Draytek Vigor3900 User Manual page 360

VoIPon www.voipon.co.uk sales@voipon.co.uk Tel: (0)330 088 0195 Fax: +44 (0)1245 808299
Item Description
Enable GRE Check the box to enable the function.
Function
Local GRE IP The virtual IP address of the router, specified for this tunnel.
Remote GRE IP The virtual IP address of the remote client, specified for this
tunnel.
Auto Generate Click Enable to generate the GRE key by the system
GRE Key automatically.
If you click Disable, you need to type GRE key manually.
GRE In Key Type the hexadecimal number as GRE In Key. This value is
used for the router to authenticate the source of the packet.
The length is 4 bytes.
GRE Out Key Type the hexadecimal number as GRE Out Key. This value
is used for the remote client to authenticate the source of the
packet. The length is 4 bytes.
The Proposal tab lists encryption and authentication algorithms to be negotiated with
the remote IPsec peer. Change settings to meet the security requirement.
Available parameters are listed as follows:
Item Description
IKE Phase1 Propose the local available authentication schemes and
Proposal (Dial-Out) encryption algorithms to the VPN peers, and get its
feedback to find a match.
IKE Phase1 Propose the local available algorithms to the VPN peers,
Authentication and get its feedback to find a match.
(Dial-Out)
IKE Phase2 Propose the local available authentication schemes and
Proposal (Dial-Out) encryption algorithms to the VPN peers, and get its
352 Vigor3900 Series User's Guide