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File Name : FAQ

This is the beginning of a FAQ for IPTraf-ng.
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Q: Could you include support for <this-and-that> interface?

A: Please read the README.interfaces file for what is needed for a new
interface type to be supported.

Q: I try to start IPTraf-ng but it tells me that <facility> is already active
in another process.  But I'm sure IPTraf-ng isn't running at the time!

A: Probably due to a faulty installation or abnormal termination. If
you're sure you've installed the software properly, you may have stale
lock files from a previous abort.  Just issue the iptraf-ng command with the
-f parameter (iptraf-ng -f). This will override stale locks and IPTraf-ng
should proceed normally.

Q: I want to configure IPTraf-ng but it tells me only the first instance can
configure.

A: Similar to the previous question.  Issue the iptraf-ng command with the -f
parameter.

Q: Is there a way to make IPTraf-ng run in the background and collect
statistics to a log file?

A: Use the -B command-line parameter to force IPTraf-ng to dump all
its screen output into oblivion and move into the background.  See the
manual for details on background operation.

Q: I'm getting a "cannot allocate memory" error but I've got loads of
memory available.

A: The "cannot allocate memory" error is a reponse to the "segmentation
fault" condition (SIGSEGV).  If you're sure it's not a memory condition on
your machine, please report it to me, and if possible, include a gdb trace
or strace output to help me debug.

Q: Is there Web/HTTP/HTML/whatever version available?

A: I've received several requests for this one.  Perhaps in time, I've
been caught up in some work and some personal stuff.  Suggestions on
implementation of such a feature are welcome.  (Addition: I hope to get
this incorporated into the next major release.  Who knows?  If I have the
time, I might be able to WAP it in the near future :))

Q: It would be great if the statistics could be sorted.

A: Sorting is now available with the IP traffic monitor, TCP/UDP statistical
breakdown, and LAN station monitor.  Sorting is invoked by pressing the
S key and selecting a sort criterion.

Q: I want to run IPTraf-ng from a Secure Shell terminal but the output of the
program causes a heavy load on the network.  What should I do?

A: The output of the program is returned over the network, which in turn
tells IPTraf-ng about the new traffic, which IPTraf-ng then outputs, which is
then sent over the network... in other words, it's a feedback effect.  The
solution to this is to set the screen update interval to 1 second or more.
To do that, go to Configuration... then select Timers... then Screen
update interval... and enter the interval value in seconds. One second
should be fine.

Q: Does IPTraf-ng run on FreeBSD?

A: I wish it did.  IPTraf-ng was designed from the ground up to use the Linux
PF_PACKET mechanism, not libpcap.  The main reasons for doing this are
less overhead and more control over the captured packets.  Since Linux
kernel 2.2, the raw socket API featured more goodies, like the direction
of the packets.

I hope to be able to successfully port to FreeBSD, but I do not have the
resources to do so now.

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Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2025-05-21 04:06:42
..	dir	-	root/root	0755	2025-08-26 06:54:37
Documentation	dir	-	root/root	0755	2025-05-21 04:06:42
CHANGES	file	5.69 KB	root/root	0644	2024-11-21 08:02:17
FAQ	file	3.1 KB	root/root	0644	2024-11-21 08:02:17
LICENSE	file	17.57 KB	root/root	0644	2024-11-21 08:02:17
README	file	2.98 KB	root/root	0644	2024-11-21 08:02:17
README.contact	file	627 B	root/root	0644	2024-11-21 08:02:17
README.indent	file	464 B	root/root	0644	2024-11-21 08:02:17
README.interfaces	file	2.18 KB	root/root	0644	2024-11-21 08:02:17
README.resolving	file	1.9 KB	root/root	0644	2024-11-21 08:02:17