Comments on: IFTOP Guide: Display Network Interface Bandwidth Usage on Linux

By: afrodeity

afrodeity — Tue, 22 Jun 2010 21:14:56 +0000

I started iftop and see a lot of weird ip addresses and urls doing things. What is going on? Where are these services going? Is there a way to find out what is going on?

By: Marko

Marko — Tue, 30 Mar 2010 04:51:40 +0000

Hi,
Is there any possibility to use output of iftop and somehow feed it to webpage?

By: ndr

ndr — Thu, 04 Jun 2009 08:06:07 +0000

just apt-get install ncurses-devel and success now. but this morning try to run iftop and got error message like ‘cannot load shared library cap.., try another command like ‘ping’, ‘ll’ was give message unknown command..and try to restart and my server give message kernel panic

If we found the kernel panic what we can do..just reinstall the sistem or what..
thanks for your reply.

By: Ramesh Natarajan

Ramesh Natarajan — Thu, 04 Jun 2009 06:39:08 +0000

@Fleix,
Yeah. long host-names can cause some display problem. Have you tried to maximize the PuTTY/SSH-client screen and see whether that made any difference?

Also, I’ll try to cover the missing information on the iftop that you’ve mentioned in a separate article or FAQ later. Thanks for pointing that out.

@Ndr,
What kind of issues are you facing while installing ncurses and ncurses-devel? Can you please post the error message you are getting?

By: ndr

ndr — Wed, 03 Jun 2009 08:16:13 +0000

i am using Clarkconnect 4.3 enterprise edition have problem to install iftop. I cannot install/update ncurses and ncurses-devel. any idea how to update/install this

By: Felix

Felix — Sun, 22 Feb 2009 22:32:48 +0000

Thank you for this introduction to iftop. Unfortunately, there are several options that are listed in help screen that I can’t find any description; and you don’t cover them either. Namely, f – edit filter code and l – set screen filter in the end, I figured `l’ option).

Also, I’ve been trying to figure out if it’s possible to wrap the names of source hosts. Especially, when each connection takes two lines, it is unfortunate that long host names are truncated and the second line is wasted

d54C165C0.access.telenet. => win2008.lan 0b 105b 26b
<= 0b 244b 61b

Last, it would be nice to list iftoprc names – they are not too obvious.

By: Ramesh

Ramesh — Sat, 03 Jan 2009 02:34:07 +0000

@Wombat,

iftop needs root access. Probably you can use sudo from your account to execute iftop.

@Ajith,

it’s time for you to get back to Linux. . Find an old laptop/PC and install Ubuntu on it to get it started. For you it should be very easy as you’ve used Unix earlier.

By: Ajith Edassery | DollarShower

Ajith Edassery | DollarShower — Tue, 30 Dec 2008 02:32:38 +0000

Reminds me of my first software job (1995) where we had to write a little tool on a Sun SPARC (I guess) using TCL/TK to monitor network traffic, resource utilization on the hubs. After that I never touched Unix for almost 13 years.

(I get scared looking at the screen dump but I know that it’s a monster underneath that)

By: Wombat

Wombat — Mon, 29 Dec 2008 19:53:10 +0000

Hi, thanks for post! i’ve installed it -> but as U mentioned above – i have to be root.

Advice me how to use this tool without root correctly . thanks