SMC Networks Barricade BR14VPN - Manual (Page 71)

NAT – (Network Address Translation) This process allows all of the computers on your home
network to use one IP address. The NAT capability of the Barricade, allows you to access the
Internet from any computer on your home network without having to purchase more IP
addresses from your ISP. Network Address Translation can be used to give multiple users
access to the Internet with a single user account, or to map the local address for an IP
server (such as Web or FTP) to a public address. This secures your network from direct
attack by hackers, and provides more flexible management by allowing you to change
internal IP addresses without affecting outside access to your network. NAT must be
enabled to provide multi-user access to the Internet or to use the Virtual Server function.
Packet Binary Convulational Code(tm) (PBCC) - A modulation technique developed by Texas
Instruments Inc. (TI) that offers data rates of up to 22Mbit/s and is fully backward
compatible with existing 802.11b wireless networks.
PAP - This is a simple authentication protocol where the username and password data are
both handled in a cleartext or unencrypted format. We do not recommend using PAP
because your passwords are easily readable from the Point-to-Point Protocol (PPP) packets
exchanged during the authentication process.
PCI - Peripheral Component Interconnect - Local bus for PCs from Intel that provides a high-
speed data path between the CPU and up to 10 peripherals (video, disk, network, etc.). The
PCI bus runs at 33MHz, supports 32-bit and 64-bit data paths, and bus mastering.
PPPoE - Point-to-Point Protocol over Ethernet. Point-to-Point Protocol is a method of
secure data transmission originally created for dial-up connections. PPPoE is for Ethernet
connections.
PPTP - PPTP stands for Point-to-Point Tunneling Protocol. It provides a means for tunneling
IP traffic in Layer 2. For instance, it allows you to establish a connection to a corporate
network and share files or other data as if your machine were actually on that local network.
Roaming - A function that allows your to move through a particular domain without losing
network connectivity.
SNMP - Format used for network management data. Data is passed between SNMP agents
(processes that monitor activity in hubs, switches, etc.) and the workstation used to oversee
the network. SNMP uses Management Information Bases (MIBs), which are databases that
define what information is obtainable from a networked device and what can be controlled
(turned off, on, etc.).
Static IP - If your Service Provider has assigned a fixed IP address; enter the assigned IP
address, subnet mask and the gateway address provided by your service provider.
SPI - Stateful Packet Inspection ensures that the data coming into your network was
requested by an end node computer on your LAN. The Barricade examines the incoming data
and compares it to a database of trusted information. As traffic leaves the network it is
defined by certain characteristics. Incoming information is then compared to these sets of
characteristics. If the incoming data matches the predefined set of characteristics the
incoming traffic is allowed. If no match is found the incoming traffic is discarded.
Subnet Mask - A subnet mask, which may be a part of the TCP/IP information provided by
your ISP, is a set of four numbers configured like an IP address. It is used to create IP
address numbers used only within a particular network (as opposed to valid IP address
numbers recognized by the Internet.
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