Draytek 2800 Series - Manual (Page 93)

Vigor2800 Series User’s Guide 89
encryption algorithm from Data Encryption Standard (DES),
Triple DES (3DES), and AES.
Callback Function The callback function provides a callback service only for the
ISDNLAN-to-LAN connection (this feature is useful for i
model only). The remote user will be charged the connection
fee by the telecom.
Check to enable Callback function-Enables the callback
function.
Callback number-The option is for extra security. Once
enabled, the router will ONLY call back to the specified
Callback Number.
Callback budget- By default, the callback function has
limitation of callback period. Once the callback budget is
exhausted, the function will be disabled automatically.
Callback Budget (Unit: minutes)- Specify the time budget
for the dial-in user. The budget will be decreased
automatically per callback connection. The default value 0
means no limitation of callback period.
My WAN IP This field is only applicable when you select PPTP or L2TP
with or without IPSec policy above. The default value is
0.0.0.0, which means the Vigor router will get a PPP IP
address from the remote router during the IPCP negotiation
phase. If the PPP IP address is fixed by remote side, specify
the fixed IP address here.
Remote Gateway IP This field is only applicable when you select PPTP or L2TP
with or without IPSec policy above. The default value is
0.0.0.0, which means the Vigor router will get a remote
Gateway PPP IP address from the remote router during the
IPCP negotiation phase. If the PPP IP address is fixed by
remote side, specify the fixed IP address here.
Remote Network IP/
Remote Network Mask Add a static route to direct all traffic destined to this Remote
Network IP Address/Remote Network Mask through the VPN
connection. For IPSec, this is the destination clients IDs of
phase 2 quick mode.
More Add a static route to direct all traffic destined to more Remote
Network IP Addresses/ Remote Network Mask through the
VPN connection. This is usually used when you find there are
several subnets behind the remote VPN router.
RIP Direction The option specifies the direction of RIP (Routing Information
Protocol) packets. You can enable/disable one of direction
here. Herein, we provide four options: TX/RX Both, TX Only,
RX Only, and Disable.
RIP Version Select the RIP protocol version. Specify Ver. 2 for greatest
compatibility.
For NAT operation, treat
remote sub-net as While communicating with remote subnet, the router can treat
it as private subnet by sending packets with the router’s
private IP address, or treat it as public subnet by sending
packets with the router’s public IP address.