Unreferenced date December 2009 Orphan date November 2006 Terminal Originated TCP connection establishment method provides the terminal with a means to establish a Transmission Control Protocol TCP connection towards the Push Proxy Gateway that can be used for subsequent registration and Push technology push delivery . DEFAULTSORT To Tcp Category TCP IP Category Transport layer protocols ... more details
TOCRight TCP may stand for Computing Transmission Control Protocol , one of the core protocols of the Internet protocol suite Telephony control protocol , protocol included in the Bluetooth protocol stack Text Creation Partnership , an archival digitzation effort at the University of Michigan Medicine and drugs TCP antiseptic , the brand name of an antiseptic formerly containing Trichlorophenylmethyliodosalicyl, a germicide Tenocyclidine , a dissociative anesthetic drug with stimulant and hallucinogenic effects Toxin coregulated pilus, a prophage encoded protein synthesized at the same time as cholera toxin that allows Vibrio cholera to adhere to enterocytes Chemical compounds Tocopherol , a variety of naturally occurring, fat soluble alcohol which partially constitutes vitamin E Tricresyl phosphate , an organophosphate compound derived from cresol and phosphoric acid 1,2,3 trichloropropane , a suspected human carcinogen and a groundwater contaminant Politics Two candidate preferred vote in the Australian electoral system Trading Corporation of Pakistan Other Thermal conversion process , depolymerization process for reducing complex organic materials into light crude oil Taba International Airport IATA code , near Taba, Egypt Three card poker , a card game disambig de TCP es TCP eo TCP apartigilo fa TCP fr TCP ko TCP it TCP ja TCP pl TCP ro TCP zh TCP ... more details
IPstack T TCP Transactional Transmission Control Protocol TCP is a variant of the TCP protocol. It is an experimental TCP extension for efficient transaction oriented request response service. It was developed to fill the gap between TCP and User Datagram Protocol UDP , by Bob Braden in 1994. Its definition can be found in RFC 1644 that obsoletes RFC 1379 . This protocol is faster than TCP and delivery reliability is comparable to that of TCP. Unfortunately, T TCP suffers from several major security problems as described by Charles Hannum in September 1996. ref cite web author C. Hannum date September 1996 title Security Problems Associated with T TCP work unpublished work in progress url http www.mid way.org doc ttcp sec.txt ref ref cite journal date 1998 07 08 title T TCP vulnerabilities publisher Phrack Magazine volume vol. 8 issue issue 53 url http www.phrack.org issues.html?issue 53&id 6 archiveurl http web.archive.org web 20071018112125 http www.phrack.org issues.html?issue 53&id 6 archivedate 2007 10 18 ref It has not gained widespread popularity. RFC 1379 and RFC 1644 that define T TCP were moved to http tools.ietf.org html rfc2026 section 4.2.4 Historic Status in May 2011 by RFC 6247 for security reasons. See also TCP Cookie Transactions References reflist External links Example exploit of T TCP in a http seclists.org bugtraq 1998 Apr 0034.html post to Bugtraq by Vasim Valejev DEFAULTSORT T Tcp Category TCP IP Category Internet protocols Category Internet standards Category Transport layer protocols ru T TCP ... more details
Unreferenced date January 2010 dablink For Hypertext Caching Protocol, see HTCP H TCP is another implementation of Transmission Control Protocol TCP with an optimized congestion control algorithm for high speed networks with high latency LFN Long Fat Networks . It was created by researchers at the Hamilton Institute in Ireland. H TCP is an optional module in recent Linux 2.6 kernel computer science kernels . Principles of operation H TCP is a Packet loss loss based algorithm, using additive increase multiplicative decrease AIMD to control TCP s congestion window. It is one of many TCP congestion avoidance algorithms which seeks to increase the aggressiveness of TCP on high bandwidth delay product BDP paths, while maintaining TCP friendliness for small BDP paths. H TCP increases its aggressiveness in particular, the rate of additive increase as the time since the previous loss increases. This avoids the problem encountered by HSTCP and BIC TCP of making flows more aggressive if their windows are already large. Thus, new flows can be expected to converge to fairness faster under HTCP than HSTCP and BIC TCP. Strengths and weaknesses A side effect of increasing the rate of increase as the time since the last packet loss increases, is that flows which happen not to lose a packet when other ... this are currently in the research phase. The Linux implementation of H TCP also has an option for avoiding Round trip delay time RTT unfairness , which occurs in TCP Reno , but is a particular problem for most high speed variants of TCP although not FAST TCP . Name The algorithm was initially introduced as H TCP, without mention of what the H stands for. However, it is often called Hamilton TCP , for the Hamilton Institute where it was created. See also TCP congestion avoidance algorithm Transmission Control Protocol Development of TCP External links http www.hamilton.ie net htcp H TCP Home Page Category TCP IP compu network stub ... more details
TCP Fusion is an implementation of the transmission control protocol in Sun Microsystems Solaris 10 operating system. Category TCP IP Fusion Compu network stub ... more details
Multiple issues unreferenced December 2009 orphan November 2006 context October 2009 PO TCP refers to a Push Proxy Gateway originated Transmission Control Protocol TCP connection establishment method. The method provides the PPG with a means to establish a TCP connection towards the terminal that can be used for subsequent registration and push delivery. DEFAULTSORT Po Tcp Category TCP IP Internet stub ... more details
lowercase Portal Free software ucspi tcp is a public domain Unix Transmission Control Protocol TCP command line tool for building TCP client server applications. It consists of super server tcpserver and tcpclient application. From http www.lifewithqmail.org lwq.html Life with qmail , Dave Sill, 2 January 2006 http www.lifewithqmail.org lwq.html ucspi tcp Appendix B.3. ucspi tcp is an acronym for UNIX Client Server Program Interface for TCP, and it s pronounced ooks pie tee see pee . tcpserver features built in TCP Wrapper like access control. ucspi tcp competes with several other programs inetd , TCP server xinetd , a replacement for inetd mconnect client supplied as part of SunOS faucet and hose, part of the netpipe s package netcat External links http cr.yp.to ucspi tcp.html DEFAULTSORT Ucspi Tcp Category Unix network related software Unix stub ... more details
unreferenced date February 2007 TCP acceleration is the name of a series of techniques for achieving better throughput on an Internet connection than standard Transmission Control Protocol TCP achieves, without modifying the end applications. It is an alternative or a supplement to TCP tuning . Commonly used approaches include ACK pacing , TCP Proxy server transparent proxies in two or more middlebox es, and TCP Offload Engine TCP offload engines . TCP transparent proxies TCP transparent proxies ... TCP connections within the network. By adopting this procedure, they allow for the TCP flows ... a higher throughput. The idea of a TCP accelerator is to terminate TCP connections inside the network ... which guarantees a faster delivery of data to the receiver. Since TCP is a rate adaptive protocol, the rate at which the TCP sender injects packets into the network is directly proportional ... to combat these changes. Disadvantages of the method include the fact that the TCP session ... of the TCP ack mechanism when the ACK is received by the sender, the packet has been stored by the accelerator, not delivered to the receiver. Asymmetric TCP acceleration While TCP proxies require such devices ... the proxies are usually proprietary, asymmetric TCP acceleration is able to boost the network performance .... Asymmetric TCP acceleration implies the WAN side protocol has to be TCP of the same 5 tuples and states. The implementations typically terminate the TCP flows on the LAN side like the TCP proxies do. On the WAN side, however, they mirror the TCP state machines and establish forward the TCP flows to the peers. To accelerate, they usually run a compatible version of TCP with performance improvements on the WAN side. While most of the improvements, such as FAST TCP , Zeta TCP , etc., are focused on the TCP congestion avoidance algorithm , some also attempt to promote the performance of other aspects of the protocol. For instance, Zeta TCP provides more accurate loss detection and heuristic ... more details
primary sources date April 2012 BIC TCP Binary Increase Congestion control is an implementation of Transmission Control Protocol TCP with an optimized congestion control algorithm for high speed networks with high latency so called long fat network s . BIC has a unique congestion window cwnd algorithm. This algorithm tries to find the maximum where to keep the window at for a long period of time, by using a binary search algorithm. BIC TCP is implemented and used by default in Linux kernels 2.6.18 and above. The default implementation was again changed to CUBIC TCP in the 2.6.19 version. See also TCP congestion avoidance algorithm Transmission Control Protocol Development SCTP CUBIC TCP External links http research.csc.ncsu.edu netsrv ?q content bic and cubic Home Page. Category TCP IP compu network stub pt BIC TCP ru BIC TCP ... more details
TCP Westwood TCPW , is a sender side only modification to TCP New Reno that is intended to better handle large bandwidth delay product paths large pipes , with potential packet loss due to transmission or other errors leaky pipes , and with dynamic load dynamic pipes . TCP Westwood relies on mining the ACK stream for information to help it better set the congestion control parameters Slow Start Threshold ssthresh , and Congestion Window cwin . In TCP Westwood, an Eligible Rate is estimated and used by the sender to update ssthresh and cwin upon loss indication, or during its Agile Probing phase, a proposed modification to the well known Slow Start phase. In addition, a scheme called Persistent Non Congestion Detection PNCD has been devised to detect persistent lack of congestion and induce an Agile Probing phase to expeditiously utilize large dynamic bandwidth. The resultant performance gains in efficiency, without undue sacrifice of fairness, friendliness, and stability have been reported in numerous papers that can be found on http www.cs.ucla.edu NRL hpi tcpw The TCP WESTWOOD Home Page . Significant efficiency gains can be obtained for large leaky dynamic pipes, while maintaining fairness. Under a more appropriate criterion for friendliness, i.e. opportunistic friendliness , TCP Westwood is shown to have good, and controllable, friendliness. TCP Westwood plus is an evolution of TCP Westwood, in fact it was soon discovered that the Westwood bandwidth estimation algorithm did not work well in the presence of reverse traffic due to ack compression. The TCP Westwood version is implemented in the Linux kernel . See also TCP Westwood plus TCP Westwood TCP congestion avoidance algorithm Transmission Control Protocol Development of TCP External links http www.cs.ucla.edu NRL hpi tcpw TCP Westwood Home Page. Category TCP IP Westwood ... more details
IPstack TCP Vegas is a TCP congestion avoidance algorithm that emphasizes packet information technology ... Science Understanding TCP Vegas Theory and Practice ref ref http books.google.ae books?id tpRhoBidsOQC&pg PA132&dq TCP Vegas&hl en&ei 2zkS6OXE8L7lwe44oyoAg&sa X&oi book result&ct result&resnum 5&ved 0CEkQ6AEwBA v onepage&q TCP 20Vegas&f false Adaptive Vegas A Solution of Unfairness Problem for TCP Vegas Information networking convergence in broadband and mobile networking By Cheeha Kim ref TCP Vegas ... Reno as it detects congestion early and hence gives greater bandwidth to co existing TCP Reno flows ... 1999 2001 Richard IssuesInTCPVegas.pdf Issues in TCP Vegas ref ref http citeseer.ist.psu.edu brakmo94tcp.html TCP Vegas New Techniques for Congestion Detection and Avoidance CiteSeer page on the 1994 ... books?id TvntnQW6R5UC&pg PA61&dq TCP Vegas&hl en&ei 2zkS6OXE8L7lwe44oyoAg&sa X&oi book result&ct result&resnum 4&ved 0CEQQ6AEwAw v onepage&q TCP 20Vegas&f false 4.3 TCP Vegas The mathematics of Internet ...&pg PA235&dq TCP Vegas&hl en&ei 2zkS6OXE8L7lwe44oyoAg&sa X&oi book result&ct result&resnum 10&ved 0CGIQ6AEwCQ v onepage&q TCP 20Vegas&f false 5.4.5 TCP Vegas An Analytical Approach to Optical Burst Switched Networks By T. Venkatesh, C. Siva Ram Murthy ref TCP Vegas is one of several flavors of TCP congestion avoidance algorithms. It is one of a series of efforts at TCP tuning that adapt congestion ... vegas.pdf Lawrence S. Brakmo and Larry L. Peterson TCP Vegas End to End Congestion Avoidance on a Global Internet ref ref http citeseer.ist.psu.edu brakmo95tcp.html TCP Vegas End to End Congestion Avoidance ... by Lawrence Brakmo and Larry L. Peterson ref TCP Vegas has been implemented in the Linux kernel ref http neal.nu uw linux vegas Neal Cardwell A TCP Vegas Implementation for Linux ref , in FreeBSD ... 218152 ref and possibly in other operating system s as well. See also TCP congestion avoidance algorithm Transmission Control Protocol Development of TCP Development of TCP References reflist External ... more details
Advert date June 2011 Zeta TCP ref name Zeta TCP cite web url http www.appexnetworks.com white papers ZetaTCP.pdf title Whitepaper Zeta TCP Intelligent, Adaptive, Asymmetric TCP Acceleration ref refers to a set of proprietary Transmission Control Protocol TCP algorithms targeted to improve the end to end performance of TCP, regardless of whether the peer is Zeta TCP or any other TCP protocol stack, in other words, to be compatible with the existing TCP algorithms. It was designed and implemented by AppEx Networks AppEx Networks Corporation . Zeta TCP offers the following improvements primarily TCP congestion avoidance algorithm Congestion avoidance based on both latency and loss measures. Improved loss detection algorithm. Reverse control. Congestion Avoidance Most of the TCP stack implementations today use TCP congestion avoidance algorithm TCP New Reno TCP New Reno or its variations such as TCP ..., causing a plunge of the sending rate. This is one of the major reasons that the TCP based applications ... the Round trip delay time RTT is large. TCP Vegas and its variations, most notably FAST TCP , base .... But the latency based algorithms have their own FAST TCP Strengths and weaknesses limitations , too. Zeta TCP attempts to tackle the problem by combining the strength of both latency based ... close to each other. The TCP related RFCs New Reno and SACK, etc. explicitly defined how the first loss can be detected with high confidence. However, the detection of the losses after TCP enters the Slow ... that are equally suboptimal. Zeta TCP has introduced a simple but effective algorithm to calculate the loss ... packet. Therefore Zeta TCP is able to minimize the number of retransmitted packets, further improving the bandwidth utilization. Lab tests also confirmed that Zeta TCP retransmitted much fewer packets than the other TCP implementations under the same loss rate. Zeta TCP has also developed a mechanism ... by the sender, i.e., the peer. It can only hint the peer to send faster. Some TCP stacks take the hint ... more details
TCP Illinois is a variant of Transmission Control Protocol TCP congestion control protocol, developed at the University of Illinois at Urbana Champaign . It is especially targeted at high speed, long distance networks. A sender side modification to the standard TCP congestion control algorithm, it achieves a higher average throughput than the standard TCP, allocates the network resource fairly as the standard TCP, is compatible with the standard TCP, and provides incentives for TCP users to switch. Principles of operation TCP Illinois is a loss delay based algorithm, which uses packet loss as the primary congestion signal to determine the direction of window size change, and uses queuing delay as the secondary congestion signal to adjust the pace of window size change. Similarly to the standard TCP, TCP Illinois increases the window size W by math alpha W math for each acknowledgment, and decreases math W math by math beta W math for each loss event. Unlike the standard TCP, math alpha ... choice is demonstrated in Figure 1. Image Tcpillinois1.jpg Properties and Performance TCP Illinois increases the throughput much more quickly than TCP when congestion is far and increases ... throughput achieved is much larger than the standard TCP, see Figure 2. Image tcpillinois2.jpg It also has many other desirable features, like fairness, compatibility with the standard TCP, providing incentive for TCP users to switch, robust against inaccurate delay measurement. References http decision.csl.uiuc.edu tbasar valuetools06.ps TCP Illinois A loss and delay based congestion ... 13, 2006 See also H TCP BIC TCP HSTCP Transmission Control Protocol TCP FAST TCP External links http www.princeton.edu shaoliu tcpillinois index.html TCP Illinois Homepage http www.hamilton.ie net delay tests final.pdf Paper on experimental evaluation of TCP Illinois http www.hamilton.ie Hamilton Institute and http netlab.caltech.edu Caltech , March 2008. Category TCP IP Illinois Category Internet ... more details
Compound TCP CTCP is a Microsoft algorithm that was introduced as part of the Windows Vista and Window Server 2008 Transmission Control Protocol TCP stack. It is designed to aggressively adjust the sender s congestion window to optimise TCP for connections with large bandwidth delay product s while trying ... 949316 A hotfix that adds Compound TCP CTCP support to computers that are running Windows Server 2003 or Windows XP is available ref Principles of operation Like FAST TCP and TCP Vegas , Compound TCP ..., it does not seek to maintain a constant number of packets queued. Compound TCP maintains two ... is increased the same way that TCP Reno increases it. If the delay is small, the delay based window ... size to avoid the problem of persistent congestion reported for FAST and Vegas. Thus, unlike TCP Illinois and its precursor TCP Africa , Compound TCP can reduce its window in response to delay. This increases ... Windows Vista and 7. CTCP can be enabled with the command netsh interface tcp set global congestionprovider ctcp or disabled with the command netsh interface tcp set global congestionprovider none To display the current setting for CTCP use netsh interface tcp show global Parameter Add On Congestion ... TCP CTCP support to computers that are running Windows Server 2003 or Windows XP is available ref ... due to kernel API changes. ref http netlab.caltech.edu lachlan ctcp ref See also TCP congestion avoidance ... sridharan tcpm ctcp Compound TCP Internet Draft http research.microsoft.com research pubs view.aspx?type Technical 20Report&id 940 A Compound TCP Approach for High speed and Long Distance Networks July ... in the Next Generation TCP IP Stack , The Cable Guy http research.microsoft.com wn ctcp.aspx The Compound TCP for High speed and Long Distance Networks , Microsoft Research publication http www.networkperformancedaily.com 2006 12 vistas tcpip promises and peri.html Vista s TCP IP Promises and Perils ... TCP patch for Linux Enabling CTCP on 2003 XP x64 http blog.tiensivu.com aaron archives 1537 KB 949316 ... more details
Image TCPLiquid200.jpg right thumb 200ml TCP bottle TCP is a mild antiseptic , produced in France by Laboratoires Chemineau in Vouvray and sold in the United Kingdom by Omega Pharma . The brand name comes from its original chemical name , which was trichlorophenylmethyliodosalicyl not to be confused with 2,4,6 Trichlorophenol trichlorophenol , a common fungicide . Trichlorophenylmethyliodosalicyl was replaced ... cite web url http www.chemguide.co.uk qandc tcp.html title What exactly does the antiseptic TCP contain? work Chemguide author Jim Clark accessdate 2011 02 25 ref The liquid form of TCP is one of the most ... be identified by many as a generic antiseptic smell. Omega Pharma acquired the rights to TCP from ... after the end of June 2004. ref Forms TCP is currently available in 50 litre ml , 100 ml, 200 ml and 500 ... s. Uses The instructions contained on the TCP bottle state that TCP can be used for the following conditions Sore throat s Gargle a solution of TCP with 5 parts water twice a day. Do not swallow. Mouth ... 1 part TCP with 1 part water and apply freely. TCP may be used undiluted in an emergency . Boil s, spot s and pimple s Dab undiluted once every four hours. TCP can also be used as a mouthwash when ... not to swallow TCP. If one starts to feel unwell after using TCP, one should see a medical practitioner immediately. TCP should not be used on cats, as its phenol content makes it toxic to felines. Citation needed date August 2011 Ingredients TCP Liquid s active ingredients are halogenated phenols and phenol . One source says each mL of TCP antiseptic contains, Chlorinated Phenols 6.0 mg Phenol ... . In the media TCP was referred to numerous times in a running gag in Episode 2 of Series 2 of the BBC sitcom series One Foot in the Grave , alluding to its distinctive and long lasting odour. TCP was mentioned ... that one of his lovers always gargles with TCP after their trysts. See also Dettol antiseptic liquid ... pharm pfizerc tcp.html TCP datasheet Dead link date January 2011 Category Antiseptics ... more details
unreferenced date April 2012 CUBIC is an implementation of Transmission Control Protocol TCP with an optimized Network congestion avoidance congestion control algorithm for high speed networks with high latency LFN Long fat network Long Fat Networks . It is a less aggressive and more systematic derivative of BIC TCP , in which the window is a cubic function of time since the last congestion event, with the inflection point set to the window prior to the event. Being a cubic function, there are two components to window growth. The first is a concave portion where the window quickly ramps up to the window size before the last congestion event. Next is the convex growth where CUBIC probes for more bandwidth, slowly at first then very rapidly. CUBIC spends a lot of time at a plateau between the concave and convex growth region which allows the network to stabilize before CUBIC begins looking for more bandwidth. Another major difference between CUBIC and standard TCP flavors is that it does not rely on the receipt of ACKs to increase the window size. CUBIC s window size is dependent only on the last congestion event. With standard TCP, flows with very short Round trip delay time RTT s will receive ACKs faster and therefore have their congestion windows grow faster than other flows with longer RTTs. CUBIC allows for more fairness between flows since the window growth is independent of RTT. CUBIC TCP is implemented and used by default in Linux kernels 2.6.19 and above. See also TCP congestion avoidance algorithm Transmission Control Protocol Development SCTP BIC TCP DEFAULTSORT Cubic Tcp Category TCP IP compu network stub ru CUBIC TCP ... more details
IPstack TCP tuning techniques adjust the network congestion avoidance parameters of Transmission Control Protocol TCP connections over high bandwidth, high latency networks. Well tuned networks can perform ... with the Transmission control protocol TCP to refer to the number of bytes necessary to fill a TCP path , i.e. it is equal to the maximum number of simultaneous bits in transit between the transmitter ... The original TCP configurations supported Buffer computer science buffer s of up to 64 kBytes 64 ... automated and scheduled non real time data transfers to get the data to their final endpoints. TCP speed limits Maximum achievable throughput for a single TCP connection is determined by different factors ... other, less obvious limits for TCP throughput. Bit errors can create a limitation for the connection as well as round trip time . Window size see also TCP window scale option In computer networking , RWIN Transmission Control Protocol TCP Receive Window is the amount of Data computing data that a computer ... exceeds a certain limit, it may even Retransmission data networks retransmit . This is how TCP achieves reliable data transmission . Even if there is no packet loss in the network, Tcp receive window windowing can limit throughput. Because TCP transmits data up to the window size before waiting ... the next formula. where RWIN is the TCP Receive Window and RTT is the Round trip delay time round trip time for the path. At any given time, the window advertised by the receive side of TCP corresponds ... take the risk to have to drop received packets by lack of space. Unrelated to the TCP receive window ... optimal send memory size as for the receive memory size given above. TCP Options for High Performance A number of extensions have been made to TCP over the years to increase its performance over fast high RTT links long fat networks , or LFNs for short . TCP timestamps RFC 1323 play a double role they avoid ... reasonable to increase the TCP window beyond 64 kB, which can be done using the window scaling option ... more details
Orphan date February 2009 Type of Transmission Control Protocol which is designed to provide much higher throughput and scalability. External links http www.deneholme.net tom scalable Scalable TCP details http datatag.web.cern.ch datatag papers pfldnet2003 ctk.pdf CERN Paper about Scalable TCP http www.csm.ornl.gov dunigan net100 kelly.html Oak Ridge National Laboratory Protocol Speed Tests See also UDP based Data Transfer Protocol Compu sci stub Category Internet protocols Category TCP IP Category Transport layer protocols ... more details
NOTOC Infobox software name TCP Wrapper logo caption screenshot developer Wietse Venema latest release version 7.6 operating system Unix like genre Security license BSD licenses BSD license website ftp ftp.porcupine.org pub security index.html TCP Wrapper is a host based networking Access control list ACL system, used to Filter software filter network access to Internet protocol suite Internet Protocol servers on Unix like operating system s such as Linux or Berkeley Software Distribution BSD . It allows host or subnetwork IP address es, Hostname names and or ident query replies, to be used as tokens on which to filter for access control purposes. The original code was written by Netherlands Dutchman Wietse Venema in 1990 to monitor a cracker s activities on the Unix workstations at the Dept. of Math and Computer Science at the Eindhoven University of Technology . ref ftp ftp.porcupine.org pub security tcp wrapper.pdf TCP WRAPPER Network monitoring, access control, and booby traps. by Wietse Venema ref He maintained it until 1995, and on June 1, 2001, released it under its own BSD License ... files, TCP Wrappers have the benefit of Run time program lifecycle phase runtime ACL reconfiguration ... attempts are encountered. While originally written to protect Transmission Control Protocol TCP and User ... tcp wrapper source code , by Wietse Venema, on Bugtraq , Jan 21, 1999 ref ref http seclists.org ... article 1997 08 01 div External links http itso.iu.edu TCP Wrappers ITSO TCP Wrappers overview http docs.hp.com en 5991 4837 HP TCP Wrappers Information http www.softpanorama.org Net Network security TCP wrappers index.shtml Softpanorama TCP Wrappers Information http www.360is.com 03 tcpwrappers.htm A laymans guide to TCP Wrappers and its history http generationip.com documentation mini howto 116 howto on tcp wrapper Howto on tcp wrapper DEFAULTSORT Tcp Wrapper Category Unix network related ... network software cs TCP Wrapper es TCP Wrapper eu TCP Wrapper fr TCP Wrapper ja TCP Wrapper ... more details
FAST TCP also written FastTCP is a TCP congestion avoidance algorithm especially targeted at long distance, high latency links, developed at the http netlab.caltech.edu Netlab , California Institute of Technology and now being commercialized by http www.fastsoft.com FastSoft . It is compatible with existing TCP algorithms, requiring modification only to the computer which is sending data . Name The name FAST is a recursive acronym for F AST A QM S calable T CP, where AQM stands for A ctive Q ueue M anagement, and TCP stands for T ransmission C ontrol P rotocol. Principles of operation The role of congestion control is to moderate the rate at which data is transmitted, according to the capacity ... TCP Vegas , FAST TCP ref cite journal last Nick first Barone coauthors Jin, Cheng Low, Steven H. and Hegde, Sanjay date year 2006 month title FAST TCP motivation, architecture, algorithms, performance ... title FAST TCP from theory to experiments journal IEEE Network volume 19 issue 1 pages 4 11 url http ... probabilities are required to sustain high data rates in the case of TCP Reno, very low loss probabilities are required, but even new congestion avoidance algorithms such as H TCP , BIC TCP and HSTCP ... quantity and in principle provides more information about the network. A FAST TCP flow seeks ... descendant of TCP Vegas. The difference between TCP Vegas and FAST TCP lies in the way in which the rate is adjusted when the number of packets stored is too small or large. TCP Vegas makes fixed ... TCP makes larger steps when the system is further from equilibrium and smaller steps near equilibrium ... Unlike most TCP congestion avoidance algorithms, FAST TCP is protected by several patents. ref cite ... at the sender side with no other software or hardware modifications needed on either end. See also TCP ... Fast Tcp Category Internet protocols Category Internet standards Category Transport layer protocols es FAST TCP ... more details
Obfuscated TCP ObsTCP was a proposal for a transport layer protocol which implements opportunistic encryption over Transmission Control Protocol TCP . It was designed to prevent mass wiretapping and malicious corruption of TCP traffic on the internet , with lower implementation cost and complexity than Transport Layer Security TLS . In August 2008, IETF rejected the proposal for a TCP option, suggesting it be done on the application layer instead. ref Cite web author Adam Langley date 2008 08 15 title Sorry folks, I think Obfuscated TCP died publisher Obfuscated TCP development blog url http obstcp.blogspot.com 2008 08 sorry folks i think obfuscated tcp died.html ref The project has been inactive since a few months later. In 2010 June, a separate proposal called tcpcrypt has been submitted, which shares many of the goals of ObsTCP being transparent to applications, opportunistic and low overhead. It requires even less configuration no DNS entries or HTTP headers . Unlike ObsTCP, tcpcrypt ... 08 last first Dead link date October 2010 bot H3llBot ref The concept of obfuscating TCP communications ... used TCP options in SYN packets to advertise support for ObsTCP, the server responding with a public ... web url http www.ietf.org internet drafts draft eddy tcp loo 04.txt title Extending the Space Available for TCP Options publisher IETF accessdate 2009 05 08 last first Dead link date October 2010 ... support and keys, without modifying the operation of the underlying TCP protocol. ref cite web url http code.google.com p obstcp wiki History title Obfuscated TCP History publisher Google accessdate ... TCP traffic, without requiring public key certificate s, the services of Certificate authority Certificate ... TCP Clients Firefox publisher Google accessdate 2009 05 08 last first ref Widely supported by all ... Encryption Speed Very fast cryptography Slower TCP Port Can use any TCP port Typically uses port ... as SSL IPsec References reflist DEFAULTSORT Obfuscated Tcp Category TCP IP ... more details
TCP Friendly Rate Control TFRC is a congestion control mechanism designed for unicast flows operating in an Internet environment and competing with Transmission Control Protocol TCP traffic. The goal is to compete fairly with TCP traffic on medium timescales, but to be much less variable than TCP on short timescales. TCP congestion control works by maintaining a congestion window window of packets that have not yet been acknowledged. This window is increased by one packet every round trip time if no packets have been lost, and is decreased by half if a packet loss is detected. Thus TCP s window and hence throughput is a function of the losses observed in the network and the round trip time experienced by the flow. The idea behind TFRC is to measure the loss probability and round trip time and to use these as the parameters to a model of TCP throughput. The expected throughput from this model is then used to directly drive the transmit rate of a TFRC flow. http www.faqs.org rfcs rfc5348.html RFC 5348 TCP Friendly Rate Control TFRC Protocol Specification Category Flow control ... more details
TCP Westwood is a sender side only modification of the TCP Reno protocol stack that optimizes the performance of Transmission Control Protocol TCP congestion control over both wireline and wireless network s. TCP Westwood is based on end to end Bandwidth computing bandwidth estimation to set congestion window and slow start threshold after a congestion episode, that is, after three duplicate acknowledgments or a timeout. The bandwidth is estimated by properly low pass filter ing the rate of returning acknowledgment packets. The rationale of this strategy is simple in contrast with TCP Reno, which blindly halves the congestion window after three duplicate ACKs, TCP Westwood adaptively sets a slow start threshold and a congestion window which takes into account the bandwidth used at the time congestion is experienced. TCP Westwood significantly increases throughput over wireless links and fairness compared to TCP Reno TCP New Reno New Reno in wired networks. TCP Westwood is an evolution of TCP Westwood . The main idea of Westwood TCP, which is an end to end bandwidth estimation for setting control windows after congestion, was proposed by Saverio Mascolo . He came out with the idea after reading the chapter on TCP congestion control in the book Data Networks by Larry Peterson . The first implementation of TCP Westwood in ns2 was done at University of California at Los Angeles UCLA ... back to Italy and his evolution of Westwood TCP was named Westwood . The main novelty of Westwood ... students in 2003 and 2004. See also TCP Westwood TCP congestion avoidance algorithm Transmission ... Gerla, M. Y. Sanadidi and Ren Wang TCP Westwood Bandwidth Estimation for Enhanced Transport over Wireless ... Performance evaluation and comparison of Westwood , New Reno and Vegas TCP congestion control ACM Computer Communication Review, April 2004, Vol. 34 2 . S. Mascolo, G. Racanelli Testing TCP Westwood ... links http c3lab.poliba.it index.php Westwood TCP Westwood Home Page. Category TCP IP Westwood ... more details
Protocol TCP uses a network congestion avoidance algorithm that includes various aspects of an additive ... congestion avoidance. The TCP congestion avoidance algorithm is the primary basis for congestion ... algorithms used in TCP IP. ref ref RFC 2001 TCP Slow Start, Congestion Avoidance, Fast Retransmit, and Fast Recovery Algorithms ref ref RFC 5681 TCP Congestion Control ref ref RFC 3390 TCP Increasing TCP s Initial Window ref ref http www.eventhelix.com RealtimeMantra Networking TCP Congestion Avoidance.pdf TCP Congestion Avoidance Explained via a Sequence Diagram ref Naming history Two such variations are those offered by TCP Tahoe and Reno. The two algorithms were retrospectively named after the 4.3BSD .... The TCP Foo names for the algorithms appear to have originated in a 1996 paper by Kevin Fall and Sally ... of Tahoe, Reno and SACK TCP journal Computer Communications Review date July 1996 url ftp ftp.ee.lbl.gov papers sacks.ps.Z format PostScript ref TCP Tahoe and Reno To avoid congestive collapse congestion collapse , TCP uses a multi faceted congestion control strategy. For each connection, TCP ... end to end. This is somewhat analogous to TCP s Sliding Window Protocol sliding window used for Transmission Control Protocol Flow control flow control . TCP uses a mechanism called Slow start .... ref name kurose Slow start Fast recovery Fast Recovery . Reno Only In this state, TCP retransmits ..., TCP Reno experiences a timeout and enters the slow start state. Both algorithms reduce congestion window to 1 MSS on a timeout event. TCP Vegas main TCP Vegas Until the mid 1990s, all of TCP s set ... buffer. University of Arizona researchers Larry Peterson and Lawrence Brakmo introduced TCP ... buffer. In addition, TCP Vegas uses additive increases in the congestion window. This variant was not widely deployed outside Peterson s laboratory. In a comparison study of various TCP congestion control algorithms, TCP Vegas appeared to be the smoothest followed by TCP CUBIC ref cite web title ... more details
In computer networking, TCP Cookie Transactions TCPCT is an experimental extension of Transmission Control Protocol TCP intended to secure it against denial of service attack s, such as resource exhaustion by SYN flood ing and malicious connection termination by third parties. ref cite IETF title TCP Cookie Transactions rfc 6013 last1 Simpson first1 W. year 2011 month January accessdate March 16, 2012 ref Unlike the original SYN cookies approach, TCPCT does not conflict with other TCP extensions, but requires TCPCT support in the client initiator as well as the server responder TCP stack. ref name tcp robust cookies cite paper author Perry E. Metzger, William Allen Simpson, Paul Vixie date December 2009 title Improving TCP Security With Robust Cookies url http www.usenix.org publications login 2009 12 openpdfs metzger.pdf ref The immediate reason for the TCPCT extension is deployment of the DNSSEC protocol. Prior to DNSSEC, Domain Name System DNS requests primarily used short User Datagram Protocol UDP packets, but due to the size of DNSSEC exchanges, and shortcomings of IP fragmentation , UDP is less practical for DNSSEC. ref B. Carpenter and S. Brim, Middleboxes Taxonomy and Issues, RFC 3234, February 2002. ref ref P. Srisuresh and K. Egevang, Traditional IP Network Address Translator Traditional NAT , RFC 3022, January 2001 ref Thus DNSSEC enabled requests create a large number of short lived TCP connections. ref name tcp robust cookies ref cite paper author D. Wessels date June 2009 title DNSSEC, EDNS, and TCP url http www.nanog.org meetings nanog46 presentations Wednesday ... WAIT state. ref name tcp robust cookies TCPCT support was partly merged into the Linux kernel in December ... title TCP cookie transactions publisher LWN.net url http lwn.net Articles 366986 ref ref http kernelnewbies.org Linux 2 6 33 head 2c3c3a8cb87d5b7a6f1182e418abf071cda22c8c ref See also SYN cookies T TCP Transactional TCP References Reflist Category TCP IP Cookie Transactions Category Computer network ... more details
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