19216811.liveChapter 5 WAN Setup
P-663HN-51 User’s Guide
66
Authentication
Method
The ZyXEL Device 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:
AUTO
- Your ZyXEL Device accepts either CHAP, PAP, or MSCHAP
when requested by this remote node.
CHAP
- Your ZyXEL Device accepts CHAP only.
PAP
- Your ZyXEL Device accepts PAP only.
MSCHAP
- Your ZyXEL Device accepts MSCHAP (Microsoft CHAP)
only.
Enable NAT
Turn on NAT to translate IP addresses between two different networks
(so you can have a private LAN with IP addresses that are different
from the public IP addresses on the WAN. See
Chapter 7 on page 83
for more details.
Enable
Fullcone NAT
This field displays when you enable NAT. In full cone NAT, all requests
from the same private IP address and port are mapped to the same
public source IP address and port. Someone on the Internet only
needs to know the mapping scheme in order to send packets to a
device behind the ZyXEL Device.
The ZyXEL Device uses restricted cone NAT when you disable full cone
NAT.
Enable Firewall
Select this to turn on the ZyXEL Device’s Stateful Packet Inspection
(SPI) firewall. By default the firewall blocks traffic originating from the
WAN from going to the LAN. See
Chapter 8 on page 93
for how to
configure firewall rules.
Dial on demand
Select
Dial on demand
when you don't want the connection up all
the time and specify an idle time-out (in seconds) in the
Inactivity
Timeout
field.
Clear the
Dial on demand
option
to keep the connection up all the
time. The ZyXEL Device will try to bring up the connection
automatically if it is disconnected.
PPP IP extension
Only select this option if your service provider requires it. The
following conditions apply to a connection using PPP IP extension.
•
Only one computer can be connected on the LAN.
•
The ISP only assigns a single public IP address and the LAN
computer uses it on its LAN interface.
•
The firewall and NAT features are disabled.
•
The ZyXEL Device uses DHCP to tell the LAN computer that the
ZyXEL Device is its default gateway and DNS server.
•
The ZyXEL Device extends the ISP’s IP subnet to the LAN
computer.
•
The ZyXEL Device bridges packets between the DSL and LAN
interface, except for packets destined for the ZyXEL Device's LAN
IP address.
Table 16
Advanced Setup > WAN > Add (3: PPPoE) (continued)
LABEL
DESCRIPTION