ZyXEL Communications 2WG User Manual
Page 223
ZyWALL 2WG Support Notes
All contents copyright (c) 2006 ZyXEL Communications Corporation.
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A08. How can I configure the ZyWALL?
Telnet remote management- CLI command line
Web browser- web server embedded for easy configurations
A09. What can we do with ZyWALL?
Browse the World Wide Web (WWW), send and receive individual e-mail, and up/download data on the
internet. These are just a few of many benefits you can enjoy when you put the whole office on-line with the
ZyWALL Internet Access Sharing Router.
A10. Does ZyWALL support dynamic IP addressing?
The ZyWALL supports both static and dynamic IP address from ISP.
A11. What is the difference between the internal IP and the real IP from my ISP?
Internal IPs is sometimes referred to as virtual IPs. They are a group of up to 255 IPs that are used and
recognized internally on the local area network. They are not intended to be recognized on the Internet. The real
IP from ISP, instead, can be recognized or pinged by another real IP on the internet. The ZyWALL Internet
Access Sharing Router works like an intelligent router that route between the virtual IP and the real IP.
A12. How does e-mail work through the ZyWALL?
It depends on what kind of IP you have: Static or Dynamic. If your company has a domain name, it means
that you have a static IP address. Suppose your company's e-mail address is [email protected]. Joe
and Debbie will be able to send e-mail through ZyWALL Internet Access Sharing Router using
[email protected] and [email protected] respectively as their e-mail addresses. They will be
able to retrieve their individual private and secure e-mail, if they have been assigned the proper access
right.
If your company does not have a domain name, it means that your ISP provides you with a dynamic IP
address. Suppose your company's e-mail address is [email protected]. Jane and John will be
able to send e-mail through ZyWALL Internet Access Sharing Router using
"jane"<[email protected]> and "john"<[email protected]> respectively as their
e-mail addresses. Again, they will be able to retrieve their individual private and secured e-mail, if they
have been assigned the proper access right.
A13. Is it possible to access a server running behind NAT from the outside Internet? If
possible, how?
Yes, it is possible because ZyWALL delivers the packet to the local server by looking up to a NAT server