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TCP and offload
* Distributed Denial of Service ( DDoS ) attack protection: load balancers can provide features such as SYN cookies and delayed-binding ( the back-end servers don't see the client until it finishes its TCP handshake ) to mitigate SYN flood attacks and generally offload work from the servers to a more efficient platform.
* TCP offload: different vendors use different terms for this, but the idea is that normally each HTTP request from each client is a different TCP connection.
A typical HBA is packaged as a combination of a Gigabit ( or 10 Gigabit ) Ethernet NIC, some kind of TCP / IP offload engine ( TOE ) technology and a SCSI bus adapter, which is how it appears to the operating system.
* Generic segmentation offload, a generalization of TCP segmentation offload in the Linux kernel
Moving some or all of these functions to dedicated hardware, a TCP offload engine, frees the system's main CPU for other tasks.
Instead of replacing the TCP stack with a TOE entirely, there are alternative techniques to offload some operations in co-operation with the operating system's TCP stack.
TCP checksum offload and large segment offload are supported by the majority of today's Ethernet NICs.
Newer techniques like large receive offload and TCP acknowledgment offload are already implemented in some high-end Ethernet hardware, but are effective even when implemented purely in software.
Many of the CPU cycles used for TCP / IP processing are " freed-up " by TCP / IP offload and may be used by the CPU ( usually a server CPU ) to perform other tasks such as file system processing ( in a file server ) or indexing ( in a backup media server ).
In other words, a server with TCP / IP offload can do more server work than a server without TCP / IP offload NICs.
) whose founder Larry Boucher and a number of Auspex engineers went on to found Alacritech in 1997 with the idea of extending the concept of network stack offload to TCP and implementing it in custom silicon.
Alacritech holds a number of patents in the area of TCP / IP offload.

TCP and engine
However, work was very slow on the engine, since John Carmack, the main programmer of Quake, was not only developing a full 3D engine, but also a TCP / IP networking model.
Real-time capability was added by Brad Garton and David Topper in the mid-1990s, with support for TCP socket connectivity, interactive control of the scheduler, and object-oriented embedding of the synthesis engine into fully featured applications.
On Quake, he wrote the original sound engine, the DOS TCP / IP network library, and added VESA 2. 0 support.
In 1972 all rotary engines had their die-cast rotor housing coated with a new process: The new Transplant Coating Process ( TCP ) featured sprayed-on steel which is then coated with chrome, giving greatly increased engine life.
After a connection has been established between the local host ( usually a server ) and a foreign host ( usually a client ) the connection and its state are passed to the TCP offload engine.
Part of the reason for this is that when merely forwarding packets, i. e. no local delivery, the TCP engine may not necessarily be invoked at all.
A socket object was added to the JavaScript engine and a " Services " server created which allowed simple TCP / IP services to be written easily.
The new version of hping, hping3, is scriptable using the Tcl language and implements an engine for string based, human readable description of TCP / IP packets, so that the programmer can write scripts related to low level TCP / IP packet manipulation and analysis in very short time.
# REDIRECT TCP offload engine
# REDIRECT TCP offload engine

TCP and TOE
A TCP Offload Engine, or " TOE Card ", offers an alternative to a full iSCSI HBA.
A TOE " offloads " the TCP / IP operations for this particular network interface from the host processor, freeing up CPU cycles for the main host applications.
The term, TOE, is often used to refer to the NIC itself, although circuit board engineers may use it to refer only to the integrated circuit included on the card which processes the TCP headers.
A TOE solution, located on the network interface, is located on the other side of the PCI bus from the CPU host so it can address this I / O efficiency issue, as the data to be sent across the TCP connection can be sent to the TOE from the CPU across the PCI bus using large data burst sizes with none of the smaller TCP packets having to traverse the PCI bus.
This is further compounded by the newness and vendor-specificity of this hardware, as compared to a well tested TCP / IP stack as is found in an operating system that does not use TOE.

TCP and is
The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite ( TCP / IP ) to serve billions of users worldwide.
The Transmission Control Protocol ( TCP ) is used when the response data size exceeds 512 bytes, or for tasks such as zone transfers.
This type of pivoting is restricted to certain TCP and UDP ports that are supported by the proxy.
Normally, it is also possible to send a push request over UDP to the push proxy which is more efficient than using TCP.
The Gopher protocol () is a TCP / IP application layer protocol designed for distributing, searching, and retrieving documents over the Internet.
When TCP / IP is used, each phone can have one or more IP addresses allocated.
The most notable example of internetworking is the Internet, a network of networks based on many underlying hardware technologies, but unified by an internetworking protocol standard, the Internet Protocol Suite, often also referred to as TCP / IP.
ICMP differs from transport protocols such as TCP and UDP in that it is not typically used to exchange data between systems, nor is it regularly employed by end-user network applications ( with the exception of some diagnostic tools like ping and traceroute ).
* The IPv6 header is not protected by a checksum ; integrity protection is assumed to be assured by both link-layer and higher-layer ( TCP, UDP, etc.
The Internet Protocol Suite is therefore often referred to as TCP / IP.
Transmission Control Protocol ( TCP ) is an example of a protocol that will adjust its segment size to be smaller than the MTU.
It is commonly known as TCP / IP, because of its most important protocols: Transmission Control Protocol ( TCP ) and Internet Protocol ( IP ), which were the first networking protocols defined in this standard.
One popular expression is that TCP / IP, the eventual product of Cerf and Kahn's work, will run over " two tin cans and a string.
Although this market segment is now much reduced, the technologies developed in this area continue to be influential on the Internet and in both Linux and Apple Mac OS X networking — and the TCP / IP protocol has now almost completely replaced IPX, AppleTalk, NBF, and other protocols used by the early PC LANs.
A good example is a server responsible for TCP / IP connections: If this server is restarted, applications will experience a " lost " connection, a normal occurrence in networked system.
Simple TCP / IP messaging ( telnet compatible ) is used to communicate with client sockets, each of which is identified with a ' player ' in the Virtual reality representation system.
A specific stream, analogous to a TCP / IP port or socket, is specified by using a Transport Service Access Point ( TSAP ).
The TCP / IP stack is based on the open source BSD stack as visible with SCCS what compatible tools.
In computing, the Post Office Protocol ( POP ) is an application-layer Internet standard protocol used by local e-mail clients to retrieve e-mail from a remote server over a TCP / IP connection.

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