile
Local IP/Subnet
Mask
Local Next Hop
Remote Host
Remote IP / Subnet
Mask
More Remote
Subnet
Auth Type
Preshared Key
Security Protocol
DPD Delay
Description
Display the name of the VPN profile.
Check this box to enable such profile.
Choose a wan profile to be used by such profile.
Type the IP address and subnet mask of local host.
Specify the gateway for WAN interface. Usually, use the
default setting (leave it in blank).
Type the WAN IP address for the remote host.
Type the LAN IP address and LAN subnet mask for the
remote host.
Add more remote subnet in this field if required.
The authentication to be used by Pre-Shared Key or RSA
Signature. Choose PSK or RSA for such profile.
Type a pre-shared key for authentication if PSK is selected
as Auth Type.
Choose ESP to specify the IPsec protocol for the
Encapsulating Security Payload protocol. The data will be
encrypted and authenticated. Choose AH to specify the IPsec
protocol for the Authentication Header protocol. The data
will be authenticated but not be encrypted.
DPD means dead peer detection. It is a keep-alive timer. A
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Vigor2960 Series User's Guide