Corinex Global ADSL2+ - Manual (Page 134)

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Appendices
Corinex ADSL2+ Wireless Gateway G
Port Mirroring - Port mirroring, also known as a roving analysis port, is a method
of monitoring network traffic that forwards a copy of each incoming and outgoing
packet from one port of a network switch to another port where the packet can
be studied. A network administrator uses port mirroring as a diagnostic tool or
debugging feature, especially when fending off an attack. It enables the
administrator to keep close track of switch performance and alter it if necessary.
Port mirroring can be managed locally or remotely.
PPPoE (Point to Point Protocol over Ethernet) - A method used mostly by
DSL providers for connecting personal computers to a broadband modem for
Internet access. It is similar to how a dial-up connection works but at higher speeds
and quicker access.
PPTP (Point-to-Point Tunneling Protocol) - A protocol (set of communication
rules) that allows corporations to extend their own corporate network through pri-
vate “tunnels” over the public Internet. Effectively, a corporation uses a wide area
network as a single large local area network. A company no longer needs to lease its
own lines for wide-area communication but can securely use the public networks.
This kind of interconnection is known as a virtual private network (VPN).
Preamble - Part of the wireless signal that synchronizes network traffic.
Print Server - A hardware device that enables a printer to be located anywhere
in the network.
RIP (Routing Information Protocol) - A simple routing protocol that is part of
the TCP/IP protocol suite. It determines a route based on the smallest hop count
between source and destination. RIP is a distance vector protocol that routinely
broadcasts routing information to its neighboring routers and is known to waste
bandwidth. AppleTalk, DECnet, TCP/IP, NetWare, and VINES all use incompatible
versions of RIP.
RJ-11 (Registered Jack-11) - A telephone connector that holds up to six wires.
The RJ-11 is the common connector used to plug a telephone into a wall.
RJ-45 (Registered Jack-45) - An Ethernet connector that holds up to eight
wires.
Router - A networking device that connects multiple networks together, such as a
local network and the Internet.