NetComm Gateway Series manual Nat

Microfilter	In splitterless deployments, a microfilter is a device that removes the data frequen-
	cies in the DSL signal, so that telephone users do not experience interference
	(noise) from the data signals. Microfilter types include in-line (installs between
	phone and jack) and wall-mount (telephone jack with built-in microfilter). See also
	splitterless.
NAT	Network Address Translation A service performed by many routers that translates
	your network’s publicly known IP address into a Private IP address for each
	computer on your LAN. Only your router and your LAN know these addresses; the
	outside world sees only the public IP address when talking to a computer on your
	LAN.
NAT rule	A defined method for translating between public and private IP addresses on your
	LAN.
network	A group of computers that are connected together, allowing them to communicate
	with each other and share resources, such as software, files, etc.A network can be
	small, such as a LAN, or very large, such as the Internet.
network mask	A network mask is a sequence of bits applied to an IP address to select the
	network ID while ignoring the host ID. Bits set to 1 mean “select this bit” while bits
	set to 0 mean “ignore this bit.” For example, if the network mask 255.255.255.0 is
	applied to the IP address 100.10.50.1, the network ID is 100.10.50, and the host
	ID is 1. See also binary, IP address, subnet
NIC	Network Interface Card An adapter card that plugs into your computer and provides
	the physical interface to your network cabling, which for Ethernet NICs is typically
	an RJ-45 connector. See Ethernet, RJ-45.
Pass-through Line	The line that connects the NB9/NB9W to a POTS line may be referred to as a pass-
	through line
packet	Data transmitted on a network consists of units called packets. Each packet con-
	tains a payload (the data), plus overhead information such as where it came from
	(source address) and where it should go (destination address).
ping	Packet Internet (or Inter-Network) Groper A program used to verify whether the host
	associated with an IP address is online. It can also be used to reveal the IP address
	for a given domain name.
port	A physical access point to a device such as a computer or router, through which
	data flows into and out of the device.
POTS	Plain Old Telephone Service Traditional analog telephone service using copper
	telephone lines. Pronounced pots. See also PSTN.
POTS splitter	See splitter.
PPP	Point-to-Point Protocol A protocol for serial data transmission that is used to
	carry IP (and other protocol) data between your ISP and your computer. The WAN
	interface on the My ADSL Modem uses two forms of PPP called PPPoA and PPPoE.
	See also PPPoA, PPPoE.
PPPoA	Point-to-Point Protocol over ATM One of the two types of PPP interfaces you can
	define for a Virtual Circuit (VC), the other type being PPPoE. You can define only
	one PPPoA interface per VC.
PPPoE	Point-to-Point Protocol over Ethernet One of the two types of PPP interfaces you
	can define for a Virtual Circuit (VC),the other type being PPPoA. You can define one
	or more PPPoE interfaces per VC.
SmartVoice Gateway(s) User Guide	87
YML832 Rev2