Vonage VDV21-VD User Guide - Page 110

Vonage V-Portal User Guide DNS Domain Name Service. Similar to DDNS, DNS translates domain names to IP addresses and IP addresses to domain names for machines with static IP addresses. Filter 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 the LAN or to block a specific type of Internet traffic. IP addresses are used to identify which devices are restricted. Firewall A firewall protects the resources of a private network from unauthorized access by users from other networks. Firewalls also control what outside resources your 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. FQDN 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 addressed to. For example, www.vonage.com is a Fully Qualified Domain Name. H H www is the host, vonage is the second level domain name and .com is the top- level domain name. Gateway A gateway is a network node (computer) that serves as an entrance to another 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 IP address is 192.168.15.1. 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. IPSec 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 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. ISP Internet Service Provider. An ISP is a company that provides you access to the Internet and other related services. Java Applet A computer program written in the Java programming language that runs within another program. For example, Java Applets can run within your web browser. When used in this context, Java Applets are used to provide interactive features that cannot be provided by HTML. Keep Alive The Keep Alive is a timer that the Vonage device uses to interact with your ISP to keep the Internet connection alive. LAN 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 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 110 Section 11 which explains limitations on Warranty, Remedy and Liability.