Appendix B: Glossary |
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Port Mirroring - Port mirroring, also known as a roving analysis port, |
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is a method of monitoring network traffic that forwards a copy of each |
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incoming and outgoing packet from one port of a network switch to |
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another port where the packet can be studied. A network administrator |
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uses port mirroring as a diagnostic tool or debugging feature, especially |
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when fending off an attack. It enables the administrator to keep close |
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track of switch performance and alter it if necessary. Port mirroring can be |
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managed locally or remotely. |
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Print Server - A hardware device that enables a printer to be located |
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anywhere in the network. |
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Quality of Service (QoS) - Term for the set of parameters and their values |
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which determine the performance of a given virtual circuit. |
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RIP (Routing Information Protocol) - A simple routing protocol that |
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is part of the TCP/IP protocol suite. It determines a route based on the |
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smallest hop count between source and destination. RIP is a distance vector |
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protocol that routinely broadcasts routing information to its neighboring |
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Routers and is known to waste bandwidth. AppleTalk, DECnet, TCP/IP, |
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NetWare, and VINES all use incompatible versions of RIP. | 95 |
Router - An OSI Layer 3 device that can decide which of several paths network traffic will follow based on some optimality metric. Also called a gateway (although this definition of gateway is becoming increasingly outdated), routers forward packets from one network to another based on
Powerline - Powerline (Sometimes called DPL- Digital PowerLine) technology provides the transmission of data over the same lines that carry electric power in homes and businesses.
Server - Any computer whose function in a network is to provide user access to files, printing, communications, and other services.
