Vonage VDV21-VD User Manual page 110

Domain Name Service. Similar to DDNS, DNS translates domain names to IP
DNS addresses and IP addresses to domain names for machines with static IP
addresses.
Filters define which network devices can transmit and receive data to/from the
Internet. Filters can be used to block Internet traffic to specific network devices on
Filter
the LAN or to block a specific type of Internet traffic. IP addresses are used to
identify which devices are restricted.
A firewall protects the resources of a private network from unauthorized access by
users from other networks. Firewalls also control what outside resources your
Firewall users have access to. Each network packet, traveling both to and from a device on
your network, is examined to determine whether or not to allow it to be forwarded
to its destination.
Fully Qualified Domain Name. A FQDN is that portion of the URL (Uniform
Resource Locator) that fully identifies the node that an Internet request is
FQDN addressed to. For example,
www is the host, vonage is the second level domain name and .com is the top-
level domain name.
A gateway is a network node (computer) that serves as an entrance to another
Gateway network. The gateway enables networks that use different protocols to exchange
information.
Internet Protocol. IP is the protocol or method by which data is sent from one
computer to another on the Internet. IP Address The IP address is a unique
address that is used to identify and communicate with devices on a network. The
address is written as four sets of numbers separated by periods. An example of an
IP address is 192.168.15.1.
IP
In very simple terms you can think of your IP address like your street address.
Every residence has a street address so the post office knows where to deliver
your mail. Every device on the Internet needs an IP address so the data for a
particular device can be delivered appropriately.
IP Security. In simple terms, it is the security method used for protecting the data
sent over the Internet. It is often used to implement Virtual Private Networks
(VPN).
IPSec
IPSec is a suite of protocols for securing IP communications. IPSec supports
secure exchange of packets at the IP layer. Packets in the data stream are
authenticated and encrypted.
Internet Service Provider. An ISP is a company that provides you access to the
ISP
Internet and other related services.
A computer program written in the Java programming language that runs within
another program. For example, Java Applets can run within your web browser.
Java Applet
When used in this context, Java Applets are used to provide interactive features
that cannot be provided by HTML.
The Keep Alive is a timer that the Vonage device uses to interact with your ISP to
Keep Alive
keep the Internet connection alive.
Local Area Network. A LAN is a group of computers and related devices that share
a common communications line or wireless link. The connected devices are
LAN
typically within a small geographic area such as office building or a home. A LAN is
what makes it possible for your V-Portal, computer and perhaps other devices to
View the Terms of Service by visiting the Vonage website at www.vonage.com/tos. Pay particular attention to
Section 11 which explains limitations on Warranty, Remedy and Liability.
Vonage V-Portal User Guide
w ww.vonage.com
H
is a Fully Qualified Domain Name.
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