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31
D-Link DNS-3±1 User Manual
Section 3 - Configuration
FTP Server
FTP Server 
Settings
FTP Server 
Status
The DNS-321 is equipped with a built in FTP Server. The server is easy to configure and allows users access to important 
data whether they are on the local network or at a remote location. The FTP server can be configured to allow user 
access to specific directories, and will allow up to 10 users to access the DNS-321 simultaneously.
This section contains the configuration 
settings for the DNS-321 FTP Server (refer 
to the next page).
The current settings and status of the 
DNS-321 FTP Server are displayed here.
FTP Access 
List
The FTP access rights for users and groups 
can be added and edited here.
Category
Determines whether the FTP server rule will 
apply to an individual user or a group.
User
Select the group or user the FTP server rule 
will apply to.
Folder
Browse and select the folder or directory you 
are granting FTP access to. 
Select 
root 
to
grant access to all volumes.
Permission
Set the user or group permission to Read 
Only or Read/Write.
FTP Account 
Settings
This section contains the user and group 
configuration settings for access to the FTP 
folder to the DNS-321.
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3±
D-Link DNS-3±1 User Manual
Section 3 - Configuration
FTP Server Settings
Max User
Set the maximum amount of users that 
can connect to the FTP server.
Idle Time
Set the amount of time a user can remain 
idle before being disconnected.
Port
Set the FTP port. 
Default is 21.
Flow Control
Allow you to limit the amount of 
bandwidth available for each user.
Most standard FTP clients like Windows 
FTP, only support Western European 
codepage when transferring files. 
Northern European, Central European, 
Traditional and Simplified Chinese as 
well as Cyrillic codepage support has 
been added for non standard FTP 
clients that are capable of supporting 
these character sets.
Apply
Click 
Apply
to save your rule.
Client Language
FTP Access List
List all defined FTP Rules.
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33
D-Link DNS-3±1 User Manual
Section 3 - Configuration
If you are behind a router, you will need to forward the FTP port from the router to the DNS-321. 
Additional filtering 
and firewall settings may need to be modified on your router to allow FTP Access to the DNS-321 from the Internet. 
Once the port has been forwarded on the router, users from the internet will access the FTP server through the WAN 
IP address of the router.
If you are using a D-Link router, such as the WBR-2310 used in the example below, your port forwarding rule should 
be similar to the following:
Name
Name the DNS-321 FTP server 
rule.
IP Address
Enter the IP address of the 
DNS-321.
Public Port
Enter the public FTP port. 
By 
default, the port is 21.
Private Port
Enter the private FTP port. 
By 
default, the port is 21.
Traffic Type
Set the traffic type to TCP.
If you use an FTP port other than 21, then users accessing the FTP server using an FTP client will have to 
specify the non-standard port, and3 users who are using a browser will have to specify the port in the URL 
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3²
D-Link DNS-3±1 User Manual
Section 3 - Configuration
UPnP AV Server
UPnP AV 
Server
Folder
Select Enable or Disable to enable 
or disable the DNS-321 UPnP AV 
server.
The DNS-321 features a UPnP AV Server. This server provides the ability to stream photos, music and videos to UPnP 
AV compatible network media players. If the server is enabled, the DNS-321 will be automatically detected by UPnP 
AV compatible media players on your local network.
Specifies the folder or directory 
that will be shared by the UPnP AV 
server. 
Select 
root
to share all files 
on all volumes, or click 
Browse
to 
select a specific folder.
Auto Refresh
Set the device to auto refresh your 
media every 5 minutes up to every 
24hrs.
Refresh
Click 
Refresh
after adding new files 
to be used by UPnP AV compatible 
devices.
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3³
D-Link DNS-3±1 User Manual
Section 3 - Configuration
iTunes Server
iTunes Server
Folder
Password
The DNS-321 features an iTunes Server. This server provides the ability to share music and videos to computers on 
the local network running iTunes. If the server is enabled, the DNS-321 will be automatically detected by the iTunes 
program and the music and videos contained in the specified directory will be available to stream over the network.
Select 
Enable
or 
Disable
to enable 
or disable the DNS-321 iTunes 
server.
Specifies the folder or directory that 
will be shared by the iTunes server. 
Select root to share all files on all 
volumes, or click 
Browse
to select 
a specific folder.
Sets password for the iTunes 
server. (Optional)
Auto Refresh
Set the device to auto refresh your 
media every 5 minutes up to every 
24hrs.
Refresh
Click 
Refresh
after adding new files 
to be used with iTunes.
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