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Reference Manual for the Broadband Voice Adapter TA612V
About This Manual
1-3
202-10037-01, March 2005
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Page 12 / 126
Reference Manual for the Broadband Voice Adapter TA612V
1-4
About This Manual
202-10037-01, March 2005
Page 13 / 126
Introduction
2-1
202-10037-01, March 2005
Chapter 2
Introduction
Congratulations on your purchase of the NETGEAR
®
TA612V Broadband Voice Adapter. This
chapter describes the features of the NETGEAR TA612V Broadband Voice Adapter.
Key Features
The TA612V Broadband Voice Adapter connects your up two phones to your broadband Internet
service. It connects your local area network (LAN) to the Internet through an external access
device such as a cable modem or DSL modem, and provides access to your local network.
The TA612V adapter provides you with multiple web content filtering options, plus browsing
activity reporting and instant alerts via e-mail. Parents and network administrators can establish
restricted access policies based web site addresses and address keywords, and share high-speed
cable/DSL Internet access for up to 252 computers. In addition to the Network Address
Translation (NAT) feature, the built-in firewall protects you from hackers.
With minimum setup, you can install and use the router within minutes.
The TA612V adapter provides the following features:
•
Two RJ-11 telephone lines.
•
One Ethernet port of the built in 10/100 Mbps switch enable local computers to easily share
access to the Internet.
•
Voice over data prioritization ensures high-quality telephone service.
•
Front panel LEDs for easy monitoring of status and activity.
•
Permits simultaneous usage of phone lines and high speed data services.
•
Flash memory for firmware upgrade.
•
Easy, web-based setup for installation and management.
•
Content Filtering and Site Blocking Security.
•
Extensive Protocol Support.
•
Login capability.
•
Front panel LEDs for easy monitoring of status and activity.
Page 14 / 126
Reference Manual for the Broadband Voice Adapter TA612V
2-2
Introduction
202-10037-01, March 2005
Voice Features
The TA612V Broadband Voice Adapter lets you use the full range of features in your voice
account.
•
Get your voicemail messages by phone, Web, or E-mail.
•
Turn call waiting on or off. Easily switch between calls when you are using call waiting.
•
Use Caller ID with any phone device that has Caller ID enabled. You can also block your
Caller ID when you make a call.
A Powerful, True Firewall with Content Filtering
Unlike simple Internet sharing NAT routers, the TA612V is a true firewall, using stateful packet
inspection to defend against hacker attacks. Its firewall features include:
•
Denial of Service (DoS) protection.
Automatically detects and thwarts DoS attacks such as Ping of Death, SYN Flood, LAND
Attack, and IP Spoofing.
•
Blocks unwanted traffic from the Internet to your LAN.
•
Blocks access from your LAN to Internet locations or services that you specify as off-limits.
•
Logs security incidents.
The TA612V will log security events such as blocked incoming traffic, port scans, attacks, and
administrator logins. You can configure the router to E-mail the log to you at specified
intervals. You can also configure the router to send immediate alert messages to your E-mail
address or E-mail pager whenever a significant event occurs.
•
The TA612V prevents objectionable content from reaching your computers. The router allows
you to control access to Internet content by screening for keywords within web addresses. You
can configure the router to log and report attempts to access objectionable Internet sites.
Security
The TA612V adapter is equipped with several features designed to maintain security, as described
in this section.
Page 15 / 126
Reference Manual for the Broadband Voice Adapter TA612V
Introduction
2-3
202-10037-01, March 2005
•
Computers Hidden by NAT
: NAT opens a temporary path to the Internet for requests
originating from the local network. Requests originating from outside the LAN are discarded,
preventing users outside the LAN from finding and directly accessing the computers on the
LAN.
•
Port Forwarding
: Although NAT prevents Internet locations from directly accessing the
computers on the LAN, the router allows you to direct incoming traffic to specific computers
based on the service port number of the incoming request, or to one designated “DMZ” host
computer. You can specify forwarding of single ports or ranges of ports.
•
Port Triggering
: Port Triggering is an advanced feature that can be used to easily enable
gaming and other internet applications. Port Forwarding is typically used to enable similar
functionality, but it is static and has some limitations.
Autosensing Ethernet Connections with Auto Uplink
With its internal 3-port 10/100 switch, the TA612V can connect to either a 10 Mbps standard
Ethernet network or a 100 Mbps Fast Ethernet network. Both the LAN and WAN interfaces are
autosensing and capable of full-duplex or half-duplex operation.
The router incorporates Auto Uplink
TM
technology. Each Ethernet port will automatically sense
whether the Ethernet cable plugged into the port should have a ‘normal’ connection such as to a
computer or an ‘uplink’ connection such as to a switch or hub. That port will then configure itself
to the correct configuration. This feature also eliminates the need to worry about crossover cables,
as Auto Uplink will accommodate either type of cable to make the right connection.
Extensive Protocol Support
The TA612V adapter supports the Transmission Control Protocol/Internet Protocol
(TCP/IP) and Routing Information Protocol (RIP). For further information about TCP/IP, refer to
Appendix B, “Network and Routing Basics
.”
•
IP Address Sharing by NAT
: The TA612V adapter allows several networked computers to
share an Internet account using only a single IP address, which may be statically or
dynamically assigned by your Internet service provider (ISP). This technique, known as NAT,
allows the use of an inexpensive single-user ISP account.

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