voip

Fast ADSL without leaks

Stefanos Karagos | June 4, 2007

My latest discovery is a small program that is a really gem.
cFosSpeed, installs some new drivers in your PC giving you the ability to surf smooth even you are downloading in background tons of files ;-)
Using some "special" technics [like Traffic Shaping], cFosSpeed prioritize the data packets with a way that gives you full access to your broadband bandwidth.


cFos Traffic Shaping reduces delays during data transfer and allows you to surf the Internet up to three times faster. So you can use the full bandwidth of your connection!


During TCP/IP transfer, a certain amount of data needs to be confirmed upon reception before more can be sent. Stalling data confirmation results in delays and transfer-rate slowdowns, thus forcing the sender to wait. Especially for DSL and cable, it is possible to slow a download to a crawl by choking the upstream channel (which has the smaller bandwidth anyway) with an upload. This is because in such a scenario there is not enough upstream bandwidth left for data confirmation.


The standard solution so far has been to try and compensate for this by increasing TCP window size, thereby allowing more data to be sent without immediate confirmation. The main problem here is that this also leads to high ping times (latency) and significant delays during Webpage rendering. Latency of up to 2 seconds is not uncommon for TCP windows with a size of 64k. In short, huge window sizes just won´t let you achieve full download speed.


By contrast, cFos Traffic Shaping prioritizes data traffic in such a fashion that important packets zip past regular packets. This way, receipts always arrive in time, and uploads won't ever choke your broadband connection again!


cFos Traffic-Shaping technology recognizes a number of important packet types and prioritizes them not only to keep Internet traffic running smoothly but also to ensure particularly low ping times. This not only accelerates surfing and download speeds significantly, but it is also a decisive advantage for online gaming.


With cFos Traffic Shaping, you will notice measurable improvements and benefits like:
* Full download rate during upload
* Consistently quick response time while surfing the Web or running other applications
* Improved VoIP speech quality


Without Traffic Shaping, ping times can easily reach a horrific 2 seconds, which will make participating in Telnet or SSH sessions a chore – if not outright impossible. But with cFos Traffic Shaping, latency remains normal.


This alone should make for a totally new surfing experience!


It also means that while surfing the Web, you will be hard-pressed to even notice that there are any data transfers running in the background. Again, such drastically reduced latency will come in especially handy for online gaming.


First, cFos Traffic Shaping measures upstream and downstream rates as well as ping delays for each Internet connection. It then uses this information to control the scheduling of all Internet data transfer. In addition, Traffic Shaping does assign the available bandwidth dynamically to each individual connection as needed.


Not only does cFos Traffic Shaping prioritize ACKs, but also other important packets like those used for Telnet and SSH. Thus, with cFos Traffic Shaping, filesharing programs or mail uploads choking your connection will finally be a thing of the past!


Besides prioritizing ACK packets, Traffic Shaping performs or lets you perform the following:
RX Shaping
ensures ping times remain low even during downloads, while keeping one download from choking other simultaneous downloads.
ACK-Filter
optimizes TCP/IP acknowledgements, thus making more bandwidth available in the upstream channel.
Prioritizing individual programs
like games while assigning lower priority to others is especially useful when trying to reserve some extra bandwidth for important applications.
Voice over IP (VoiP) speech quality
is improved by recognition and prioritization of RTP packets.
Prioritizing other protocols through layer-7 analysis,
like HTTP, FTP, POP3, SMTP, ICMP, SSH, Telnet, and DNS can be done using built-in, programmable filtering rules.


Test it on your own!
I'm sure that you will see the benefit from the first second ;-)

Weekend goodies #001

Stefanos Karagos | November 25, 2006

[1]

Collaboroom, as its name implies, is a room for collaboration between individuals and team members.

Collaboroom provides an instant shared whiteboard on the computers of you and your friends/colleagues/customer within any browser that supports the free Flash Player Plugin.
There is no software to install, you just need a web browser with the latest Flash Player (a free plugin that comes standard with your browser).

With a webcam and headset, you can instantly begin audio and video conferencing for face-to-face communication!
There are several versions of Collaboroom that provide a range of feature sets. There are also modules for scheduling meetings and other tasks. Collaboroom can also be customised to meet your unique requirements.
Check it out!

[2]

I want a Freeware Utility to 450+ common problems solved.
Extremely useful free utilities that do specific jobs really well and save time and money.
From Audio/Video till Internet and Financial utilities...

[3]

Comodo's free Firewall product offers a richer feature set and better protection than paid-for versions from the likes of Mcaffee or Zonealarm.

Suitable for both home users and businesses alike, the firewall features both inbound and outbound packet filtering in combination with robust outbound application filtering at the network layer. The new-look interface facilitates quick and easy access to all major settings, including the powerful and highly configurable security rules interface.

In point of fact, Comodo Firewall is one of the most impenetrable personal firewalls on the market.

[4]

VoipDiscount, can help you to make free calls over the internet to any of your online friends, as well as various popular destinations. Till now they offer free calls to more than 35 countries!
Start calling before they stop the free service as the Voip Burst have done it before ;-)

Have a nice weekend!