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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 equaling to the
WAN1 IP (61.2.1.1) and destination port
equaling to 44444, ask DFL-1500 to 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 will return them the private IP address and
the port number for them to connect back to do
data transmissions. Since the private IP from
them cannot be routed to our zone, the data
connections would 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.
Activate this rule
Status
Rule name
Dest IP / Netmask
Service
Type
Condition
Dest Port
Passive FTP client
Translated dest IP
Action
Translated dest port
ADVANCED SETTINGS > NAT > Virtual Servers
ADVANCED SETTINGS > NAT > Virtual Servers > Insert
FIELD
The Virtual Server rule is enabled or not
The Virtual Server rule name
The public IP address and IP netmask of the Virtual
Server.
Any, TCP or UDP
Port is Single or Range
The port number in the internet.
If the Passive FTP client is checked, it will connect to the
internal DMZ FTP server of DFL-1500 when FTP client
uses passive mode. Otherwise, it will not work.
The IP address which is actually transferred to the
internal DMZ
The port number which is actually transferred to the
internal DMZ.
Table 6-4 Add a Virtual Server rule
DESCRIPTION
42
Part II
EXAMPLE
enabled
ftpServer
61.2.1.1 /
255.255.255.255
TCP
Single
44444
enabled
10.1.1.5
21
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