Chapter 9 Network

Table 33 Network > TCP/IP (continued)

LABEL

DESCRIPTION

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

Type a primary DNS server IP address.

Server

 

 

 

Secondary DNS

Type a secondary DNS server IP address.

Server

 

 

 

HTTP (Web Configurator)

 

 

Enable Another Web

Select this to configure an additional HTTP port for accessing the web configurator.

Configuration Port

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

Use this section to test the network connection to a particular IP address or domain

Tool

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.

 

 

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

178

 

Media Server User’s Guide