Aug 192014
 


What’s your upload and download speed at home (or in your office) ?
Are you really sure that you get what do you pay for to your ISP ?

To test the speed of our internet connection There are several internet services such as SpeedTest a web service that is available both from Web browsers and mobile application.

Now you can easily check it also with speedtest_cli a command line interface for testing internet bandwidth using speedtest.net. In this way you can do the test also on servers that don’t have a Browser or a graphical interface. Continue reading »

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Jul 112013
 

On server it’s useful to monitor, and collect, data about the use of your bandwidth, in the past I’ve wrote an article about “Monitor your bandwidth from the Linux shell” and I’ve also presented 4 useful tools that you can use to have a real time monitoring of the bandwidth:

IPTState : This software is a top-like interface to your netfilter connection-tracking table. Using iptstate you interactively watch where traffic crossing your netfilter/iptables firewall is going, sort by various criteria, limit the view by various criteria. But it doesn’t stop there: as of version 2.2.0 you can even delete states from the table!

pktstat displays a real-time list of active connections seen on a network interface, and how much bandwidth is being used. Partially decodes HTTP and FTP protocols to show what filename is being transferred. X11 application names are also shown.

NetHogs is a small ‘net top’ tool. Instead of breaking the traffic down per protocol or per subnet, like most tools do, it groups bandwidth by process. NetHogs does not rely on a special kernel module to be loaded. If there’s suddenly a lot of network traffic, you can fire up NetHogs and immediately see which PID is causing this. This makes it easy to indentify programs that have gone wild and are suddenly taking up your bandwidth.

IPTraf is a console-based network statistics utility for Linux. It gathers a variety of figures such as TCP connection packet and byte counts, interface statistics and activity indicators, TCP/UDP traffic breakdowns, and LAN station packet and byte counts.

They are all good I suggest to read my old articles to have a small introduction about them, today I want to show you vnstat, this small program has something more than the others, it can show real time statistics, but the feature that this small program shines it’s its ability to collect data over a long period of time.
Continue reading »

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Mar 212013
 

The tool that usually I use to download from the command line is wget, it’s simple to use and it’s installed (or easily installable) on any system, but if you want something that can do the same job in a smarter and faster way you must really test Aria2

Aria2 is a lightweight multi-protocol & multi-source command-line download utility. It supports HTTP/HTTPS, FTP, BitTorrent and Metalink. aria2 can be manipulated via built-in JSON-RPC and XML-RPC interfaces, let’s see some practical use and examples.

Continue reading »

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Monitor your bandwidth from the Linux shell

Monitoring how much bandwidth is used is a fundamental task to check the status of your servers, or just your desktop, so i always test new tools to see if i find something good. This is the third article of this series and in this one i’ll take a look at Bmon, speedometer and Nload.

Manage your bandwidth with Trickle

Sometimes it’s useful to limit the bandwidth used by some of your programs, perhaps you want to limit your Browser or FTP client, and they dont’ have a native way to limit the input and/or output bandwidth they are using, there is a small application that can solve this problem for you: Trickle trickle is [...]