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Step 7 ¡ Ð
Setup Server Rules
Insert a virtual server rule by clicking the Insert
button.
Step 8 ¡ Ð
Customize the Rule
Customize the rule name as the ftpServer. For
any packets with its destination IP address
equaling to the WAN1 IP (61.2.1.1) and
destination port equaling to 44444. DFL-1500 will
translate the packet's destination IP/port into
10.1.1.5/21. Check the Passive FTP client
to maximize the compatibility of the FTP protocol.
This is useful if you want to provide connectivity to
passive FTP clients. For passive FTP clients, the
server at DMZ will return them the private IP
address (10.1.1.5) and the port number for the
clients to connect back for data transmissions.
Since the FTP clients at the WAN side cannot
connect to a private-IP (ex.10.1.1.5) through the
internet. The data connections would be fail. After
enabling this feature, the DFL-1500 will translate
the private IP/port into an IP/port of its own. Thus
the problem is gracefully solved. Click Apply to
proceed.
Step 9 ¡ Ð
View the Result
Now any request towards the DFL-1500's WAN1
IP (61.2.1.1) with dest. port 44444 will be
translated into a request towards 10.1.1.5 with
port 21, and then be forwarded to the 10.1.1.5.
The FTP server listening at port 21 in 10.1.1.5
will pick up the request.
ADVANCED SETTINGS > NAT > Virtual Servers
ADVANCED SETTINGS > NAT > Virtual Servers > Insert
ADVANCED SETTINGS > NAT > Virtual Servers
12
Part I
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