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How to use MRTG to monitor an application's bandwidth use?



It runs on a linux/*nix box and watches your network traffic.  By
default I install it on my firewalls(linux).  If you put it on anything
other than your firewall, you need to set it up as a sniffer.  Setup 2
NICs, have the 2nd NIC setup as a port monitor to your firewall port on
the Cisco.

Matthew Shields
Sr Systems Administrator
NameMedia, Inc.
(P) 781-839-2828
mshields at namemedia.com
http://www.namemedia.com
 

-----Original Message-----
From: John Abreau [mailto:john.abreau at zuken.com] 
Sent: Tuesday, August 29, 2006 5:33 PM
To: Matt Shields
Cc: discuss at blu.org
Subject: Re: How to use MRTG to monitor an application's bandwidth use?


Matt Shields wrote:

> Ok, someone may need to correct me, but your Application and the
Network
> operate at different levels in the protocol stack.  So mrtg alone is
> impossible.  When you poll your router it is only going to report what
> data is passed alone its interfaces.  You could setup something like
> NTOP to monitor your firewall for connections, then look at the
> summarized traffic report and see what it says for the destination
> everyone is connecting to.
> 

Ntop? I'll take a look at that. I've got a Cisco PIX firewall; ntop runs
on a separate machine and can pull statistics off the PIX, right?


-- 
John Abreau
IT Manager
Zuken USA
238 Littleton Rd., Suite 100
Westford, MA 01886
T: 978-392-1777            F: 978-692-4725
M: 978-764-8934
E: John.Abreau at zuken.com  W: www.zuken.com

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