| NAT | Network Address Translation. Contemporary NAT features also incorporate PAT, or Port Address Translation, as well. There are specialized forms of NAT, such as DNAT, where the destination address is altered, and SNAT, where a source address is altered. NAT has the most expressive power in systems that provide connection tracking, so packets relating to a single bidirectional communication are treated consistently.
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| NetFlow |
A traffic reporting protocol used by a large number of networking devices to send flow aggregated traffic data to centralized collectors that process, store, and analyze the data. Several versions of the NetFlow protocol exist. Version 5 is perhaps the most commonly used. Similar protocols like sFlow used in other products are often usable with minor additional work at the collector.
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| NSP | Network Service Providers provide interconnections between a customer network and any public or private network not owned by the customer. Examples include the Internet (see ISP), Frame Relay providers, even companies offering point-to-point data services over T-1 or other physical media. NSPs are used by companies to provide internetwork connectivity between their offices and business partners.
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