ZyXEL nbg-334sh Manual Do Utilizador

Appendix A Product Specifications

ZyXEL NBG-334SH User’s Guide

Wireless Functionality

Allows IEEE 802.11b and/or IEEE 802.11g wireless clients to connect to 

the ZyXEL Device wirelessly. IEEE 802.11g clients can connect using 

the super G function. Enable wireless security (WEP, WPA(2), WPA(2)-

PSK) and/or MAC filtering to protect your wireless network. 

Note: The ZyXEL Device may be prone to RF (Radio 

Frequency) interference from other 2.4 GHz devices 
such as microwave ovens, wireless phones, 
Bluetooth enabled devices, and other wireless LANs.

Firmware Upgrade

Download new firmware (when available) from the ZyXEL web site and 

use the web configurator, an FTP or a TFTP tool to put it on the ZyXEL 

Device.

Note: Only upload firmware for your specific model!

Configuration Backup & 

Restoration

Make a copy of the ZyXEL Device’s configuration and put it back on the 

ZyXEL Device later if you decide you want to revert back to an earl

i

er 

configuration.

Network Address 

Translation (NAT)

Each computer on your network must have its own unique IP address. 

Use NAT to convert a single public IP address to multiple private IP 

addresses for

 

the computers on your network.

Firewall

You can configure firewall on the ZyXEL Device for secure Internet 

access. When the firewall is on, by default, all incoming traffic from the 

Internet to your network is blocked unless it is initiated from your 

network. This means that probes from the outside to your network are 

not allowed, but you can safely browse the Internet and download files 

for example.

Content Filter

The ZyXEL Device blocks or allows access to web sites that you specify 

and blocks access to web sites with URLs that contain keywords that 

you specify. You can define time periods and days during which content 

filtering is enabled. You can also include or exclude particular computers 

on your network from content filtering.
You can also subscribe to category-based content filtering that allows 

your ZyXEL Device to check web sites against an external database.

Bandwidth Management 

You can efficiently manage traffic on your network by reserving 

bandwidth and giving priority to certain types of traffic and/or to particular 

computers.

Time and Date

Get the current time and date from an external server when you turn on 

your ZyXEL Device. You can also set the time manually. These dates 

and times are then used in logs.

Port Forwarding

If you have a server (mail or web server for example) on your network, 

then use this feature to let people access it from the Internet.

DHCP (Dynamic Host 

Configuration Protocol)

Use this feature to have the ZyXEL Device assign IP addresses, an IP 

default gateway and DNS servers to computers on your network.

Dynamic DNS Support

With Dynamic DNS (Domain Name System) support, you can use a 

fixed URL, www.zyxel.com for example, with a dynamic IP address. You 

must register for this service with a Dynamic DNS service provider.

IP Multicast

IP Multicast is used to send traffic to a specific group of computers. The 

ZyXEL Device supports versions 1 and 2 of IGMP (Internet Group 

Management Protocol) used to join multicast groups (see RFC 2236).

IP Alias

IP Alias allows you to subdivide a physical network into logical networks 

over the same Ethernet interface with the ZyXEL Device itself as the 

gateway for each subnet.

Table 92   Firmware Features