Term
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Definition
| OPEN SYSTEMS INTERCONENCTION |
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Term
Network devices classified based on function
–Standards released in 1978, revised in 1983, still used today
–Illustrates:
•How network device prepares data for delivery
•How data is handled once received |
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Definition
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Definition
| picks the route the network is to take and handles the addressing of the packets for delivery |
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| Function of the network layer |
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Definition
| makes logical addressing, routing , fragmentation, and reassembly available |
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Definition
Connect multiple Ethernet devices together:
•To function as a single network segment |
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Definition
| Forward packets across computer networks |
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Definition
| Help evenly distribute work across a network |
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| Stateful packet filtering |
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Definition
Keeps record of state of connection
•Makes decisions based on connection and conditions |
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Definition
| Computer or application that intercepts and processes user requests |
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Definition
Does not serve clients
–Routes incoming requests to correct server |
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Term
| Virtual private network (VPN) |
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Definition
Uses unsecured network as if it were secure
–All data transmitted between remote device and network is encrypted |
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Definition
Used in communicating VPN transmissions
–May be software on local computer
–May be VPN concentrator (hardware device)
–May be integrated into another networking device |
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Definition
| Compares current detected behavior with baseline |
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Term
| Host intrusion detection system (HIDS) |
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Definition
| Software-based application that can detect attack as it occurs |
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Term
| Network address translation (NAT) |
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Definition
| Allows private IP addresses to be used on the public Internet |
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Term
| Port address translation (PAT) |
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Definition
Variation of NAT
•Outgoing packets given same IP address but different TCP port number |
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Definition
| IP address may be split anywhere within its 32 bits |
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Definition
Allow scattered users to be logically grouped together:
–Even if attached to different switches |
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Definition
Working away from the office commonplace today
–Telecommuters
–Traveling sales representatives
–Traveling workers |
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| ___ network security___ provide a degree of security |
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Definition
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| ________ give higher protection level |
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Definition
| Hardware devices specifically designed for security |
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| ____server intercepts and processes user requests |
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Definition
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Term
| ______ uses unsecured public network and encryption to provide security |
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Definition
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Term
| ______ designed to detect attack as it occurs |
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Definition
| Intrusion detection system |
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Term
| _______ can help secure a network |
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Definition
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Term
| Methods for_____ a secure network |
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Definition
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