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TCP Port Forwards: In the first Start and End fields, define the port range for
the incoming TCP service you want to forward. In the IP Address field, enter
the IP address of the virtual server to which packets are forwarded. The Start/
End fields on the right side define the port range for the TCP service on the virtual
server.
For example, the setting below allows access on virtual server 192.168.10.210
using FTP service.
Start
20
UDP Port Forwards: The configuration is the same as setting TCP Port Forwards,
only that the entry applies to UDP service.
When the router gets outside TCP/UDP requests destined for the WAN port, it
determines whether the services are allowed according to your forwarding settings.
For example, if you do not specify FTP virtual service in the Forwarding table,
incoming FTP requests (identified by port number in packets) are blocked or
otherwise sent to the DMZ host (if specified). On the other hand, if an FTP forward-
ing entry has been set up, the FTP requests will be forwarded to the specified
computer.
NOTE: If you set multiple forwarding entries, they will be used in order
from the first entry. In the example below, incoming FTP requests will be
sent to IP Address 192.168.10.220 not to 192.168.10.210.
Start
20
20
If you have a Web server on your network...
If you enable WAN Management (allow external access from the WAN port, see
the Administration Configuration section) and want to designate another Web
server on your local network, perform either of the procedures below to avoid port
conflicts:
End
IP Address
21
192.168.10.210
End
IP Address
25
192.168.10.220
21
192.168.10.210
Forwarding
Start
End
20
21
Start
End
20
25
20
21
4-27
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