ZyXEL Communications 5 Series User Manual

Page of 824
 Chapter 9 WAN Screens
ZyWALL 5/35/70 Series User’s Guide
191
Authentication 
Type
The ZyWALL supports PAP (Password Authentication Protocol) and CHAP 
(Challenge Handshake Authentication Protocol). CHAP is more secure than PAP; 
however, PAP is readily available on more platforms.
Use the drop-down list box to select an authentication protocol for outgoing calls. 
Options are:
CHAP/PAP - Your ZyWALL accepts either CHAP or PAP when requested by this 
remote node. 
CHAP - Your ZyWALL accepts CHAP only. 
PAP - Your ZyWALL accepts PAP only. 
Nailed-up
Select Nailed-Up if you do not want the connection to time out.
Idle Timeout
This value specifies the time in seconds that elapses before the ZyWALL 
automatically disconnects from the PPTP server.
PPTP 
Configuration
My IP Address
Type the (static) IP address assigned to you by your ISP.
My IP Subnet 
Mask
Your ZyWALL will automatically calculate the subnet mask based on the IP 
address that you assign. Unless you are implementing subnetting, use the subnet 
mask computed by the ZyWALL.
Server IP Address
Type the IP address of the PPTP server.
Connection ID/
Name
Type your identification name for the PPTP server.
WAN IP Address 
Assignment 
Get automatically 
from ISP 
Select this option If your ISP did not assign you a fixed IP address. This is the 
default selection. 
Use Fixed IP 
Address
Select this option If the ISP assigned a fixed IP address. 
My WAN IP 
Address
Enter your WAN IP address in this field if you selected Use Fixed IP Address
Advanced Setup
Enable NAT 
(Network Address 
Translation)
Network Address Translation (NAT) allows the translation of an Internet protocol 
address used within one network (for example a private IP address used in a local 
network) to a different IP address known within another network (for example a 
public IP address used on the Internet). 
Select this checkbox to enable NAT.
For more information about NAT see 
.
RIP Direction
RIP (Routing Information Protocol) allows a router to exchange routing 
information with other routers. The RIP Direction field controls the sending and 
receiving of RIP packets. 
Choose BothNoneIn Only or Out Only.
When set to Both or Out Only, the ZyWALL will broadcast its routing table 
periodically. 
When set to Both or In Only, the ZyWALL will incorporate RIP information that it 
receives.
When set to None, the ZyWALL will not send any RIP packets and will ignore any 
RIP packets received. 
By default, RIP Direction is set to Both.
Table 44   NETWORK > WAN > WAN (PPTP Encapsulation) (continued)
LABEL
DESCRIPTION