Table of Contents
Advertisement
sufficient for most purposes and helpful to people already familiar with SUA in
previous ZyNOS versions.
13. Is it possible to access a server running behind SUA from the outside Internet?
If possible, how?
Yes, it is possible because P-660 delivers the packet to the local server by looking up
to a SUA server table. Therefore, to make a local server accessible to the outside users,
the port number and the inside IP address of the server must be configured in Menu
15.2.1 - NAT Server Setup.
14. When do I need Multi-NAT
•
Make local server accessible from outside Internet
When NAT is enabled the local computers are not accessible from outside. You can
use Multi-NAT to make an internal server accessible from outside.
•
Support Non-NAT Friendly Applications
Some servers providing Internet applications such as some mIRC servers do not allow
users to login using the same IP address. Thus, users on the same network can not
login to the same server simultaneously. In this case it is better to use Many-to-Many
No Overload or One-to-One NAT mapping types, thus each user login to the server
using a unique global IP address.
15. What IP/Port mapping does Multi-NAT support?
NAT supports five types of IP/port mapping. They are: One to One, Many to One,
Many to Many Overload, Many to Many No Overload and Server. The details of the
mapping between ILA and IGA are described as below. Here we define the local IP
addresses as the Internal Local Addresses (ILA) and the global IP addresses as the
Inside Global Address (IGA),
1. One to One
In One-to-One mode, the P-660 maps one ILA to one IGA.
2. Many to One
In Many-to-One mode, the P-660 maps multiple ILA to one IGA. This is equivalent to
SUA (i.e., PAT, port address translation), ZyXEL's Single User Account feature that
previous ZyNOS routers supported (the SUA only option in today's routers).
All contents copyright © 2005 ZyXEL Communications Corporation.
?
P-660 series Support Notes
8
Hide quick links:
Advertisement
Table of Contents
