cFosSpeed

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cFosSpeed
Developer(s)cFos Software GmbH
Initial release7 July 2004; 17 years ago (2004-07-07)
Stable release
12.00 / 15 June 2021; 8 months ago (2021-06-15)
Preview release
12.01.2519 / 7 March 2022; 6 days ago (2022-03-07)
Operating systemWindows 11, Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows XP, Windows Server 2003 and Windows Server 2008
PlatformIA-32 and x86-64
TypeTraffic shaping
LicenseShareware
Websitewww.cfos.de/en/cfosspeed/cfosspeed.htm

cFosSpeed is 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 is difficult to uninstall.[1]

A version of the software is bundled with some Gigabyte motherboards under the name "Gigabyte Speed"[2] and some ASRock motherboards as "XFast LAN".[3]

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]

Similar Products[]

References[]

  1. ^ Loynds, Joel (5 October 2021). "cFosSpeed: How to Uninstall on Windows 11 and 10". PC Guide. Retrieved 16 January 2022.
  2. ^ "GIGABYTE - Motherboard - Socket 1150 - GA-Z87X-D3H (rev. 1.x)". Gigabyte website. Gigabyte Technology. Retrieved 2015-10-03.
  3. ^ "ASRock XFast LAN - cFos Software". cFos website. cFos Software GmbH. Retrieved 2014-01-14.
  4. ^ Loynds, Joel (5 October 2021). "cFosSpeed: How to Uninstall on Windows 11 and 10". PC Guide. Retrieved 16 January 2022.
  5. ^ Lüders, Christoph; Winkler, Martin (20 February 2008). "Tweaking TCP/IP". The H Online. Heise Media UK Ltd.
  6. ^ "List of cFosSpeed's features". cFos website. cFos Software GmbH. Retrieved 18 January 2011.
  7. ^ "Filter language used to classify packets". cFos website. cFos Software GmbH. Retrieved 18 January 2011.

External links[]

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