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CFosSpeed
Traffic shaping software From Wikipedia, the free encyclopedia
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cFosSpeed is a traffic shaping software often bundled with MSI motherboards for the Windows operating system. The program attaches itself as a device driver to the Windows network stack where it performs packet inspection and layer-7 protocol analysis. It has been noted as causing some issues with network connections, and can be difficult to uninstall when bundled.[1]
A version of the software is bundled with some Gigabyte_Technology motherboards under the name "Gigabyte Speed"[2] and some ASRock motherboards as "XFast LAN".[3]
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Operational summary
The software divides data packets into different traffic classes through filtering rules. It has been noted to cause problems with some users' internet connections.[4] Data traffic can be classified and prioritized by program name, by layer-7 protocol, by TCP or UDP port numbers, by DSCP tags as well as many other criteria.
Outgoing traffic is queued and sent out in order of priority.[5] The program uses TCP flow control to send new data only after older data has been received. Data may also be throttled by lowering the TCP window size. The software contains a packet filter firewall.[6] Users are also able to write their own traffic classifications.[7]
In recent years some driver issues have been found with cFosSpeed but they are easily fixable.[8]
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