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Chapter 9 Network
Media Server User’s Guide
178
9.5 UPnP Port Mapping Screen
Use UPnP (Universal Plug and Play) port mapping to allow access from the WAN to services you
select on the NSA. It is recommended that you place the NSA behind an Internet gateway firewall
device to protect the NSA from attacks from the Internet (see RAID and Data Protection on page
173 for firewall type suggestions). Many such Internet gateways use UPnP to simplify peer-to-peer
DNS DNS (Domain Name System) is for mapping a domain name to its corresponding IP
address and vice versa. If you have the IP address(es) of the DNS server(s), enter
them.
Dynamic Select the option to have the NSA get a DNS server address automatically.
Static Select this option to choose a static DNS server address. Type the DNS server IP
address(es) into the fields below.
Primary DNS
Server
Type a primary DNS server IP address.
Secondary DNS
Server
Type a secondary DNS server IP address.
HTTP (Web Configurator)
Enable Another Web
Configuration Port
Select this to configure an additional HTTP port for accessing the web configurator.
Specify a number in the Port Number field.
Jumbo Frames Jumbo frames improve network performance. You must have a 1 Gbps (Gigabit
Ethernet) network that supports jumbo frames. Select the largest size of frame that all
of your network devices (including computer Ethernet cards and switches, hubs, or
routers) support.
When enabled, you can choose between 4 KB, 8 KB, and 9 KB frame sizes.
Note: If you enable jumbo frames on the NSA in a network that does not support them,
you will lose access to the NSA. If this occurs, you will have to restore the factory
default configuration. Push the RESET button on the NSA’s rear panel and
release it after you hear a beep.
Network Diagnostic
Tool
Use this section to test the network connection to a particular IP address or domain
name. Select an address or type it into the field. Then click Ping to have the NSA send
a packet to test the network connection.
• Successfully pinged host - The NSA is able to “ping” the host, the network
connection is OK.
• Unable to ping host - The NSA is able to “ping” the selected host.
Apply Click this to save your TCP/IP configurations. After you click Apply, the NSA restarts.
Wait until you see the Login screen or until the NSA fully boots and then use the NAS
Starter Utility to rediscover it.
Reset Click this to restore your previously saved settings.
Table 33 Network > TCP/IP (continued)
LABEL DESCRIPTION