Network Monitoring

[Matthew Carpenter]

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Another cool realtime stats tool is "iftop"
It's probably available on your distro CD/DVD.

Text-mode realtime "graphical" representation of your biggest (or only)
talkers.

Bill Campbell wrote:
| On Fri, Feb 18, 2005, David Bandel wrote:
|
|>On Thu, 17 Feb 2005 21:20:17 -0600, Ben Duncan <bns at meta3.net> wrote:
|>
|>>Anyone know of a good network monitor tool (for Linux)?
|>>
|>>One of my customers has a T1, and for some reason, something is eating up
|>>bandwidth. A test on one of those "test my bandwidth" sites shows I
am only
|>>getting about 18K thru.
|>>
|>>I cannot convince the Windows Admin that she has something wrong or
there is
|>>something going on. Her answer "Well, I'll just reboot the PDC and
servers" ...
|>>
|>>I would like to be the hero and isolate what (or who) is eating up
the bandwidth ...
|>>
|>>Thanks ...
|>>
|>
|>Ben, I just use: tcpdump -ni eth#
|>on the system (assuming they're using a Linux router/firewall).
|
|
| If you want to monitor something specific (e.g. IMAP converation between a
| client and a server), the tcpflow program is great.  It creates files in
| the current directory for each side of the connection, and they're
| generally comprehensible by mortals.
|
| Bill
| --
| INTERNET:   bill at Celestial.COM  Bill Campbell; Celestial Systems, Inc.
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236-1676
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|
|
|

- --
Matthew Carpenter
matt at eisgr.com                          http://www.eisgr.com/

Enterprise Information Systems
* Network Server Appliances
* Security Consulting, Incident Handling & Forensics
* Network Consulting, Integration & Support
* Web Integration and E-Business
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