Digicom Michelangelo LAN Manual page 39

Software Manual
NAT
NAT, Network Address Translation, is designed for IP address simplification and conservation,
as it enables private IP internetworks that use non-registered IP addresses to connect to the
Internet. NAT operates on a router, usually connecting two networks together, and translates
the private (not globally unique) addresses in the internal network into legal addresses before
packets are forwarded onto another network. NAT has the dual functionality of security and
address conservation, and is typically implemented in remote access environments.
NAT Inbound
This command enables the user to list or to set up a series of rules for incoming traffic when
NAT is enabled. By default all incoming packets, other that packets arriving in response
to outgoing traffic, will be rejected.
Network
Any time you connect 2 or more computers together so that they can share resources, you
have a computer network.
Packet
Generic term for a bundle of data, organized in a specific way for transmission over a
network. "Packet" and "datagram" are similar in meaning. A protocol similar to TCP, the
User Datagram Protocol (UDP) uses the term datagram.
PAP
PAP, Password Authentication Protocol, is one of the two PPP authentication protocols, with
CHAP the other one. An authentication protocol requests information to verify a valid user.
PAP requests the user's name and password for verification.
Password
A string of characters assigned to you to gain access to a locked system.
PPP
PPP stands for Point to Point Protocol. It normally means: regular phone line, ISDN, xDSL
connections that require their respective point to point modems.
The protocol used to carry TCP/IP traffic to the ISP across modem and ISDN links. PPP
incorporates authentication (username/password checking).
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