ppt
... – UDP hole punching uses a public relay (typically a STUN server) – Address information is exchanged – Direct communication is tried – Idea: each UDP send operation opens a hole • Very similar to connection reversal – Does not work with symmetric NATs – Can be used with TCP as well but this case is ...
... – UDP hole punching uses a public relay (typically a STUN server) – Address information is exchanged – Direct communication is tried – Idea: each UDP send operation opens a hole • Very similar to connection reversal – Does not work with symmetric NATs – Can be used with TCP as well but this case is ...
lecture1 - Academic Csuohio
... • I will not accept the lab report if you do now show up during the lab session without prior notice • Lab report must be typed and submitted in hardcopy on or before due date ...
... • I will not accept the lab report if you do now show up during the lab session without prior notice • Lab report must be typed and submitted in hardcopy on or before due date ...
Overview - ece.virginia.edu
... agent’s routing table, hence the need for authentication. • Each mobile node must share a security association and be able to use Message Digest 5 (MD5 - RFC 1321) with 128-bit keys to create unforgeable digitally signatures for registration request. • Each registration request must contain unique d ...
... agent’s routing table, hence the need for authentication. • Each mobile node must share a security association and be able to use Message Digest 5 (MD5 - RFC 1321) with 128-bit keys to create unforgeable digitally signatures for registration request. • Each registration request must contain unique d ...
Quality of Service (QoS)-Based Management of Preempted Traffic in
... Conclusion and future work Allocating a dedicated bandwidth for traffic allows it to have stable behavior in terms of the throughput. Better performance (jitter, delay) is achieved when serving the preempted traffic at lower QoS level. Better network management can be achieved since the consu ...
... Conclusion and future work Allocating a dedicated bandwidth for traffic allows it to have stable behavior in terms of the throughput. Better performance (jitter, delay) is achieved when serving the preempted traffic at lower QoS level. Better network management can be achieved since the consu ...
![Internet Security [1] - Distributed Systems Group](http://s1.studyres.com/store/data/008042804_1-fef73260079c1aa16dceefbf38249e12-300x300.png)
IOSR Journal of Computer Engineering (IOSR-JCE)
... In wired networks the infrastructure of the network is fixed hence the routes are being selected according to some predetermined tables within some fixed routing devices such as routers ,3-layer switches etc. But in case of wireless Ad-hoc networks, the nodes themselves comprises the network ,and th ...
... In wired networks the infrastructure of the network is fixed hence the routes are being selected according to some predetermined tables within some fixed routing devices such as routers ,3-layer switches etc. But in case of wireless Ad-hoc networks, the nodes themselves comprises the network ,and th ...
Technology Infrastructure: The Internet and the World Wide Web
... – Amount of data that can travel through a communication line per unit of time ...
... – Amount of data that can travel through a communication line per unit of time ...
Presentation ( format)
... – station ready to send starts sensing the medium (Carrier Sense based on CCA, Clear Channel Assessment) – if the medium is free for the duration of an Inter-Frame Space (DIFS), the station can start sending after CWmin – if the medium is busy, the station has to wait for a free DIFS, then the stati ...
... – station ready to send starts sensing the medium (Carrier Sense based on CCA, Clear Channel Assessment) – if the medium is free for the duration of an Inter-Frame Space (DIFS), the station can start sending after CWmin – if the medium is busy, the station has to wait for a free DIFS, then the stati ...
Sample
... layer 1 (physical): transmission of bits layer 2 (data link): transmission of frames on one given link layer 3 (network): routing of packets through the network layer 4 (transport): end-to-end delivery of messages layer 5 (session): end-to-end conversation, synchronization layer 6 (prese ...
... layer 1 (physical): transmission of bits layer 2 (data link): transmission of frames on one given link layer 3 (network): routing of packets through the network layer 4 (transport): end-to-end delivery of messages layer 5 (session): end-to-end conversation, synchronization layer 6 (prese ...
A Survey on Void Handling Techniques for Geographic
... on the right hand rule, can be used to forward packets to the destination. Base on the right hand rule it can be traverse an obstacle such as a wall in a maze by keeping one’s right hand against the wall while walking forward [11]. In wireless networks, around each node, there is a circular area wit ...
... on the right hand rule, can be used to forward packets to the destination. Base on the right hand rule it can be traverse an obstacle such as a wall in a maze by keeping one’s right hand against the wall while walking forward [11]. In wireless networks, around each node, there is a circular area wit ...
Using Management Information Systems
... ◦ All Internet traffic aimed at any computer within an organization's LAN will be sent over the Internet using the router’s IP public address for the given computer. ...
... ◦ All Internet traffic aimed at any computer within an organization's LAN will be sent over the Internet using the router’s IP public address for the given computer. ...
a vivacious approach to detect and prevent ddos attack
... capability than volume based methods. ii) It provides additional information to classify among different types anomaly (worms, DoS attack. Port scanning) .We considers two classes of distribution i) flow header features (IP address, ports, and flow sizes) ii) behavioral features (the number of disti ...
... capability than volume based methods. ii) It provides additional information to classify among different types anomaly (worms, DoS attack. Port scanning) .We considers two classes of distribution i) flow header features (IP address, ports, and flow sizes) ii) behavioral features (the number of disti ...
TCP in wireless environments: problems and solutions
... the presence of high link error rate. In the rapid recovery phase, instead of trying to distinguish congestive loss from error loss, the sender uses the lower-priority dummy packets to interleave the data packets and inflates the sending window size upon receptions of ACKs for the dummy packets. Ad ...
... the presence of high link error rate. In the rapid recovery phase, instead of trying to distinguish congestive loss from error loss, the sender uses the lower-priority dummy packets to interleave the data packets and inflates the sending window size upon receptions of ACKs for the dummy packets. Ad ...
Synchronization of VM probes for observing P2P traffic and
... (virtualized domains) in physical machine on different locations to provide illusion that these are running on the same segment, local area network. Therefore, using Ether IP makes it possible to synchronize nodes for tracing, observing networks and sending command. It is shown that connection graphs ...
... (virtualized domains) in physical machine on different locations to provide illusion that these are running on the same segment, local area network. Therefore, using Ether IP makes it possible to synchronize nodes for tracing, observing networks and sending command. It is shown that connection graphs ...
6LoWPAN adaptation layer (cont.)
... Dynamic MANET On-demand for 6LoWPAN Routing Like AODV, DYMO performs route discovery and maintenance by using RREQ, RREP and RERR messages. Unlike AODV, the DYMO protocol does not use local repair although it uses Hello message to keep track of the link connectivity. However, DYMO cannot be ...
... Dynamic MANET On-demand for 6LoWPAN Routing Like AODV, DYMO performs route discovery and maintenance by using RREQ, RREP and RERR messages. Unlike AODV, the DYMO protocol does not use local repair although it uses Hello message to keep track of the link connectivity. However, DYMO cannot be ...
Chapter 1
... • The Internet is a good example of a connectionless, packet switched network. Each packet contains all of the addressing information required for successful packet delivery. • Frame Relay is an example of a connection-oriented packet switched network. Each packet does not require addressing informa ...
... • The Internet is a good example of a connectionless, packet switched network. Each packet contains all of the addressing information required for successful packet delivery. • Frame Relay is an example of a connection-oriented packet switched network. Each packet does not require addressing informa ...
Cisco IOS Firewall
... Stateful firewalls have two main improvements over packet filters: They maintain a session table (state table) where they track all connections. They recognize dynamic applications and know which additional connections will be initiated between the endpoints. ...
... Stateful firewalls have two main improvements over packet filters: They maintain a session table (state table) where they track all connections. They recognize dynamic applications and know which additional connections will be initiated between the endpoints. ...
frame-relay map
... Backward explicit congestion notification (BECN) -- A bit set in a frame that notifies a DTE that congestion avoidance procedures should be initiated by the receiving device. As shown in Figure when a Frame Relay switch recognizes congestion in the network, it sends a BECN packet to the source route ...
... Backward explicit congestion notification (BECN) -- A bit set in a frame that notifies a DTE that congestion avoidance procedures should be initiated by the receiving device. As shown in Figure when a Frame Relay switch recognizes congestion in the network, it sends a BECN packet to the source route ...
The Network Layer - London South Bank University
... a) Unicast = one source and one destination. (1-to-1 relationship). b) In Unicast routing, when a router receives a packet, it forwards the packet thru only one of its ports as defined in the routing table. The router may discard the packet if it cannot find the destination address c) Questions: In ...
... a) Unicast = one source and one destination. (1-to-1 relationship). b) In Unicast routing, when a router receives a packet, it forwards the packet thru only one of its ports as defined in the routing table. The router may discard the packet if it cannot find the destination address c) Questions: In ...
SNMP and Beyond - Washington University in St. Louis
... network tools that do not generate any traffic themselves while collecting data. Instead, the analyzer merely listens to traffic that is on the network. This fundamentally limits the breadth of analysis generated by passive tools because they can only see traffic that is local to the device running ...
... network tools that do not generate any traffic themselves while collecting data. Instead, the analyzer merely listens to traffic that is on the network. This fundamentally limits the breadth of analysis generated by passive tools because they can only see traffic that is local to the device running ...
Chapter 4 slides
... K be as given below, and let their respective measured distance to node J be 6, 9, 13 and 5. What will the routing table at node J look like after the next information exchange? Put the answer in the box below. ...
... K be as given below, and let their respective measured distance to node J be 6, 9, 13 and 5. What will the routing table at node J look like after the next information exchange? Put the answer in the box below. ...
Wake-on-LAN
Wake-on-LAN (WoL) is an Ethernet or Token ring computer networking standard that allows a computer to be turned on or awakened by a network message.The message is usually sent by a program executed on another computer on the same local area network. It is also possible to initiate the message from another network by using subnet directed broadcasts or a WOL gateway service. Equivalent terms include wake on WAN, remote wake-up, power on by LAN, power up by LAN, resume by LAN, resume on LAN and wake up on LAN. In case the computer being awakened is communicating via Wi-Fi, a supplementary standard called Wake on Wireless LAN (WoWLAN) must be employed.The WOL and WoWLAN standards are often supplemented by vendors to provide protocol-transparent on-demand services, for example in the Apple Bonjour wake-on-demand (Sleep Proxy) feature.