Passive Identification and Analysis of TCP Anomalies
... the retransmission timer (RT > RTO), the segment is classified as an Unneeded Retransmission by RTO (Un. RTO); ii) if 3 duplicate ACKs have been observed, the segment is classified as an Unneeded Retransmission by Fast Retransmit (Un. FR); iii) otherwise, if none of the previous conditions holds, we ...
... the retransmission timer (RT > RTO), the segment is classified as an Unneeded Retransmission by RTO (Un. RTO); ii) if 3 duplicate ACKs have been observed, the segment is classified as an Unneeded Retransmission by Fast Retransmit (Un. FR); iii) otherwise, if none of the previous conditions holds, we ...
Chapter 7 Outline
... Computer A responds with its own ACK message, and the connection running in the other direction is now closed. The FIN and ACK control bits cannot be combined in the same message, as with the SYN/ACK bits in the connection establishment process. Sometimes the connection can be terminated in only one ...
... Computer A responds with its own ACK message, and the connection running in the other direction is now closed. The FIN and ACK control bits cannot be combined in the same message, as with the SYN/ACK bits in the connection establishment process. Sometimes the connection can be terminated in only one ...
ppt
... Note Flow control is a subset of congestion control. The former attempts to properly match the rate of the sender with that of the network and receiver. The later deals with the sustained overload of intermediate network elements such as internetwork routers. ...
... Note Flow control is a subset of congestion control. The former attempts to properly match the rate of the sender with that of the network and receiver. The later deals with the sustained overload of intermediate network elements such as internetwork routers. ...
Identifying Performance Bottlenecks in CDNs through TCP-Level Monitoring
... the performance of the connection by a small congestion window. Our tool detects congestion when (a) the connection is limited by congestion window and (b) a packet loss has occurred (i.e., the number of retransmissions has increased). When the connection is no longer limited by the congestion windo ...
... the performance of the connection by a small congestion window. Our tool detects congestion when (a) the connection is limited by congestion window and (b) a packet loss has occurred (i.e., the number of retransmissions has increased). When the connection is no longer limited by the congestion windo ...
Chapter 2 Protocols and Architecture
... • A theoretical system delivered too late! • TCP/IP is the de facto standard ...
... • A theoretical system delivered too late! • TCP/IP is the de facto standard ...
Defense Techniques
... • but accesses higher-level protocol information – allows to track sessions (e.g. ftp) – virtual sessions for connection-less protocols (e.g. UDP) • firewall stores ports used in a particular UDP transaction • temporarily creates an exception to let the answer pass ...
... • but accesses higher-level protocol information – allows to track sessions (e.g. ftp) – virtual sessions for connection-less protocols (e.g. UDP) • firewall stores ports used in a particular UDP transaction • temporarily creates an exception to let the answer pass ...
ppt
... • Hits black-holed IP space frequently Only 28.6% of IP space is allocated Detect worms by monitoring unused addresses ...
... • Hits black-holed IP space frequently Only 28.6% of IP space is allocated Detect worms by monitoring unused addresses ...
ipqos05
... Voice traffic should be dropped only under extreme congestion. Routing protocol traffic should be less drop resistant than VoIP (depends on the routing protocol and control over amount of VoIP traffic). Configure WRED with default values on an interface first and tune the per-precedence parame ...
... Voice traffic should be dropped only under extreme congestion. Routing protocol traffic should be less drop resistant than VoIP (depends on the routing protocol and control over amount of VoIP traffic). Configure WRED with default values on an interface first and tune the per-precedence parame ...
These reservations are recognized by the authority on TCP/IP
... protocol of the Internet. It can also be used as a communications protocol in a private network (Ethernet) When you set up a direct access to the Internet, your computer is provided with a copy of the TCP/IP program just as every other computer that you may send messages to or get information from a ...
... protocol of the Internet. It can also be used as a communications protocol in a private network (Ethernet) When you set up a direct access to the Internet, your computer is provided with a copy of the TCP/IP program just as every other computer that you may send messages to or get information from a ...
Lecture Note Ch.2
... that although physical addresses change from hop to hop, logical and port addresses remain the same from the source to destination. ...
... that although physical addresses change from hop to hop, logical and port addresses remain the same from the source to destination. ...
IP Internet Protocol Based on notes from D. Hollinger Netprog 2002 TCP/IP
... reassembly is done only at the destination (not on a hop-by-hop basis). If any of the fragments are lost - the entire datagram is discarded (and an ICMP message is sent to the sender). Netprog 2002 TCP/IP ...
... reassembly is done only at the destination (not on a hop-by-hop basis). If any of the fragments are lost - the entire datagram is discarded (and an ICMP message is sent to the sender). Netprog 2002 TCP/IP ...
Overview - La Revue MODULAD
... • Capture data packets from the network – No insertion of own packets, just listen! – Obtain information from the captured data ...
... • Capture data packets from the network – No insertion of own packets, just listen! – Obtain information from the captured data ...
ppt - Applied Crypto Group at Stanford University
... Path identifier used to limit # reqs from one source Receiver responds with capability Sender includes capability in all future packets ...
... Path identifier used to limit # reqs from one source Receiver responds with capability Sender includes capability in all future packets ...
No Slide Title
... grail:/users/faculty/arndt> more /etc/hosts ## Configured using SAM by root on Mon Jul 11 15:30:33 1994 ...
... grail:/users/faculty/arndt> more /etc/hosts ## Configured using SAM by root on Mon Jul 11 15:30:33 1994 ...
Getting Started
... – How to Share the Bandwidth Evenly? – How to Recover From Data Errors? • The Solution – Packet Based, not Circuit Based – Packet Size Limits – Large Packages broken-up into Smaller Packets – Each Packet Can Travel A Different Route ...
... – How to Share the Bandwidth Evenly? – How to Recover From Data Errors? • The Solution – Packet Based, not Circuit Based – Packet Size Limits – Large Packages broken-up into Smaller Packets – Each Packet Can Travel A Different Route ...
Lecturing Notes 1
... • [2] Error Control and Loss Recovery – Refer to a set of techniques to detect and correct data losses – Two levels of error control » Bit-level: inversion of 0 bit to 1, or 1 bit to 0, also called bit corruption => often occur over the mobile and wireless networks » Packet-level: packet loss, dupli ...
... • [2] Error Control and Loss Recovery – Refer to a set of techniques to detect and correct data losses – Two levels of error control » Bit-level: inversion of 0 bit to 1, or 1 bit to 0, also called bit corruption => often occur over the mobile and wireless networks » Packet-level: packet loss, dupli ...
429-07a-TCPIP
... Make a call to the “resolver” (or, in most PCs, the “stub resolver”) to get a numeric address. The answer may come from local storage, or may itself require a network transmission using the Domain Name System (DNS) protocols. The name space and the address space are unrelated, except that they ...
... Make a call to the “resolver” (or, in most PCs, the “stub resolver”) to get a numeric address. The answer may come from local storage, or may itself require a network transmission using the Domain Name System (DNS) protocols. The name space and the address space are unrelated, except that they ...
