ZyXEL Communications Wireless Gateway Series 사용자 설명서

다운로드
페이지 420
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.