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cFosSpeed 6.00 Build 1700 Final 32bit & 64bit Multilanguage + Key
cFosSpeed is a network driver, which attaches itself to existing Internet connections. It then optimizes data transfer by means of Traffic Shaping. Traffic Shaping is a method for optimizing the Internet traffic. It allows maximum speed while ensuring minimal Ping. You can use cFosSpeed with a router and/or a DSL-modem or cable-modem. You can also use cFosSpeed with other types of Internet access, ie. whenever you already have an existing Internet connection. cFosSpeed supports a wide variety of connections, like DSL, cable, ISDN, UMTS, etc. cFosSpeed has two goals - keep network delays (ping times) small, in order to make Internet applications as responsive as possible. And improve data throughput by avoiding network congestions. You can use cFosSpeed with an Internet connection you use exclusively or which you share with several PCs.
Traffic Shaping best for
* Broadband: DSL, Cable
* Narrow band: modem, ISDN
* Filesharing (P2P)
* Streaming Media, VoIP
* Low Ping
* Prioritising programs
* Prioritising protocols
* Online Budgets
cFosSpeed 6.00 build 1700 -- 13-Sep-2010
* cFosSpeed can now communicate with other cFosSpeed drivers on your LAN to
share statistical data of how much each of them sent. This increases the
accurary of traffic shaping with more than one machine. We call this
feature "net_talk". Statistics are sent out as UDP packets (by default on
port 889) five times a second with TTL 1 to your local subnet broadcast
address, so they will never leave your LAN.
cFosSpeed will show other party's traffic in the Liquid Crystal skins
together with your own traffic, just less intensely coloured. The Traffic
Analysis skins show the total traffic as small bars under the numerical
There is the new command "ts" or "talkstat" to see which other machines on
your LAN use cFosSpeed. The variable "net_talk" can be set to 0 to disable
this feature. You can change the UDP port number with the global variable
"net_talk_port"; it must be the same on all machines in the LAN.
* cFosSpeed now measures the variance of ping packets and uses this value
when shaping. Usually the variance is quite small (e.g. with DSL 16 mbit/s
it's about 4ms), but with wireless networks it can be substantially higher.
This value can be accessed via variable "variance" (spd set variance). If
you don't want this value to be automatically changed by cFosSpeed, set the
global variable "vari_fixed" to 1 (spd gset vari_fixed 1 -save).
The "variance" variable will not be automatically changed if you have
selected the variable non-cooperative algorithm, since cFosSpeed will not
know if changes in ping time are due to variance or traffic from other LAN
users. If you use more than one machine on the LAN, be sure to use cFosSpeed
on all of them with variable cooperative algorithm.
The statistical data on which the variance calculation is based will decay
after 15 minutes, so values that are too old will not be used.
* New skins added: "TA Insight Skin", with Windows 7 look and real-time
analysis. Both traffic analysis skins now have a ping variance display and
a traffic shaping indicator. The ping variance display shows the variance
and statistical certainty of the ping times of your connection. The traffic
shaping indicator flashes whenever a packet is prioritized, i.e. when it is
sent faster than it would without traffic shaping.
* Technology update: cFosSpeed is now an NDIS 6 driver for Vista and Windows 7.
Thereby cFosSpeed supports the improved performance of the new network
* Mobile Broadband Plattform of Windows 7 is now supported. So users of UMTS,
WCDMA, CDMA2000, etc. equipment with native mobile broadband drivers can now
enjoy the benefits of cFosSpeed Traffic Shaping.
* The "Programs" and "Protocols" dialogs under "Settings" now allow setting
tx-limits per program resp. per protocol, i.e. maximum send speeds. See
below for "limit classes and filters" for a more technical explanation of the
* New adapter info dialog to display info about the network cards in your
system. There is detailed info for WLAN and WWAN. For WLAN you can
try to use the channel recommendation for best throughput in "crowded"
areas. But remember the frequency usage may change from minute to minute.
For WWAN (Win 7 mobile broadband adapters) you get detailed information
about the state of your UMTS/WCDMA/Wi-Max/etc. device.
+ Ingo Günther (our graphics artist) donated again a new icon skin which nicely
displays LAN traffic with the Net Talk feature.
+ Added "DivX" to the list of streaming agents for the layer-7 protocol
+ HTTP GET requests are now sent to the high queue regardless of the class of
+ The skins can now load images with GDI+, thus supporting the formats PNG,
TIFF, JPG and GIF. Images of dialogs are now in PNG format. The skins can
now use XRGB 32bit bitmap files, in addition to the ARGB format.
+ Added download option for more skins in the context menu.
+ Two more languages added: Ukrainian & Vietnamese. That makes a total of 28
languages supported. Even more languages are downloadable from our web site,
+ The count of connections displayed in skin windows now by default displays
the sum of TCP + UDP connections (formerly it was only TCP connections), but
can be switched to either only TCP, only UDP or both by clicking on the
+ Global variables (accessible through "spd gset") are now written to the
registry as well, so cFosSpeed can use them when booting.
+ Added l7-detection for Teredo (and Teredo bulk) IPv6 tunnelling. Thanks to
Zbig for inspiration.
+ Global variable checksum_ip may now be set to 2 as well, meaning that IP
checksum will only be checked on incoming packets.
+ cFosSpeed now uses link speeds as reported by Windows as upper limits.
! gset variable default_reg_id is now called reg_id_default.
x Pinging with UDP is now preferred over ICMP, if both work. UDP pinging is
more reliable. This should fix Traffic Shaping not working properly with
x "spd ports" now shows the correct port numbers. These port numbers can be
used to send spd commands directly to a certain port, like "spd 1 cstat".
Thanks to Jacques Zurbriggen for his help.
x Fixed a bug in filter rules: when a protocol or program is set to non-normal
priority by factory defaults and the user changed the priority to normal, it
would have no effect, i.e. the factory default priority would still be used
instead or the normal priority the user had set. Thanks to Peter Chamberlin
for his bug report.
x Fixed sending priority of pings. This should increase reliability of
x cFosSpeed caused delay before sleep or hibernate. Fixed.
x The program and protocols dialogs will now automatically save their settings
when you switch to another dialog page by clicking on menu on the left.
x Fixed slow Sleep/Hibernate problems.
x Fixed missing tracing for spd.exe and missing trace output under strange
conditions in speedsrv.dll.
x Fixed double dumping of settings to trace at the beginning of connection.
x When uninstalling (or doing an update install), Setup will wait for the
sdp.exe service to be deleted before going on. This should fix a problem
where after an update install the status window is gone. Thanks to
Richard B. for bug report.
x Switching the language did not change the language of the dialogs. Fixed.
x IPlist's were not loaded at program start, only with
"spd reload -iplist". Fixed. Thanks to bazolo for bug report.
x Fixed a bug that crashed some Vista & Windows 7 systems when uninstalling.
Thanks to Ingo Günther, Peter Fischer and others for dump files.
x Now handle_mss is 0 by default, i.e. TCP MSS is not changed by cFosSpeed.
This should fix problems with some strange web sites.
x Fixed a problem where the installer would sometimes not find old
- UDP checksum checking is now off by default.
- cFosSpeed queues now by default outgoing data for a maximum of 1 sec instead
of 3 secs. This forces TCP to adjust to line conditions faster. You can
change this settings by setting "spd gset max_queue_time -save", where
is measured in milliseconds.
- Executables are now flagged to support Data Execution Prevention (DEP) and
Address space layout randomization (ASLR), two security features of Windows
and are now flagged to support 3GB of user space memory.
- The reg_id = 1 (fixed) has been removed. Only 2 (cooperative) and 3 (not
Use incl. key to register