About the Presentations
... • Common rules for packet filtering: – Drop all inbound connections except connection requests for configured servers – Eliminate packets bound for all ports that should not be available to the Internet – Filter out any ICMP redirect or echo (ping) messages – Drop all packets that use the IP header ...
... • Common rules for packet filtering: – Drop all inbound connections except connection requests for configured servers – Eliminate packets bound for all ports that should not be available to the Internet – Filter out any ICMP redirect or echo (ping) messages – Drop all packets that use the IP header ...
(GPRS) Miao Lu (2705914) Nancy Samaan
... packet-switched networks. Converts the GPRS packets from SGSN into the appropriate packet data protocol format (e.g., IP or X.25) and sends out on the corresponding packet data network. Participates into the mobility management. Maintains the location information of the mobile stations that ar ...
... packet-switched networks. Converts the GPRS packets from SGSN into the appropriate packet data protocol format (e.g., IP or X.25) and sends out on the corresponding packet data network. Participates into the mobility management. Maintains the location information of the mobile stations that ar ...
Slide 1
... 5 Network Devices Each connection point on a network is referred to as a node To connect to a LAN, a computer requires network circuitry, sometimes referred to as a network interface card (NIC) A networked peripheral, or network-enabled peripheral, is any device that contains network circuitr ...
... 5 Network Devices Each connection point on a network is referred to as a node To connect to a LAN, a computer requires network circuitry, sometimes referred to as a network interface card (NIC) A networked peripheral, or network-enabled peripheral, is any device that contains network circuitr ...
Document
... Connection oriented traffic allows for traffic engineering and bandwidth guarantees (QoS) - and is already provided today in technologies like ATM and Frame Relay. IP alone is a connectionless protocol. Its forwarding decision are made on a hop by hop basis. ...
... Connection oriented traffic allows for traffic engineering and bandwidth guarantees (QoS) - and is already provided today in technologies like ATM and Frame Relay. IP alone is a connectionless protocol. Its forwarding decision are made on a hop by hop basis. ...
“Network” Components
... Each of the interfaces will be assigned a network address. Although in reality ethernet frames use a 12 digit MAC address and UDP/IP or TCP/IP packets use an IP address as well, a simple integer will suffice for the simulation in most cases. The role of the address is to enable the Network switches ...
... Each of the interfaces will be assigned a network address. Although in reality ethernet frames use a 12 digit MAC address and UDP/IP or TCP/IP packets use an IP address as well, a simple integer will suffice for the simulation in most cases. The role of the address is to enable the Network switches ...
Lesson 8
... Traffic analysis – a form of passive attack in which an intruder observes information about calls and makes inferences from things such as the source and destination numbers, or the length or frequency of the calls. ...
... Traffic analysis – a form of passive attack in which an intruder observes information about calls and makes inferences from things such as the source and destination numbers, or the length or frequency of the calls. ...
Packet-Hiding Methods for Preventing Selective Jamming Attacks
... only the first few bytes of m. J then corrupts m beyond recovery by interfering with its reception at B. We address the problem of preventing the jamming node from classifying m in real time, thus mitigating J’s ability to perform selective jamming. Our goal is to transform a selective jammer to a r ...
... only the first few bytes of m. J then corrupts m beyond recovery by interfering with its reception at B. We address the problem of preventing the jamming node from classifying m in real time, thus mitigating J’s ability to perform selective jamming. Our goal is to transform a selective jammer to a r ...
Reorder Density (RD): A Formal, Comprehensive Metric for Packet Reordering
... possibly to increased congestion [4]. Approaches for mitigating the impact of out-oforder packet delivery on TCP performance include adjusting ‘dupthresh’ parameter, i.e., the number of duplicate ACKs to be allowed before classifying a following nonacknowledged packet as lost [19]. In delay sensitiv ...
... possibly to increased congestion [4]. Approaches for mitigating the impact of out-oforder packet delivery on TCP performance include adjusting ‘dupthresh’ parameter, i.e., the number of duplicate ACKs to be allowed before classifying a following nonacknowledged packet as lost [19]. In delay sensitiv ...
Symbol-level Network Coding for Wireless Mesh Networks
... of wireless mesh networks. MIXIT exploits a basic property of mesh networks: even when no node receives a packet correctly, any given bit is likely to be received by some node correctly. Instead of insisting on forwarding only correct packets, MIXIT routers use physical layer hints to make their bes ...
... of wireless mesh networks. MIXIT exploits a basic property of mesh networks: even when no node receives a packet correctly, any given bit is likely to be received by some node correctly. Instead of insisting on forwarding only correct packets, MIXIT routers use physical layer hints to make their bes ...
PowerPoint
... • Per Hop Behaviour (PHB): the externally observable forwarding behaviour applied to a DS-compliant node to packets with same label (DS codepoint) • PHB Group: set of PHBs which can only meaningfully specified and implemented simultaneously (e.g. with common constraints on queue servicing and queue ...
... • Per Hop Behaviour (PHB): the externally observable forwarding behaviour applied to a DS-compliant node to packets with same label (DS codepoint) • PHB Group: set of PHBs which can only meaningfully specified and implemented simultaneously (e.g. with common constraints on queue servicing and queue ...
Multi-Protocol Label Switching (MPLS)
... krit tamrakar (B.S.E.) Rashmi shrivastava(B.S.E.) prakriti ...
... krit tamrakar (B.S.E.) Rashmi shrivastava(B.S.E.) prakriti ...
L347176
... MPLS VPN - Service providers can create IP tunnels all over their networks using MPLS, which does not necessitate encryption or end-user applications Layer 2 services (ATM, Ethernet, frame relay) can carried over the MPLS core Simplified network management through elimination of multiple layers MPLS ...
... MPLS VPN - Service providers can create IP tunnels all over their networks using MPLS, which does not necessitate encryption or end-user applications Layer 2 services (ATM, Ethernet, frame relay) can carried over the MPLS core Simplified network management through elimination of multiple layers MPLS ...
Networking Basics - Undergraduate Research in Consumer
... • There is no round trip delay waiting for connection setup; a host can send data as soon as it is ready. • Source host has no way of knowing if the network is capable of delivering a packet or if the destination host is ...
... • There is no round trip delay waiting for connection setup; a host can send data as soon as it is ready. • Source host has no way of knowing if the network is capable of delivering a packet or if the destination host is ...
Introduction
... A bridge is a Layer 2 device designed to create two or more LAN segments, each of which is a separate collision domain. That is, they were designed to create more useable bandwidth. The purpose of a bridge is to filter traffic on a LAN—to keep local traffic local—yet allow connectivity to other part ...
... A bridge is a Layer 2 device designed to create two or more LAN segments, each of which is a separate collision domain. That is, they were designed to create more useable bandwidth. The purpose of a bridge is to filter traffic on a LAN—to keep local traffic local—yet allow connectivity to other part ...
Analysis of Reliable Multicast Protocols
... Motivation • Traditional Routing and packet switching – A simple-software-based router platform – L2 switching (Hardware) for local network ...
... Motivation • Traditional Routing and packet switching – A simple-software-based router platform – L2 switching (Hardware) for local network ...
Metro WDM Networks: Performance Comparison of , Senior Member, IEEE
... slicing of a broadband light source in conjunction with spectrum spreading of the control signals [21], or as an out-of-band control channel, e.g., by running a PSC in parallel to the AWG [8]. In our explanation of the basic principles of the MAC protocol in the AWG star, we focus on the out-of-band ...
... slicing of a broadband light source in conjunction with spectrum spreading of the control signals [21], or as an out-of-band control channel, e.g., by running a PSC in parallel to the AWG [8]. In our explanation of the basic principles of the MAC protocol in the AWG star, we focus on the out-of-band ...
cs2302 computer networks
... It ensures that the whole message arrives in order and intact. It ensures the error control and flow control at source to destination level. The responsibilities are, 1. Service point Addressing A single computer can often run several programs at the same time. The transport layer gets the e ...
... It ensures that the whole message arrives in order and intact. It ensures the error control and flow control at source to destination level. The responsibilities are, 1. Service point Addressing A single computer can often run several programs at the same time. The transport layer gets the e ...
A hybrid MAC protocol for a metro WDM network arrayed-waveguide grating
... However, data and control information have to be distinguishable at the receiver. This can be achieved by means of direct sequence spread spectrum techniques. The control information is spreaded before externally modulating the LED [33]. Accordingly, at the receiving part the control information is ...
... However, data and control information have to be distinguishable at the receiver. This can be achieved by means of direct sequence spread spectrum techniques. The control information is spreaded before externally modulating the LED [33]. Accordingly, at the receiving part the control information is ...
COMP680E by M. Hamdi
... Integrated Services (cont’d) • At each hop admission control checks whether sufficient resources are available to accept the new reservation. • Resource reservation enforced by packet classification and scheduling mechanisms. • Two service models are introduced: guaranteed service and controlled lo ...
... Integrated Services (cont’d) • At each hop admission control checks whether sufficient resources are available to accept the new reservation. • Resource reservation enforced by packet classification and scheduling mechanisms. • Two service models are introduced: guaranteed service and controlled lo ...
Optical Burst Switching - International Journal of Advanced
... These algorithms focus on minimal burst losses ...
... These algorithms focus on minimal burst losses ...
Hands-on Networking Fundamentals
... – Enter password (master key when installing access point) – After password entered, WPA automatically activated – All wireless devices must use the same password Hands-on Networking Fundamentals ...
... – Enter password (master key when installing access point) – After password entered, WPA automatically activated – All wireless devices must use the same password Hands-on Networking Fundamentals ...
load balancing
... • Switching long-duration flows at lower layers ,routers are offloaded & electro-optical bottleneck is alleviated ...
... • Switching long-duration flows at lower layers ,routers are offloaded & electro-optical bottleneck is alleviated ...
Internet & Web Protocols - University of Liverpool
... IP provides the method of distributing data in packets, can distribute packets to a destination via different routes, and can handle congestion in this manner. TCP provides for virtual circuits, error detection and correction, automatic repeat requests, and other reliable end-to-end communications, ...
... IP provides the method of distributing data in packets, can distribute packets to a destination via different routes, and can handle congestion in this manner. TCP provides for virtual circuits, error detection and correction, automatic repeat requests, and other reliable end-to-end communications, ...
Packet switching
Packet switching is a digital networking communications method that groups all transmitted data into suitably sized blocks, called packets, which are transmitted via a medium that may be shared by multiple simultaneous communication sessions. Packet switching increases network efficiency, robustness and enables technological convergence of many applications operating on the same network.Packets are composed of a header and payload. Information in the header is used by networking hardware to direct the packet to its destination where the payload is extracted and used by application software.Starting in the late 1950s, American computer scientist Paul Baran developed the concept Distributed Adaptive Message Block Switching with the goal to provide a fault-tolerant, efficient routing method for telecommunication messages as part of a research program at the RAND Corporation, funded by the US Department of Defense. This concept contrasted and contradicted the heretofore established principles of pre-allocation of network bandwidth, largely fortified by the development of telecommunications in the Bell System. The new concept found little resonance among network implementers until the independent work of Donald Davies at the National Physical Laboratory (United Kingdom) (NPL) in the late 1960s. Davies is credited with coining the modern name packet switching and inspiring numerous packet switching networks in Europe in the decade following, including the incorporation of the concept in the early ARPANET in the United States.