Prestige 2302RL Support Notes
All contents copyright (c) 2007 ZyXEL Communications Corporation.
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Monitor. If the Prestige is using a fixed (static) IP address, you can always use this fixed IP address to
connect to the PPTP server.
The following figure shows an example VPN dial-up screen. The VPN Server field is 140.113.1.225
which is a dynamic IP address assigned to the Prestige by the ISP. Make sure you enter the WAN IP
address of the Prestige correctly; otherwise, the VPN connection will fail. After the VPN connection is
established, you can start using Internet applications (such as on-line games).
Using NAT / Multi-NAT
What is Multi-NAT?
NAT (Network Address Translation-NAT RFC 1631) is the translation of an Internet Protocol address used
within one network to a different IP address known within another network. One network is designated the
inside
network and the other is the
outside
. Typically, a company maps its local inside network addresses to one
or more global outside IP addresses and "unmaps" the global IP addresses on incoming packets back into local
IP addresses. The IP addresses for the NAT can be either fixed or dynamically assigned by the ISP. In addition,
you can designate servers, e.g., a web server and a telnet server, on your local network and make them
accessible to the outside world. If you do not define any servers, NAT offers the additional benefit of firewall
protection. In such case, all incoming connections to your network will be filtered out by the Prestige, thus
preventing intruders from probing your network.
