Hello,
thanx for all the responses, but those tools arent exactly what I'm looking for (and maybe I need to practice english a bit more as well :) ).
example :
computers----router----proxy---gateway---internet
computer1 192.168.1.10 computer2 192.168.1.11 computer3 192.168.1.12
at the router I would like to see that at that moment how much bandwithd is being used.
for example I would like to see something like this (example) :
computer1 download 10kbyte/s upload 1.5kbyte/s computer2 download 0kbyte/s upload 0kbyte/s computer3 download 20kbyte/s upload 2kbyte/s
my problem is (I currently use cacti, and bigsister), that I cannot see how is my bandwidthd currenly used on a per host basis.
I can see graphs about that my current download and upload is this and that (overall), but I would like to see something as shown
above in the example, I wonder if there is some tool for that ?
Sincerely Robert Becskei
----- Original Message ----- From: "Glaucius Djalma Pereira Junior" <glaucius@xxxxxxxxx>
To: "Taylor, Grant" <gtaylor@xxxxxxxxxxxxxxxxx>
Cc: <netfilter@xxxxxxxxxxxxxxxxxxx>
Sent: Thursday, May 05, 2005 19:21
Subject: Re: Iptables, php , realtime bandwidth usage
use it
http://ifmonitor.preteritoimperfeito.com/
On 5/5/05, Taylor, Grant <gtaylor@xxxxxxxxxxxxxxxxx> wrote:
> I wonder if someone could help me find something similiar to this :
>
> -can monitor bandwidthd usage in real time (php maybe...)
>
> -if possible it could resolve ip address to dns name ? ( I have setup > my own dynamicdns dhcp server combo )
You may want to look in to some of the SNMP monitoring tools (two come to mind MRTG and Cacti) as they will do a lot of the graphics and graphical web access for you. However to do this you will either need a manged + SNMP capable switch to watch which port each computer is plugged in to or you will need to set up some sort of rules for counting on your router / firewall and then set up some sort of SNMP package on the router / firewall to point your SNMP monitoring app at.
As far as getting close to real time stats you could set up some iptables rules to easily count what passes through the router in each direction for each client. You may want to look at the accounting matches as they are designed explicitly for this or just basic packet matching rules will work too. One word to the wise (unless there is a way to defeat this) the bytes and packet counters on iptables output will start rounding at some point, I'm not sure where, so you may want to pass the -Z option to zero out the counters periodically (each polling cycle) to make sure that you get all packets and not loose them to rounding.
Grant. . . .
-- Glaucius Djalma Pereira Junior glaucius@xxxxxxxxx
