ZyXEL Communications P-661H Series User Manual

Chapter 23 Product Specifications

P-661H/HW Series User’s Guide

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. You can put it back on 

the ZyXEL Device later if you decide 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 your public IP address(es) to multiple private IP 

addresses for

 

the computers on your network.

Port Forwarding

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

you can 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.

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.

Logging and Tracing

Use packet tracing and logs for troubleshooting. You can send logs from 

the ZyXEL Device to an external syslog server.

PPPoE

PPPoE mimics a dial-up Internet access connection.

Universal Plug and Play 

(UPnP)

A UPnP-enabled device can dynamically join a network, obtain an IP 

address and convey its capabilities to other devices on the 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 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.

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.

Remote Managemet

This allows you to decide whether a service (HTTP or FTP traffic for 

example) from a computer on a network (LAN or WAN for example) can 

access the ZyXEL Device.

Table 117   Firmware Specifications