Network Security CS 478/CIS 678
... User Datagram Protocol (UDP) • UDP can be used instead of TCP to address an application • Does NOT support end-to-end retransmission, reorder out-of-order packets, or perform flow control or congestion control. • Addresses applications via 16-bit Port number Protocol: • UDP is connectionless, which ...
... User Datagram Protocol (UDP) • UDP can be used instead of TCP to address an application • Does NOT support end-to-end retransmission, reorder out-of-order packets, or perform flow control or congestion control. • Addresses applications via 16-bit Port number Protocol: • UDP is connectionless, which ...
Week_Two_2_ppt
... transmission of data packets. Dividing a continuous stream of data into small units called packets, enables data from multiple devices on a network to share the same communications channel simultaneously, but requires precise routing information. Packet switch is a physical device that makes it poss ...
... transmission of data packets. Dividing a continuous stream of data into small units called packets, enables data from multiple devices on a network to share the same communications channel simultaneously, but requires precise routing information. Packet switch is a physical device that makes it poss ...
Internet Protocols - NYU Computer Science Department
... THIS IS NOT A TRIVIAL PROBLEM! – more on this later. ...
... THIS IS NOT A TRIVIAL PROBLEM! – more on this later. ...
fbla networking concepts
... A. A formal description of a set of rules and conventions that govern how devices on a network exchange information B. A set of guidelines that can be customized to meet individual needs C. The use of the same network topology for all networks D. All of the above ...
... A. A formal description of a set of rules and conventions that govern how devices on a network exchange information B. A set of guidelines that can be customized to meet individual needs C. The use of the same network topology for all networks D. All of the above ...
Introduction - Department of Electrical Engineering & Computer
... Distributed applications that use TCP and UDP can operate over the entire Internet Internet names, IP addresses, port numbers, sockets, connections, physical addresses ...
... Distributed applications that use TCP and UDP can operate over the entire Internet Internet names, IP addresses, port numbers, sockets, connections, physical addresses ...
IPv4 and IPv6
... This field defines the higher level protocol (transport-layer) that uses the services of IP-layer. An IP datagram can encapsulate data from several higher-level protocols such as: TCP=6, UDP=17, ICMP=1, IGMP=2, OSPF=89. This field specifies the final destination protocol to which the IP datagram sho ...
... This field defines the higher level protocol (transport-layer) that uses the services of IP-layer. An IP datagram can encapsulate data from several higher-level protocols such as: TCP=6, UDP=17, ICMP=1, IGMP=2, OSPF=89. This field specifies the final destination protocol to which the IP datagram sho ...
Juniper and Vectra Networks Add New Class of Advanced
... Gateways to quarantine the infected device, stop communication with a C&C server, and prevent data exfiltration. There are two methods to bring feeds into the internal database of Juniper’s SecIntel framework where the SRX Series Services Gateways can retrieve and apply the feed information to firew ...
... Gateways to quarantine the infected device, stop communication with a C&C server, and prevent data exfiltration. There are two methods to bring feeds into the internal database of Juniper’s SecIntel framework where the SRX Series Services Gateways can retrieve and apply the feed information to firew ...
TCP and UDP
... rate sensitive • reliable transfer over UDP: • Application is responsible for error recovery of lost data ...
... rate sensitive • reliable transfer over UDP: • Application is responsible for error recovery of lost data ...
Powerpoint - Chapter 8
... The TCP/IP protocols were developed to support systems that use any computing platform or operating system. The TCP/IP protocol stack consists of four layers: link, internet, transport, and application. IP uses the ARP protocol to resolve IP addresses into the hardware addresses needed for data-link ...
... The TCP/IP protocols were developed to support systems that use any computing platform or operating system. The TCP/IP protocol stack consists of four layers: link, internet, transport, and application. IP uses the ARP protocol to resolve IP addresses into the hardware addresses needed for data-link ...
The nature of data center traffic: measurements & analysis
... cores) close by to get high bandwidth interconnections on the cheap, writers of data center applications prefer placing jobs that rely on heavy traffic exchanges with each other in areas where high network bandwidth is available. In topologies such as the one in Figure this translates to the engin ...
... cores) close by to get high bandwidth interconnections on the cheap, writers of data center applications prefer placing jobs that rely on heavy traffic exchanges with each other in areas where high network bandwidth is available. In topologies such as the one in Figure this translates to the engin ...
VoIP - Ball State University
... Internet primarily through an Internet Service Provider (ISP). e) Gateway from a business or residence to the public Internet by means of an analog modem and a dial-up connection through the Public Switched Telephone Network (PSTN). f) MGCP provides connection, signaling, and call control over the P ...
... Internet primarily through an Internet Service Provider (ISP). e) Gateway from a business or residence to the public Internet by means of an analog modem and a dial-up connection through the Public Switched Telephone Network (PSTN). f) MGCP provides connection, signaling, and call control over the P ...
The Visibility Fabric Architecture–A New Approach to
... within and outside physical enterprise network perimeters through wireless networks. In fact by 2015, it is predicted that mobile internet usage will overtake desktop internet usage.iii Enterprises and service providers are seeking new approaches to gain visibility into the traffic destined for thes ...
... within and outside physical enterprise network perimeters through wireless networks. In fact by 2015, it is predicted that mobile internet usage will overtake desktop internet usage.iii Enterprises and service providers are seeking new approaches to gain visibility into the traffic destined for thes ...
Using Udpcast to IP Multicast Data over Amateur
... same network as the transmitting computer. However, multicast packets are only accepted by a subset of all attached computers. That is, only those computers that agree to accept packets from a specific multicast address do so. Multicast addresses are in the range 224.0.0.0 through 239.255.255.255 an ...
... same network as the transmitting computer. However, multicast packets are only accepted by a subset of all attached computers. That is, only those computers that agree to accept packets from a specific multicast address do so. Multicast addresses are in the range 224.0.0.0 through 239.255.255.255 an ...
Part I: Introduction
... 16-bit identifier flgs offset time to upper Internet layer live checksum ...
... 16-bit identifier flgs offset time to upper Internet layer live checksum ...
here
... cores) close by to get high bandwidth interconnections on the cheap, writers of data center applications prefer placing jobs that rely on heavy traffic exchanges with each other in areas where high network bandwidth is available. In topologies such as the one in Figure this translates to the engin ...
... cores) close by to get high bandwidth interconnections on the cheap, writers of data center applications prefer placing jobs that rely on heavy traffic exchanges with each other in areas where high network bandwidth is available. In topologies such as the one in Figure this translates to the engin ...
Powerpoint
... • 1 bit used to say whether there are more fragments following this one in the original datagram • 1 bit used to say “do not fragment” (drop and send error message back to source if need to fragment) ...
... • 1 bit used to say whether there are more fragments following this one in the original datagram • 1 bit used to say “do not fragment” (drop and send error message back to source if need to fragment) ...
Prof. Younghee Lee
... » Pleasant surprises: These experts are in awe of the development of the Web and the explosion of information sources on top of the basic internet backbone. They also said they were amazed at the improvements in online search technology, the spread of peer-to-peer networks, and the rise of blogs. » ...
... » Pleasant surprises: These experts are in awe of the development of the Web and the explosion of information sources on top of the basic internet backbone. They also said they were amazed at the improvements in online search technology, the spread of peer-to-peer networks, and the rise of blogs. » ...
Introduction to Queue theory
... Packet length, P, is the length of a packet in bits. Link length, L, is the length of a link in meters. Data rate, R, is the rate at which bits can be sent, in bits/second, or b/s.1 Propagation delay, PROP, is the time for one bit to travel along a link of length, L. PROP = L/c. Transmission time, T ...
... Packet length, P, is the length of a packet in bits. Link length, L, is the length of a link in meters. Data rate, R, is the rate at which bits can be sent, in bits/second, or b/s.1 Propagation delay, PROP, is the time for one bit to travel along a link of length, L. PROP = L/c. Transmission time, T ...
- Aditya College of Engineering
... E-mail (electronic mail): A computer network can provide a powerful communication medium among employees. Every company that has two or more computers now has email (electronic mail), which employees generally use for daily communication. Voice over IP (VoIP): Telephone calls between employees m ...
... E-mail (electronic mail): A computer network can provide a powerful communication medium among employees. Every company that has two or more computers now has email (electronic mail), which employees generally use for daily communication. Voice over IP (VoIP): Telephone calls between employees m ...
Security Devices and Practices
... organization’s systems from misuse and unintentional denial-of-service conditions is the content filter – A content filter is a software program or a hardware/software appliance that allows administrators to restrict content that comes into a network – The most common application of a content filter ...
... organization’s systems from misuse and unintentional denial-of-service conditions is the content filter – A content filter is a software program or a hardware/software appliance that allows administrators to restrict content that comes into a network – The most common application of a content filter ...
VoIP Analysis Fundamentals with Wireshark…
... 2. Jitter: As jitter increases, the gateway becomes unable to correctly order the packets and the conversation will begin to sound choppy – Some devices utilize jitter buffer technology to compensate 3. Packet Loss: If packet loss is greater than the jitter buffer, the caller will hear dead air spac ...
... 2. Jitter: As jitter increases, the gateway becomes unable to correctly order the packets and the conversation will begin to sound choppy – Some devices utilize jitter buffer technology to compensate 3. Packet Loss: If packet loss is greater than the jitter buffer, the caller will hear dead air spac ...
r02
... • Loss recovery • Timeouts • Acknowledgement-driven recovery (selective repeat or cumulative acknowledgement) ...
... • Loss recovery • Timeouts • Acknowledgement-driven recovery (selective repeat or cumulative acknowledgement) ...
Repeaters and Hubs
... • Ports from multiple switches or segments • Use any end node type o Reasons for using VLAN • Separating user groups • Isolating connections • Identifying priority device groups • Grouping legacy protocol devices • Separating large network into smaller subnets ...
... • Ports from multiple switches or segments • Use any end node type o Reasons for using VLAN • Separating user groups • Isolating connections • Identifying priority device groups • Grouping legacy protocol devices • Separating large network into smaller subnets ...
投影片 1
... against threats from the other network (the one that is said to be "outside" the firewall). ...
... against threats from the other network (the one that is said to be "outside" the firewall). ...