Ethernet - GITAM University
... TCP (Transmission Control Protocol) is the main transport protocol utilized in IP networks. The TCP protocol exists on the Transport Layer of the OSI Model. • The TCP protocol is a connection-oriented protocol which provides end-to-end reliability. • Internet protocol is the set of techniques used b ...
... TCP (Transmission Control Protocol) is the main transport protocol utilized in IP networks. The TCP protocol exists on the Transport Layer of the OSI Model. • The TCP protocol is a connection-oriented protocol which provides end-to-end reliability. • Internet protocol is the set of techniques used b ...
The Network Layer
... General Principles of Congestion Control 1. Monitor the system . – detect when and where congestion occurs. 2. Pass information to where action can be taken. 3. Adjust system operation to correct the problem. ...
... General Principles of Congestion Control 1. Monitor the system . – detect when and where congestion occurs. 2. Pass information to where action can be taken. 3. Adjust system operation to correct the problem. ...
The Network Layer
... General Principles of Congestion Control 1. Monitor the system . – detect when and where congestion occurs. 2. Pass information to where action can be taken. 3. Adjust system operation to correct the problem. ...
... General Principles of Congestion Control 1. Monitor the system . – detect when and where congestion occurs. 2. Pass information to where action can be taken. 3. Adjust system operation to correct the problem. ...
Department of Electrical and Computer Engineering Concordia
... Question 7. A TCP entity opens a connection and uses slow start. Approximately how many round-trip times are required before TCP can send N segments? Explain. Initially when a TCP connection is established, the number of segments which the sender can send is limited to 1. When the sender receives an ...
... Question 7. A TCP entity opens a connection and uses slow start. Approximately how many round-trip times are required before TCP can send N segments? Explain. Initially when a TCP connection is established, the number of segments which the sender can send is limited to 1. When the sender receives an ...
Hacking Part 1
... C:\> snmputil walk public
C:\> snmputil walk 10.10.0.2 public .1.3.6.1.4.1.77.1.2.25
Can provide usernames, OS version, share names/paths, running services,
etc.
Countermeasures:
Block TCP/UDP 161 at network perimeter
Use an excellent password
Disable SNMP if not require ...
... C:\> snmputil walk
The Infrastructure Technologies
... Packets can follow different routes to reach destination Error handling is important ...
... Packets can follow different routes to reach destination Error handling is important ...
Addressing
... No matter how well designed a network is, data loss will occasionally occur. Therefore, TCP provides methods of managing these segment losses. Among these is a mechanism to retransmit segments with unacknowledged data. A destination host service using TCP usually only acknowledges data for contiguou ...
... No matter how well designed a network is, data loss will occasionally occur. Therefore, TCP provides methods of managing these segment losses. Among these is a mechanism to retransmit segments with unacknowledged data. A destination host service using TCP usually only acknowledges data for contiguou ...
Games and the Impossibility of Realizable Ideal Functionality
... Sends packets to A that resemble B’s transmission E cannot receive, but may execute commands on A ...
... Sends packets to A that resemble B’s transmission E cannot receive, but may execute commands on A ...
Large-Scale Passive Network Monitoring using Ordinary
... • Load-balance to multiple tools - Symmetric hashing • Duplicate data to multiple delivery interfaces ...
... • Load-balance to multiple tools - Symmetric hashing • Duplicate data to multiple delivery interfaces ...
ppt
... By limiting the size of the sending window data flow from sender to receiver can be limited ...
... By limiting the size of the sending window data flow from sender to receiver can be limited ...
Pres1EvolutionofInternet - University of Scranton: Computing
... and fastest spreading DDoS attacks ever. Taking roughly 10 minutes to spread worldwide, the worm took down 5 of the 13 DNS root servers along with tens of thousands of other servers, and impacted a multitude of systems ranging from (bank) ATM systems to air traffic control to emergency (911) systems ...
... and fastest spreading DDoS attacks ever. Taking roughly 10 minutes to spread worldwide, the worm took down 5 of the 13 DNS root servers along with tens of thousands of other servers, and impacted a multitude of systems ranging from (bank) ATM systems to air traffic control to emergency (911) systems ...
notes
... • Circuit switching – physical path set up from source to destination before any data transmitted, e.g., phone system – Adv: no congestion problem, only delay is propagation time – Disadv: unused bandwidth on allocated circuit is wasted ...
... • Circuit switching – physical path set up from source to destination before any data transmitted, e.g., phone system – Adv: no congestion problem, only delay is propagation time – Disadv: unused bandwidth on allocated circuit is wasted ...
Introduction to the Network
... Packets can get lost anywhere: • Outgoing buffer at source • Router or link • Incoming buffer at destination ...
... Packets can get lost anywhere: • Outgoing buffer at source • Router or link • Incoming buffer at destination ...
PPT
... • client/server model • client host requests, receives service from server • e.g., WWW client (browser)/ server; email client/server ...
... • client/server model • client host requests, receives service from server • e.g., WWW client (browser)/ server; email client/server ...
Transport layer
... Every transmission of data is acknowledged by the receiver. Acknowledgements are cumulative. If the sender does not receive ACK within a specified amount of time, the sender retransmits the data. Accepts out of order but does Not send negative acknowledgements, if a segment is not acknowledged befor ...
... Every transmission of data is acknowledged by the receiver. Acknowledgements are cumulative. If the sender does not receive ACK within a specified amount of time, the sender retransmits the data. Accepts out of order but does Not send negative acknowledgements, if a segment is not acknowledged befor ...
Estinet open flow network simulator and emulator.
... • Provides no guarantee that an emulated host in Mininet that is ready to send a packetwill be scheduled promptly by the operating system. • Mininet can only be used to study the behavior of an OpenFlow controller but cannot be used to study any timerelated network/application performance. ...
... • Provides no guarantee that an emulated host in Mininet that is ready to send a packetwill be scheduled promptly by the operating system. • Mininet can only be used to study the behavior of an OpenFlow controller but cannot be used to study any timerelated network/application performance. ...
Lecture 14 - Personal Web Pages - University of North Carolina at
... – client host requests, receives service from always-on server – e.g. Web browser/server; email client/server ...
... – client host requests, receives service from always-on server – e.g. Web browser/server; email client/server ...
Transport Layer
... Every transmission of data is acknowledged by the receiver. Acknowledgements are cumulative. If the sender does not receive ACK within a specified amount of time, the sender retransmits the data. Accepts out of order but does Not send negative acknowledgements, if a segment is not acknowledged befor ...
... Every transmission of data is acknowledged by the receiver. Acknowledgements are cumulative. If the sender does not receive ACK within a specified amount of time, the sender retransmits the data. Accepts out of order but does Not send negative acknowledgements, if a segment is not acknowledged befor ...
3rd Edition: Chapter 3 - Communications Systems Center
... UDP: User Datagram Protocol [RFC 768] “no frills,” “bare bones” ...
... UDP: User Datagram Protocol [RFC 768] “no frills,” “bare bones” ...
3rd Edition: Chapter 3 - Georgia Institute of Technology
... UDP: User Datagram Protocol [RFC 768] “no frills,” “bare bones” ...
... UDP: User Datagram Protocol [RFC 768] “no frills,” “bare bones” ...
ppt
... • Reasonable goal: lowest power for max rate • But finding ths empirically is hard! Many {power, rate} combinations, and not always easy to predict how each will perform • Alternate goal: lowest power for max needed rate • But this interacts with other people because you use more channel time to sen ...
... • Reasonable goal: lowest power for max rate • But finding ths empirically is hard! Many {power, rate} combinations, and not always easy to predict how each will perform • Alternate goal: lowest power for max needed rate • But this interacts with other people because you use more channel time to sen ...
Home Energy Management
... power line of the home, it will have no trouble in communicating through the entirety of the home (i.e. through thick walls). Infrastructure already present ...
... power line of the home, it will have no trouble in communicating through the entirety of the home (i.e. through thick walls). Infrastructure already present ...
Explain how the TCP/IP protocols correlate to layers of
... Developed by Department of Defense ARPANET (1960s) Internet precursor Popularity Low cost Communicates between dissimilar platforms Open nature Routable Spans more than one LAN (LAN segment) Flexible Runs on combinations of network operating systems or network media Disadvantage: require ...
... Developed by Department of Defense ARPANET (1960s) Internet precursor Popularity Low cost Communicates between dissimilar platforms Open nature Routable Spans more than one LAN (LAN segment) Flexible Runs on combinations of network operating systems or network media Disadvantage: require ...
Northeastern Illinois University Department of Computer
... Question 6: Write the solution to the following problems a) Explain CSMA/CD (Carrier Sense Multiple Access with Collision Detection) in your own words by describing the steps that a computer most follow to transmit a frame. You must consider the scenarios were a collision occurs and the scenarios we ...
... Question 6: Write the solution to the following problems a) Explain CSMA/CD (Carrier Sense Multiple Access with Collision Detection) in your own words by describing the steps that a computer most follow to transmit a frame. You must consider the scenarios were a collision occurs and the scenarios we ...