ZyXEL Communications 2602HWL-DXA 用户手册

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Prestige 2602HWL-DxA Support Notes 
 
 
 
All contents copyright (c) 2005 ZyXEL Communications Corporation.   
156
Does Prestige support dynamic IP addressing?   
The Prestige supports either a static or dynamic IP address from ISP.   
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.  The  Prestige  Internet  Access  Sharing 
Router works like an intelligent router that route between the virtual IP and the real IP. 
How does e-mail work through the Prestige?   
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  xxx@mycompany.com.  Joe  and 
Debbie will be able to send e-mail through Prestige Internet Access Device using jane@mycompany.com and 
debbie@mycompany.com 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  mycompany@ispname.com.  Jane  and  John  will  be  able  to  send 
e-mail  through  Prestige  Internet  Access  Sharing  Router  using  "jane"<mycompany@ispname.com>  and 
"john"<mycompany@ispname.com> 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.   
Is it possible to access a server running behind SUA from the outside Internet? If possible, 
how?  
Yes, it is possible because Prestige 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 - 
SUA Server Setup
.   
What DHCP capability does the Prestige support?   
The Prestige supports DHCP client (Ethernet encap) on the WAN port and DHCP server on the LAN port. The 
Prestige's DHCP client allows it to get the Internet IP address from ISP automatically if your ISP use DHCP as 
a  method  to  assign  IP  address.  The  Prestige's  internal  DHCP  server  allows  it  to  automatically  assign  IP  and 
DNS addresses to the clients on the local LAN.