Document
... Transfers data packets between computers in a specific network. In a WAN or an internetwork this involves the generation of a route passing through routers. In a single LAN, no routing is required. Responsible for transmission of packets between nodes that are directly connected by a physical link. ...
... Transfers data packets between computers in a specific network. In a WAN or an internetwork this involves the generation of a route passing through routers. In a single LAN, no routing is required. Responsible for transmission of packets between nodes that are directly connected by a physical link. ...
Network Security Network Attacks and Mitigation
... – Injecting malicious data or commands into an existing data stream – Diverting all network packets to the hacker who can then reply as a trusted user by changing the routing tables • IP spoofing may only be one step in a larger attack. ...
... – Injecting malicious data or commands into an existing data stream – Diverting all network packets to the hacker who can then reply as a trusted user by changing the routing tables • IP spoofing may only be one step in a larger attack. ...
Network Virtualization
... Encapsulate a wide variety of network layer protocol Stateless property • This means end-point doesn't keep information about the state ...
... Encapsulate a wide variety of network layer protocol Stateless property • This means end-point doesn't keep information about the state ...
VRVS - Desy
... Voice switched: default mode for H.323 clients. one video stream at a time Timer switched: browse through all the video based on preset timer. One video stream at a time. Selected Streams: Click among the video participants to view selected video streams (one or several streams available). All S ...
... Voice switched: default mode for H.323 clients. one video stream at a time Timer switched: browse through all the video based on preset timer. One video stream at a time. Selected Streams: Click among the video participants to view selected video streams (one or several streams available). All S ...
Chapter 2 Protocols and Architecture
... Research Project Agency (DARPA) for its packet switched network (ARPANET) • Used by the global Internet • No official model but a working one. —Application layer —Host to host or transport layer —Internet layer —Network access layer —Physical layer ...
... Research Project Agency (DARPA) for its packet switched network (ARPANET) • Used by the global Internet • No official model but a working one. —Application layer —Host to host or transport layer —Internet layer —Network access layer —Physical layer ...
Figure 2.1 Communication requires a message, a transmitter, a
... Protocol: a set of rules for transmitting a message. ...
... Protocol: a set of rules for transmitting a message. ...
Network Monitoring
... Elements related to response time Inbound terminal delay : the delay in getting an inquiry from terminal to the communications line Inbound queuing time : the time required for processing by the controller or PAD device Inbound service time : the time to transmit the communications link and nodes ...
... Elements related to response time Inbound terminal delay : the delay in getting an inquiry from terminal to the communications line Inbound queuing time : the time required for processing by the controller or PAD device Inbound service time : the time to transmit the communications link and nodes ...
Yee-Ting Li
... • QoS Brokers (aka Managed bandwidth Services) – Universal language for intercommunication..? ...
... • QoS Brokers (aka Managed bandwidth Services) – Universal language for intercommunication..? ...
Circuit Extension over IP: An Evolutionary Approach to
... more efficient than ATM because its payload size and therefore percentage of overhead can be set on a per-application basis. This is possible because the number of octets per frame is configurable. With ATM, payload is always 48 bytes, and therefore the percentage of overhead is much higher. Gigabit ...
... more efficient than ATM because its payload size and therefore percentage of overhead can be set on a per-application basis. This is possible because the number of octets per frame is configurable. With ATM, payload is always 48 bytes, and therefore the percentage of overhead is much higher. Gigabit ...
- LearnGroup
... internet facility is flexible IP provides a connectionless service between end systems. ...
... internet facility is flexible IP provides a connectionless service between end systems. ...
Web Filter
... the 1,000s of proxy/re-routing servers that the circumvention tool attempts to connect to in real-time. Correlates and filters the IPs from all virtual machines, comparing to legitimate websites hosted on shared servers via the 100% human-reviewed iGuard analysts, and continuously purge old entries ...
... the 1,000s of proxy/re-routing servers that the circumvention tool attempts to connect to in real-time. Correlates and filters the IPs from all virtual machines, comparing to legitimate websites hosted on shared servers via the 100% human-reviewed iGuard analysts, and continuously purge old entries ...
PPT - Computer Sciences User Pages
... Ethernet: 3com, etc. Hardware/link Routers: cisco, juniper etc. Network App: Email, AIM, IE etc. Application ...
... Ethernet: 3com, etc. Hardware/link Routers: cisco, juniper etc. Network App: Email, AIM, IE etc. Application ...
Part I: Introduction
... 1. Require all telnet users to telnet through gateway. 2. For authorized users, gateway sets up telnet connection to dest host. Gateway relays data between 2 connections 3. Router filter blocks all telnet connections not originating from gateway. 8: Network Management ...
... 1. Require all telnet users to telnet through gateway. 2. For authorized users, gateway sets up telnet connection to dest host. Gateway relays data between 2 connections 3. Router filter blocks all telnet connections not originating from gateway. 8: Network Management ...
Name: Leo Mendoza WAN (used to be slow, noisy)
... codes, data services. DID – direct inward dial trunk. 1 way, CO sends dialed number after call connect. DOD – direct outward dial trunk, 1 way outgoing trunk. PBX repeats dialed number to C.O. Centrex – commercial PBX. DSL – problems: loop qualification, distance, crosstalk. ADSL (1.5Mbps – 7Mbps Do ...
... codes, data services. DID – direct inward dial trunk. 1 way, CO sends dialed number after call connect. DOD – direct outward dial trunk, 1 way outgoing trunk. PBX repeats dialed number to C.O. Centrex – commercial PBX. DSL – problems: loop qualification, distance, crosstalk. ADSL (1.5Mbps – 7Mbps Do ...
Slide 1
... same time, with additional bandwidth being allocated to priority applications when needed ...
... same time, with additional bandwidth being allocated to priority applications when needed ...
Designing a VoIP Network
... we will send. From Traffic Distribution Forecast, we know how much traffic we will receive. ...
... we will send. From Traffic Distribution Forecast, we know how much traffic we will receive. ...
Click - California State University, Northridge
... A single burst can contain multiple Concatenated MAC PDUs The PHY burst can contain multiple FEC blocks MAC PDUs may span FEC block boundaries The TC(Transmission convergence) layer between the MAC and PHY allows for capturing the start of the next MAC PDU in case of erroneous FEC blocks ...
... A single burst can contain multiple Concatenated MAC PDUs The PHY burst can contain multiple FEC blocks MAC PDUs may span FEC block boundaries The TC(Transmission convergence) layer between the MAC and PHY allows for capturing the start of the next MAC PDU in case of erroneous FEC blocks ...
QoS Support in 802.11 Wireless LANs
... network would not have been possible without signaling integrated into switches ...
... network would not have been possible without signaling integrated into switches ...
presentation source
... No need for added software on clients Provided by many ISPs PPTP access concentrator at ISP access point Some security limitations No security between user site and ISP No message-by-message authentication of user ...
... No need for added software on clients Provided by many ISPs PPTP access concentrator at ISP access point Some security limitations No security between user site and ISP No message-by-message authentication of user ...
Computing Systems Division
... Analysis of digital media, tools and techniques used by forensic agencies. and standards of evidence handling Operating systems, log and configuration files, data redundancy and protection. Recovery of data that has been obscured. Network activity monitoring and tracing. ...
... Analysis of digital media, tools and techniques used by forensic agencies. and standards of evidence handling Operating systems, log and configuration files, data redundancy and protection. Recovery of data that has been obscured. Network activity monitoring and tracing. ...
1. Application layer, Transport layer, Internet layer, Link layer 2
... PDU at the Layer 2 of the OSI model. A packet is encapsulated in one of more frames (depending on the size of the packet and maximum transmission unit of the frame) e.g. in Ethernet frames. 5. Connection-oriented protocols require that a logical connection be established between two device before tr ...
... PDU at the Layer 2 of the OSI model. A packet is encapsulated in one of more frames (depending on the size of the packet and maximum transmission unit of the frame) e.g. in Ethernet frames. 5. Connection-oriented protocols require that a logical connection be established between two device before tr ...
The Internet of Unpatched Things Sarthak Grover and Nick Feamster Princeton University
... Many different manufacturers, small startups, novice programmers Low capability hardware, not enough for security protocols Most data goes to an online server on the cloud Even devices in the same home communicate via the cloud ...
... Many different manufacturers, small startups, novice programmers Low capability hardware, not enough for security protocols Most data goes to an online server on the cloud Even devices in the same home communicate via the cloud ...
Part I: Introduction
... OSPF “advanced” features (not in RIP) Security: all OSPF messages are authenticated (to ...
... OSPF “advanced” features (not in RIP) Security: all OSPF messages are authenticated (to ...
SNMP
... Network operators need tools to monitor and manage networks remotely. True even if the network is relatively small. Examples: How many IP fragments did this router create? How long has the server been running? Which host is about to shutdown? Types of management Performance Fault ...
... Network operators need tools to monitor and manage networks remotely. True even if the network is relatively small. Examples: How many IP fragments did this router create? How long has the server been running? Which host is about to shutdown? Types of management Performance Fault ...
GEPS Programming Tutorial
... discover what suitable networks can be heard. In 802.11, access points send special beacon packets at regular intervals, containing the information required by a Station that wishes to associate with their network. A Station can also send a probe request, which will cause any access point that recei ...
... discover what suitable networks can be heard. In 802.11, access points send special beacon packets at regular intervals, containing the information required by a Station that wishes to associate with their network. A Station can also send a probe request, which will cause any access point that recei ...