Motorola VT2142 Stateful, Inspection, Static filter, Static IP address, Subnet mask, Subnetwork

Overview Installation Troubleshooting Contact FAQ

Configuration: Basic Advanced TCP/IP

Glossary License

stateful	A type of firewall that tracks each connection traversing all firewall interfaces to ensure validity. In
inspection	addition to examining the source and destination in the packet header based on static rules, a
	stateful inspection firewall:
	• Examines packet headers on context established by previous packets that traversed the firewall
	• Monitors the connection state and saves it in a table
	• Closes ports until a connection to a specific port is requested
	• May examine the packet contents up through the application layer to determine more than just the
	source and destination
	A stateful-inspection firewall is more advanced than a static filter firewall.
static filter	A type of firewall that examines the source and destination in the packet header based on
	administrator-defined rules only.
static IP address	An IP address that is permanently assigned to a host. Normally, a static IP address must be
	assigned manually. The opposite of dynamic IP address.
subnet mask	A bit mask that is logically ANDed with the destination IP address of a packet to determine the
	network address. A router routes packets using the network address.
subnetwork	A part of a network; commonly abbreviated “subnet.” When subnetting is used, the host portion of
	the IP address is divided into a subnet and host number. Hosts and routers use the subnet mask to
	identify the bits used for the network and subnet number.
TCP	Transmission Control Protocol provides reliable transport over the network for data transmitted using
	IP. It defines rules and procedures for data exchange.
TCP/IP	The Transmission Control Protocol/Internet Protocol is a set of protocols that provides rules for
	communication between networks. It is the worldwide internetworking standard and the basic
	communications protocol of the Internet.
TFTP	Trivial File Transfer Protocol is a very simple protocol used to transfer files.
UPnP	Universal Plug and Play protocol.
UPS	A uninterruptible power supply provides battery back-up for a specified time during a power outage.
upstream	In a cable data or DSL network, the direction of data sent from your computer to the Internet.
USB	Universal Serial Bus
wireless access	A device that provides network connectivity to one or more client computers using radio signals over
point (WAP)	a wireless connection. One example you could use with your voice gateway is the Motorola Wireless
	Access Point WA840G.
VoIP	Voice over Internet Protocol is a method to exchange voice, fax, and other information over the
	Internet. Voice and fax have traditionally been carried over telephone lines using a dedicated circuit
	for each line. VoIP enables calls to travel as discrete data on shared lines.
VoIP provider	The company from which you purchase VoIP telephone service.
VPN	A virtual private network is a private network that uses “virtual” connections (tunnels) routed over a
	public network (usually the Internet) to provide a secure and fast connection, usually to users
	working remotely at home or in small branch offices. A VPN connection provides security and
	performance similar to a dedicated link (for example, a leased line), but at much lower cost.
WAN	A wide-area network provides a connection over a large geographic area, such as a country or the
	whole world. The bandwidth depends on need and cost, but is usually much lower than for a LAN.
	For the voice gateway, “WAN” refers to the VoIP and broadband provider networks.
World Wide Web	An interface to the Internet that you use to navigate and hyperlink to information.

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