Tip of the Trade: Check out the traffic passing through your machine with this useful and easy-to-use ncurses-based app. Run iptraf from the command line to configure it through the curses interface. Alex van den Bogaerdt’s RRDtool tutorial is a good place to learn more, too. iftop and iptraf command in linux with examples, for analysing and monitoring network traffic and bandwidth.

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You can always find the process using a port with the help of lsof command in Linux as shown below.

Linux iptraf and iftop: Monitor,Analyse Network Traffic and Bandwidth

We are committed to keeping our content free and independent, which means no paywalls, no sponsored posts, no annoying ad formats or subscription fees. Information about TCP packets are displayed here. But the fact that the tool still works as well as it did when it was in active development say a lot about how well this tool was made.

It’s also owned by root and has fairly tutorisl permissions so I chmod’d the directory tothe log files to and chown’d them both to root. In addition to that, it also determines the encapsulated protocol within the IP packet, and displays some important information about that as well.

One major fact to note in the output is that, it will show you the traffic from the first network interface card. Figure 3 Watch the action see Figure 3 occur in real time. Another such tool with a more interactive interface for process monitoring is ” top “.


Note if you’re going to do-it-yourself, rrd has a couple of convenient perl bindings you can use. Some futorial the products that appear on this site are from companies from which QuinStreet receives compensation.

Monitor your network with iptraf

iltraf Very good explanation of the tool. In much the same way, packets coming in from the external network will look like they’re destined for the external interface’s IP address, and again as destined for the final host on the internal network.

IPTraf Detailed interface statistics. The tools discussed in this post presents various important pieces of information about the traffic send and received by the network interfaces in Linux,which can be very useful in finding bottlenecks in network bandwidth. This new screen see Figure 2 tuorial you to enter rules for both source and destination.

The next screen you will see is the options window.

The default log file names will also be used if the -B parameter is used to run IPTraf in the background. It tutogial requires a terminal window.

There are number of monitoring tools available. So open up Synaptic or gnome-packagekit, or whatever tool you prefer to install with and follow these steps:.

That means, if a packet was fragmented into four pieces, and these four fragments pass over your interface, the packet counts will indicate four separate packets. Kenzolly said on May 20, at 4: Also, iptraf’s logfile should be rotated regularly I do it daily so that the file does not get too tutoiral.


But sometimes looking at straight network traffic isn’t enough — sometimes you need to profile the traffic more precisely to figure out what’s happening. This compensation may impact how and where products appear on this site including, for example, the order in which they appear. Note if you’re using apache you’ll probably need to add the line AddHandler cgi-script.

IPTraf General interface statistics. Otherwise you can download the source package tar file from iftop website. Search for “iptraf” no quotes. Comments Crodol said on March 23, at 6: Using iptraf requires root or sudo privileges. Note Be aware that the filter process the rules in order.

tuotrial The max rate is set to But if you exclude a particular set of data, that data won’t be shown; nor will any other data. But being old doesn’t mean it isn’t useful.