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Cisco TrustSec How-To Guide: Segmenting Clients and Servers in
Cisco TrustSec How-To Guide: Segmenting Clients and Servers in

... Virtual server - physical server segmentation using SGFW (Figure 2). For this use case, we will deny all network traffic between the engineering server connected to the Cisco Nexus 7000 distribution switch and the virtual servers hosted behind the Cisco Nexus 7000 end-of-row switch. While SGFW is th ...
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... RPC connects applications over the network with the familiar abstraction of procedure calls • Stubs package parameters/results into a message • UDP with retransmissions is a low-latency transport ...
Reference Manual for the 54 Mbps Wireless Router WGR614 v6 202-10099-01, April 2005
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... which a host needs to find out whether a certain type of service is available or not. Internet protocols such as Bootstrap Protocol (BOOTP) and Open Shortest path First (OSPF) protocol are among these applications. Using multicast messages and sending the query to those hosts which are potentially c ...
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... Imagine you would have to administer the network of a company. It should be used for sending emails and storing business data centrally. The company plans also to provide access to the world wide web and many other patterns of utilisation. Therefore the private network will be connected to the Inter ...
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... Every day more technology is utilizing digital methods of communication. The popular example of this is television, where a handful of channels were sent using analog radio waves directly to an antenna on a house. There was nothing in between. Today television content is created digitally then packa ...
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Deep packet inspection

Deep Packet Inspection (DPI, also called complete packet inspection and Information eXtraction or IX) is a form of computer network packet filtering that examines the data part (and possibly also the header) of a packet as it passes an inspection point, searching for protocol non-compliance, viruses, spam, intrusions, or defined criteria to decide whether the packet may pass or if it needs to be routed to a different destination, or, for the purpose of collecting statistical information. There are multiple headers for IP packets; network equipment only needs to use the first of these (the IP header) for normal operation, but use of the second header (TCP, UDP etc.) is normally considered to be shallow packet inspection (usually called Stateful Packet Inspection) despite this definition.There are multiple ways to acquire packets for deep packet inspection. Using port mirroring (sometimes called Span Port) is a very common way, as well as an optical splitter.Deep Packet Inspection (and filtering) enables advanced network management, user service, and security functions as well as internet data mining, eavesdropping, and internet censorship. Although DPI technology has been used for Internet management for many years, some advocates of net neutrality fear that the technology may be used anticompetitively or to reduce the openness of the Internet.DPI is used in a wide range of applications, at the so-called ""enterprise"" level (corporations and larger institutions), in telecommunications service providers, and in governments.
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