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Using the Configuration Menu
Advanced > Virtual Server
The DI-774 can be configured as a virtual server so that remote users accessing Web
or FTP services via the public IP address can be automatically redirected to local
servers in the LAN (Local Area Network).
The DI-774 firewall feature filters out unrecognized packets to protect your LAN
network so all computers networked with the DI-774 are invisible to the outside world.
If you wish, you can make some of the LAN computers accessible from the Internet
by enabling Virtual Server. Depending on the requested service, the DI-774 redirects
the external service request to the appropriate server within the LAN network.
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Using the Configuration Menu
Advanced > Virtual Server continued
The DI-774 is also capable of port-redirection meaning incoming traffic to a particular
port may be redirected to a different port on the server computer.
E a c h v i r t u a l s e r v i c e t h a t i s c r e a t e d w i l l b e l i s t e d a t t h e b o t t o m of t h e s c r e e n i n t h e
V i r t u a l S e r v e r s L i s t . T h e r e a r e p r e - d e f i n e d v i r t u a l s e r v i c e s a l r e a d y i n t h e t a b l e . Y o u
may use t h e m by enabl i n g t h e m and assi g n i n g t h e s e r v e r I P t o u s e t h a t p a r t i c u l a r
v i r t u a l s e r v i c e .
Virtual Server-
select Enabled or Disabled
Name-
enter the name referencing the virtual service
Private IP-
the server computer in the LAN (Local Area Network) that will be
providing the virtual services.
Protocol Type-
the protocol used for the virtual service
Private Port-
the port number of the service used by the Private IP computer
Public Port-
the port number on the WAN (Wide Area Network)side that will
be used to access the virtual service.
Schedule-
The schedule of time when the virtual service will be enabled.
The schedule may be set to Always, which will allow the
particular service to always be enabled. If it is set to Time,
select the time frame for the service to be enabled. If the
system time is outside of the scheduled time, the service will
be disabled.
Example #1:
If you have a Web server that you wanted Internet users to access at all times, you
would need to enable it. Web (HTTP) server is on LAN (Local Area Network)
computer 192.168.0.25. HTTP uses port 80, TCP.
Name: Web Server
Private IP: 192.168.0.25
Protocol Type: TCP
Private Port: 80
Public Port: 80
Schedule: always
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