ZyXEL Communications ZYAIR, User Manual

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ZyAIR Wireless Gateway Series User’s Guide
4-2 System Screens
Table 4-1 System General Setup
LABEL DESCRIPTION
System Name Type a descriptive name for identification purposes. Some ISPs check this name, so it
is recommended you enter your computer's "Computer name"
This name can be up to 30 alphanumeric characters long. Spaces are not allowed, but
dashes "-" and underscores "_" are accepted.
Domain Name Type the domain name (if you know it) here. If you leave this field blank, the ISP may
assign a domain name via DHCP. The domain name entered by you is given priority
over the ISP assigned domain name.
Administrator
Inactivity Timer Type how many minutes a management session (either via the web configurator or
SMT) can be left idle before the session times out.
The default is 5 minutes. After it times out you have to log in with your password again.
Very long idle timeouts may have security risks.
A value of "0" means a management session never times out, no matter how long it
has been left idle (not recommended).
System DNS Servers
First DNS Server
Second DNS
Server
Third DNS
Server
Select From ISP if your ISP dynamically assigns DNS server information (and the
ZyAIR's WAN IP address). The field to the right displays the (read-only) DNS server IP
address that the ISP assigns.
Select
User-Defined if you have the IP address of a DNS server. Enter the DNS
server's IP address in the field to the right. If you chose User-Defined , but leave the IP
address set to 0.0.0.0, User-Defined changes to None after you click Apply . If you set
a second choice to User-Defined , and enter the same IP address, the second User-
Defined changes to None after you click Apply .
Select None if you do not want to configure DNS servers. If you do not configure a
DNS server, you must know the IP address of a machine in order to access it.
Apply Click Apply to save your changes back to the ZyAIR.
Reset
Click Reset to reload the previous configuration for this screen.
4.3 Dynamic DNS
Dynamic DNS allows you to update your current dynamic IP address with one or many dynamic DNS
services so that anyone can contact you (in NetMeeting, CU-SeeMe, etc.). You can also access your FTP
server or web site on your own computer using a DNS-like address (for instance myhost.dhs.org, where
myhost is a name of your choice) that will never change instead of using an IP address that changes each
time you reconnect. Your friends or relatives will always be able to call you even if they don't know your IP
address.