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IPSec
IPSec

... – Must be enabled with the command “netsh ipsec dynamic set config ike logging 1” ...
Computer networks CEN-330
Computer networks CEN-330

... Office hours :8:00-9:00,11:00-12:00,1:00-2:00 SUN.-TUS.-THU ...
Common WAN Components and Issues
Common WAN Components and Issues

... Split horizon is another potential issue. Split horizon is a technique used in routing to help prevent routing loops. With split horizon, a router will not advertise a route to another network out of the interface that it learned the route on. With a point-to-multipoint WAN connection, a router may ...
Phillipe Lemonnier`s presentation
Phillipe Lemonnier`s presentation

... (OSI level 2) don’t lose bits : they ...
The Blaster Worm: Then and Now
The Blaster Worm: Then and Now

... in August 2004 and discovered more than 200,000 unique IP addresses scanning our dark address monitor, with peaks of 4,100 unique addresses per day and 500 per hour. Although the effects of the Dynamic Host Configuration Protocol (DHCP) can lead to overcounting,10 other effects, such as the Blaster ...
Detecting Good Neighbor Nodes and Finding
Detecting Good Neighbor Nodes and Finding

... Typically, routing protocols are classified according to the route discovery philosophy, into either reactive or proactive. Reactive protocols are on-demand. Route-discovery mechanisms are initiated only when a packet is available for transmission, and no route is available. On the other hand, proac ...
TCP w/o Congestion Control
TCP w/o Congestion Control

... [Jaco90] Van Jacobson, “Modified TCP Congestion Avoidance Algorithm”, email to [email protected], April 1990 [BraMalPet94] Lawrence S. Brakmo, Sean W. O'Malley, Larry L. Peterson, „TCP Vegas: New Techniques for Congestion Detection and Avoidance“, Sigcomm 1994 [MatMahFlRo96] M. Mathis, J. Mahd ...
Link Layer
Link Layer

...  point-to-point  PPP for dial-up access  point-to-point link between Ethernet switch and host  broadcast (shared wire or medium)  Old-fashioned Ethernet  upstream HFC  802.11 wireless LAN ...
Document
Document

... Metricom – Ricochet Network DSL.Net – DSL / VoIP Aerie – nationwide IP access Broadstorm – OFDM FWB CBeyond – VoIP for SME ...
Before You Begin: Assign Information Classification
Before You Begin: Assign Information Classification

... their access and their needs ...
APPLICATION-LAYER MULTICASTING
APPLICATION-LAYER MULTICASTING

... Design of the routing mechanism typically involves a (heuristic) solution to a graph theory problem. The most important is the routing mechanisms. Some Common approaches to the routing mechanism are ...
Link Layer
Link Layer

...  point-to-point  PPP for dial-up access  point-to-point link between Ethernet switch and host  broadcast (shared wire or medium)  Old-fashioned Ethernet  upstream HFC  802.11 wireless LAN ...
LSST Network Operations and Management Plan
LSST Network Operations and Management Plan

... Specifically, this document aims to describe the roles of each of the Institutions supporting the transport and security of LSST data to its archive facilities at NCSA and LSST in Tucson. The goal of this approach is to have a centralized internally staffed LSST Network Architecture Team (NAT), supp ...
Link Layer
Link Layer

...  PPP for dial-up access  point-to-point link between Ethernet switch and host  broadcast (shared wire or medium)  traditional Ethernet  upstream HFC  802.11 wireless LAN ...
15. Interior Routing Protocols
15. Interior Routing Protocols

... Counting to infinity problem caused by misunderstanding between B and A, and B and C – Each thinks it can reach network 5 via the other ...
3rd Edition: Chapter 3
3rd Edition: Chapter 3

... Internet transport protocol  “best effort” service, UDP segments may be:  lost  delivered out of order to app  connectionless:  no handshaking between UDP sender, receiver  each UDP segment handled independently of others ...
Single Packet IP Traceback in AS-level Partial Deployment Scenario
Single Packet IP Traceback in AS-level Partial Deployment Scenario

... to deal with certain denial-of-service (DoS) attacks, where the source IP address is spoofed by attackers. Identifying the sources of attack packets is the first step in making attackers accountable. In addition, figuring out the network path which the attack traffic follows can improve the efficacy ...
Link Layer
Link Layer

... Ethernet Frame Structure Sending adapter encapsulates IP datagram (or other network layer protocol packet) in Ethernet frame ...
"Anonymous Gossip: Improving Multicast Reliability in Mobile Ad-Hoc Networks"
"Anonymous Gossip: Improving Multicast Reliability in Mobile Ad-Hoc Networks"

... a very high probability and with distant nodes occasionally. Our AG protocol is augmented to achieve this optimization. Here, we assume some familiarity with MAODV, because the constraint of brevity prevents us from explaining MAODV in detail, and yet our algorithm builds upon it. We require each no ...
18. Principles of Network Routing
18. Principles of Network Routing

... • distributed (best applicable for moderate communication load)  adjacent nodes status information (sometimes wider)  local decision making according common rules ...
Switching Concepts and LAN Design
Switching Concepts and LAN Design

... Latency has at least three sources: – First, there is the time it takes the source NIC to place voltage pulses on the wire and the time it takes the receiving NIC to interpret these pulses. This is sometimes called NIC delay. – Second, there is the actual propagation delay as the signal takes time t ...
A Scalable Fault-Tolerant Layer 2 Data Center Network Fabric
A Scalable Fault-Tolerant Layer 2 Data Center Network Fabric

... leading to the emergence of “mega data centers” hosting applications running on tens of thousands of servers [3]. For instance, a web search request may access an inverted index spread across 1,000+ servers, and data storage and analysis applications may interactively process petabytes of informatio ...
Middleware
Middleware

... • Layer of software between OS and application – Hides heterogeneity – Provides generic common services – Increases level of abstraction ...
Network-Layer Protocol Operations
Network-Layer Protocol Operations

... partial and incremental updates no support for areas ...
Layer 3 - Ohio Supercomputer Center
Layer 3 - Ohio Supercomputer Center

... universities, K-12 schools, and communities together Funded by the Ohio Board of Regents and operated by OARnet/Ohio Supercomputer Center ...
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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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