Nat General Setup - ZyXEL Communications P-2612HW-F1 User Manual

Chapter 9 NAT
before forwarding the packet to the WAN side. When the response comes back,
NAT translates the destination address (the inside global address) back to the
inside local address before forwarding it to the original inside host.
Port Forwarding
A port forwarding set is a list of inside (behind NAT on the LAN) servers, for
example, web or FTP, that you can make visible to the outside world even though
NAT makes your whole inside network appear as a single computer to the outside
world.
SUA (Single User Account) Versus NAT
SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that
supports two types of mapping, Many-to-One and Server. The ZyXEL Device also
supports Full Feature NAT to map multiple global IP addresses to multiple private
LAN IP addresses of clients or servers using mapping types as outlined in
on page
• Choose SUA Only if you have just one public WAN IP address for your ZyXEL
Device.
• Choose Full Feature if you have multiple public WAN IP addresses for your
ZyXEL Device.
Finding Out More
See Section 9.5 on page 181

9.2 NAT General Setup

Note: You must create a firewall rule in addition to setting up SUA/NAT, to allow traffic
from the WAN to be forwarded through the ZyXEL Device.
172
185.
for advanced technical information on NAT.
Table 46
P-2612HW-F1 User's Guide