Detecting Flood-based Denial-of-Service Attacks with SNMP/RMON Abstract
... is a special purpose Management Information Base (MIB) designed for the SNMP (Simple Network Management Protocol), which tracks low-level network usage indicators, such as byte and packet count, packet size, and packet transmission error events. Using RMON data polled from a live enterprise network, ...
... is a special purpose Management Information Base (MIB) designed for the SNMP (Simple Network Management Protocol), which tracks low-level network usage indicators, such as byte and packet count, packet size, and packet transmission error events. Using RMON data polled from a live enterprise network, ...
4th Edition: Chapter 1
... 1.4 delay, loss, throughput in networks 1.5 protocol layers, service models 1.6 networks under attack: security 1.7 history ...
... 1.4 delay, loss, throughput in networks 1.5 protocol layers, service models 1.6 networks under attack: security 1.7 history ...
3rd Edition: Chapter 4 - Communications Systems Center
... 1. Subtract 20 from original length: 4000 -20 = 3980 (bytes of "IP data") 2. Subtract 20 from new MTU: 1500- 20 = 1480 (max. bytes of data in each fragment) 3. Divide "maximum data bytes" by 8: 1480/8 = 185 to get offset increment 4. Offset of each fragment "n" (n = 0, 1, 2, ...) = n x "offset incre ...
... 1. Subtract 20 from original length: 4000 -20 = 3980 (bytes of "IP data") 2. Subtract 20 from new MTU: 1500- 20 = 1480 (max. bytes of data in each fragment) 3. Divide "maximum data bytes" by 8: 1480/8 = 185 to get offset increment 4. Offset of each fragment "n" (n = 0, 1, 2, ...) = n x "offset incre ...
4th Edition: Chapter 1
... 1.4 delay, loss, throughput in networks 1.5 protocol layers, service models 1.6 networks under attack: security 1.7 history ...
... 1.4 delay, loss, throughput in networks 1.5 protocol layers, service models 1.6 networks under attack: security 1.7 history ...
Slides
... Packet loss queue (aka buffer) preceding link in buffer has finite capacity packet arriving to full queue dropped (aka lost) lost packet may be retransmitted by previous node, by source end system, or ...
... Packet loss queue (aka buffer) preceding link in buffer has finite capacity packet arriving to full queue dropped (aka lost) lost packet may be retransmitted by previous node, by source end system, or ...
information technology
... MIT NE 302 Elective - V MIT NE 303 Global Elective MIT NE 304 Master’s Thesis ...
... MIT NE 302 Elective - V MIT NE 303 Global Elective MIT NE 304 Master’s Thesis ...
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 ...
Chapter 1 - EECS User Home Pages
... Packet loss queue (aka buffer) preceding link in buffer has finite capacity packet arriving to full queue dropped (aka lost) lost packet may be retransmitted by previous node, by source end system, or not at all ...
... Packet loss queue (aka buffer) preceding link in buffer has finite capacity packet arriving to full queue dropped (aka lost) lost packet may be retransmitted by previous node, by source end system, or not at all ...
What is routing?
... A subnet mask is a 32-bit value that identifies which bits in an address represent network bits and which represent host bits. ...
... A subnet mask is a 32-bit value that identifies which bits in an address represent network bits and which represent host bits. ...
Carrier
... • Existing networks have been designed for telephony : static traffic patterns • Inefficient in handling the new traffic patterns that are dominated by data services. ...
... • Existing networks have been designed for telephony : static traffic patterns • Inefficient in handling the new traffic patterns that are dominated by data services. ...
Overview of Switches
... received through the packet switching method instead of sending the same signal to every port. Through the packet examination it finds out the source and the destination details of every packet and forwards the packets accordingly to their destination. This process ultimately conserves a lot of netw ...
... received through the packet switching method instead of sending the same signal to every port. Through the packet examination it finds out the source and the destination details of every packet and forwards the packets accordingly to their destination. This process ultimately conserves a lot of netw ...
Class Notes 2
... Multiple same-cost paths allowed (only one path in RIP) For each link, multiple cost metrics for different TOS (e.g., satellite link cost set “low” for best effort; high for real time) Integrated uni- and multicast support: Multicast OSPF (MOSPF) uses same topology data base as OSPF Hierarchical O ...
... Multiple same-cost paths allowed (only one path in RIP) For each link, multiple cost metrics for different TOS (e.g., satellite link cost set “low” for best effort; high for real time) Integrated uni- and multicast support: Multicast OSPF (MOSPF) uses same topology data base as OSPF Hierarchical O ...
PPT - Computer Networking - A Top
... we learned how to do this already (chapter 3)! seldom used on low bit error link (fiber, some twisted pair) wireless links: high error rates • Q: why both link-level and end-end reliability? 5: DataLink Layer ...
... we learned how to do this already (chapter 3)! seldom used on low bit error link (fiber, some twisted pair) wireless links: high error rates • Q: why both link-level and end-end reliability? 5: DataLink Layer ...
Slides
... • To Study the Evolution of the Internet from a simple Data only Network into a true multiservice Network that supports multimedia applications and their protocols with appropriate performance and cost. ...
... • To Study the Evolution of the Internet from a simple Data only Network into a true multiservice Network that supports multimedia applications and their protocols with appropriate performance and cost. ...
Multimedia Applications
... • RTP is for sending audio/video data streams • RTCP is used for exchanging information between senders/receivers about the streams and users • There are 5 types of RTCP messages: – Sender report: sender periodically sends a report to receivers; includes at least an absolute timestamp so receivers c ...
... • RTP is for sending audio/video data streams • RTCP is used for exchanging information between senders/receivers about the streams and users • There are 5 types of RTCP messages: – Sender report: sender periodically sends a report to receivers; includes at least an absolute timestamp so receivers c ...
K8 - Technical Specification (word)
... the panel or global groups of relays system wide. Each switch input can be configured for connection to standard Gentec switches, momentary 24VAC switches or maintained contract 24VAC switches. Each input can also be configured to be ON or OFF only. The inputs may also be configured to have interloc ...
... the panel or global groups of relays system wide. Each switch input can be configured for connection to standard Gentec switches, momentary 24VAC switches or maintained contract 24VAC switches. Each input can also be configured to be ON or OFF only. The inputs may also be configured to have interloc ...
NetLight SNMP Management
... 1. Open a terminal application on the computer, such as Tera Term Pro. 2. While the RS-232 port is connected, connect the NetLight to the electricity. The boot application starts and the following screen appears: ...
... 1. Open a terminal application on the computer, such as Tera Term Pro. 2. While the RS-232 port is connected, connect the NetLight to the electricity. The boot application starts and the following screen appears: ...
Estimating Packet Error Rate caused by Interference
... coding rate than the data, so that the performance of the transmission is generally limited by the performance of the data portion of the packet. This is somewhat true when considering interference, but not always true. At low SIR the errors typically occur in the data portion of the packet, so it i ...
... coding rate than the data, so that the performance of the transmission is generally limited by the performance of the data portion of the packet. This is somewhat true when considering interference, but not always true. At low SIR the errors typically occur in the data portion of the packet, so it i ...
Week5 - University of Sydney
... fair or unfair (what if we want isochronous data ?) correct - what if algorithms too complex? robust - can deal with router reboot? stable - do routing changes stabilize in distributed system? efficient - all routing and no data not good ...
... fair or unfair (what if we want isochronous data ?) correct - what if algorithms too complex? robust - can deal with router reboot? stable - do routing changes stabilize in distributed system? efficient - all routing and no data not good ...
PPT_ch05
... • Cable performance tester, line tester, or certifier – Performs similarly to continuity testers but can be used to: • Measure distance to a connectivity device, termination point, or cable fault ...
... • Cable performance tester, line tester, or certifier – Performs similarly to continuity testers but can be used to: • Measure distance to a connectivity device, termination point, or cable fault ...
01_KUL - 22.03.2017
... IEC 61850 is a standard for vendor-agnostic engineering of the configuration of Intelligent Electronic Devices for electrical substation automation systems to be able to communicate with each other. IEC 61850 is a part of the International Electrotechnical Commission's (IEC) Technical Committee 57 ( ...
... IEC 61850 is a standard for vendor-agnostic engineering of the configuration of Intelligent Electronic Devices for electrical substation automation systems to be able to communicate with each other. IEC 61850 is a part of the International Electrotechnical Commission's (IEC) Technical Committee 57 ( ...
GPRS in BSS overview
... • GPRS enables efficient use of radio resources by allowing many data users to share the same interface on a statistical basis. •The main benefits of GPRS are that it reserves radio resources only when there is data to be sent • Mobile users doesn’t have to connect to the network each time he wants ...
... • GPRS enables efficient use of radio resources by allowing many data users to share the same interface on a statistical basis. •The main benefits of GPRS are that it reserves radio resources only when there is data to be sent • Mobile users doesn’t have to connect to the network each time he wants ...