Term
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Definition
| 802.1X component that requests authentication credentials from supplicants. |
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Term
| Authorization Server (AS) |
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Definition
| 802.1X component that verifies the supplicant’s authentication credentials. |
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Term
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Definition
| Binary sequences of 0s and 1s used to encode traffic onto physical network media. |
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Term
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Definition
| Routing table entry that indicates the route that will be used if no other defined routes match a particular destination. |
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Term
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Definition
| Creates a physical connection to a remote network by using a dial-up device such, as a POTS modem or a demand-dial ISDN modem. |
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Term
| directly attached network routes |
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Definition
| Routes to destination networks for which the router in question is directly attached. |
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Term
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Definition
| 802.1X packet sent from a supplicant to an authenticator, instructing the supplicant to place the port back in an unauthenticated state. |
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Term
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Definition
| Data at Layer 2 of the OSI model (the Data Link Layer) is organized into frames for processing by higher levels of the OSI model. |
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Term
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Definition
| Routing table entry that defines a route to a particular destination host rather than a destination network. |
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Term
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Definition
| Network device that operates at the Physical Layer (Layer 1) of the OSI model. |
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Term
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Definition
| Layer 3 network device that transmits data between local and remote networks. |
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Term
| limited broadcast address |
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Definition
| Reserved IP address (255.255.255.255) used as the broadcast address for all networks and routers. |
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Term
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Definition
| Reserved IP address (127.0.0.1) used for troubleshooting and testing. |
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Term
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Definition
| Column in a routing table that indicates the cost of using one route instead of another. |
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Term
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Definition
| Standard for allowing or disallowing network access based on administrator-specified criteria. |
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Term
| Network Policy Server (NPS) |
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Definition
| Windows Server 2008 implementation of RADIUS. |
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Term
| Open Shortest Path First (OSPF) |
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Definition
| Routing protocol in which individual routers maintain a database of all reachable networks that it is aware of and share this database with neighboring routers. |
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Term
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Definition
| Data at Layer 3 of the OSI model (the Network Layer) is organized into packets for transmission to local or remote networks. |
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Term
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Definition
| Layer 1 of the OSI model, where bits of data interface with the physical network media. |
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Term
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Definition
| Routes to destination networks that the router in question is not directly attached to. |
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Term
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Definition
| Layer 3 network device that transmits data between local and remote networks. |
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Term
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Definition
| Used in lieu of static routes in more complex network environments to simplify the administration of network routing. |
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Term
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Definition
| Callback option that allows the user to specify the callback number at the time the connection is made. |
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Term
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Definition
| Router running on a computer running an operating system, such as Windows Server 2008, that can also be used for other functions. |
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Term
| Strongest Encryption (MPPE 128-bit) |
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Definition
| 128-bit encryption used for VPN connections. |
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Term
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Definition
| 802.1X device that is seeking access to the network, such as a laptop attempting to access a wireless access point |
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Term
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Definition
| Layer 2 network device that examines the source and destination MAC address of the network data to determine where the data should be sent. |
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Term
| Virtual Private Network (VPN) |
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Definition
| Creates a secured logical connection to a remote network over a non-secure network, such as the Internet. |
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