ZyXEL Communications ZyWALL 2 Plus - Manual (Page 105)

Chapter 4 Tutorials
ZyWALL 2 Plus User’s Guide
105
10 After the configurations, the Address Mapping screen looks as shown. You still have
one IP address (1.2.3.7) that can be assigned to another internal server when you expand
your network.
Figure 55 Tutorial Example: NAT Address Mapping Done
"
To allow traffic from the WAN to be forwarded through the ZyXEL Device, you
must also create a firewall rule. Refer to
Section 4.2.5 on page 107 for more
information.
4.2.4 Forwarding Traffic from the WAN to a Local Computer
A server NAT address mapping rule allows computers behind the NAT be accessible to the
outside world. To have the ZyWALL forward incoming traffic to a specific computer on your
local network, you should also create a port forwarding (server mapping) rule.
In this example, you want to forward FTP traffic using port 21 to the computer with the IP
address of 192.168.1.39.