ZyXEL Communications NSA-220 ユーザーズマニュアル

Chapter 15 Troubleshooting

NSA-220 User’s Guide

1 Make sure the files are a format supported by iTunes. See 

2 If you have files from the iTunes Store that use DRM, you need to use your Apple 

account ID and password to authorize other computers to play the files. Apple permits 
you to authorize up to five computers at a time. To authorize a computer, open iTunes 
and click Store > Authorize Computer. 

3 If you are connecting through a NAT router, make sure that TCP port 3689 and UDP port 

5353 are open for traffic on both the server and the client and all points in between 
(especially the NAT router). If your router includes a firewall, make sure it also allows 
TCP port 3689 and UDP port 5353 traffic.

V

The download list or broadcatching items are missing after I removed a hard 
drive.  

The NSA’s download and broadcatching lists are stored on the system volume. If you have 
two JBOD volumes, it is possible to remove one and still use the other. However if you 
remove the system volume, you may lose the download and broadcasting lists. With two 
JBOD volumes, the hard disk that was installed first is usually the system volume. 

V

A web-published share cannot be accessed by web browser from the Internet. 

• Make sure the person trying to access the share is using the correct web address (and port 

number if the NSA’s web publishing feature is not using port 80). See 

 for details.

• Make sure the publishing feature is turned on and the share is in the list of published 

shares.

• Make sure the person trying to access the share is using Internet Explorer 6.0 (and later) or 

Firefox 1.07 (and later).

• You need to use a public address to access the NSA’s web-published shares from the 

Internet. If your NSA uses a private IP address, use the public IP address of your Internet 
gateway (firewall) and configure NAT or port forwarding on your Internet gateway and 
possibly firewall rules in order to let people access the NSA’s web-published shares from 
the Internet.  

• Make sure the firewall’s public IP address is static or that the firewall uses a Dynamic 

Domain Name (DDNS).