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21
DI-624S User’s Manual
D-Link Systems, Inc.
Using the Configuration Menu
Home > LAN
LAN is short for Local Area Network. This is considered your internal network. These are the IP set-
tings of the LAN interface for the DI-624S. These settings may be referred to as Private settings. You
may change the LAN IP address if needed. The LAN IP address is private to your internal network
and cannot be seen on the Internet.
Local
Domain Name:
Subnet Mask:
IP Address:
DNS Relay:
Home > WAN > Others > L2TP
(continued)
Auto-reconnect:
If
Enabled
, the DI-624S will automatically connect to your ISP after your system
is restarted or if the PPTP connection is dropped.
Dial on Demand:
If
Enabled
, the DI-624S will connect to your ISP after you initiate an Internet
connection, such as opening an Internet browser.
MTU:
Maximum Transmission Unit-1492 is the default setting-you may need to change
the MTU for optimal performance with your specific ISP.
The IP address of the LAN interface. The default IP address is:
192.168.0.1
The subnet mask of the LAN interface.
The default subnet mask is
255.255.255.0
This field is optional. Enter in the local domain name.
If
Enabled
, the router will use its own IP afddress as the DNS server for the
DHCP clients.
Page 22 / 106
22
DI-624S User’s Manual
D-Link Systems, Inc.
Using the Configuration Menu
Home > DHCP
DHCP
stands for
Dynamic Host Control Protocol
. The DI-624S has a built-in DHCP server. The DHCP
Server will automatically assign an IP address to the computers on the LAN/private network. Be sure
to set your computers to be DHCP clients by setting their TCP/IP settings to “Obtain an IP Address
Automatically”. When you turn your computers on, they will automatically load the proper TCP/IP
settings provided by the DI-624S. The DHCP Server will automatically allocate an unused IP address
from the IP address pool to the requesting computer. You must specify the starting and ending address
of the IP address pool.
Select
Enabled
or
Disabled.
The
default
setting is
Enabled.
The starting IP address for the DHCP server’s IP assignment.
The ending IP address for the DHCP server’s IP assignment.
The length of time for the IP lease. Enter the Lease time. The default setting is
one hour.
Allows the DHCP server to assign the same IP address to a specific MAC address.
IP address specific to the client.
Enter the MAC Address.
Select a DHCP client from the pull-down list; click
Clone
to copy that MAC Address.
DHCP Server:
Starting IP Address:
Ending IP Address:
Lease Time:
Static DHCP:
IP:
MAC Address:
DHCP Client:
Page 23 / 106
23
DI-624S User’s Manual
D-Link Systems, Inc.
Using the Configuration Menu
Advanced > Virtual Server
The DI-624S 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-624S firewall feature filters out unrecognized packets to protect your LAN network so all
computers networked with the DI-624S 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-624S redirects the external service request to the appropriate server
within the LAN network.
The DI-624S is also capable of port-redirection, meaning incoming traffic to a particular port may be
redirected to a different port on the server computer.
Each virtual service that is created will be listed at the bottom of the screen in the Virtual Servers
List. There are pre-defined virtual services already in the table. You may use them by enabling them
and assigning the server IP to use that particular virtual service.
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24
DI-624S User’s Manual
D-Link Systems, Inc.
Using the Configuration Menu
Advanced > Virtual Server
(continued)
Select
Enabled
or
Disabled
.
Enter the name referencing the virtual service.
The server computer in the LAN (Local Area Network) that will be providing the
virtual services.
The protocol used for the virtual service.
The port number of the service used by the Private IP computer.
The port number on the WAN (Wide Area Network) side that will be used to access
the virtual service.
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.
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
Virtual Server:
Name:
Private IP:
Protocol Type:
Private Port:
Public Port:
Schedule:
Example #1:
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25
DI-624S User’s Manual
D-Link Systems, Inc.
Using the Configuration Menu
Example #2:
If you have an FTP server that you wanted Internet users to access by WAN port 2100 and only
during the weekends, you would need to enable it as such. FTP server is on LAN computer
192.168.0.30. FTP uses port 21, TCP.
Name: FTP Server
Private IP: 192.168.0.30
Protocol Type: TCP
Private Port: 21
Public Port: 2100
Schedule: From: 01:00AM to 01:00AM, Sat to Sun
Advanced > Virtual Server
(continued)
Click on this icon to edit the virtual service
Click on this icon to delete the virtual service
All Internet users who want to access this FTP Server must connect to it from port 2100. This
is an example of port redirection and can be useful in cases where there are many of the same
servers on the LAN network.
19216811.live