Bandwidth Monitoring on a Linux System
On a Linux system, if you need information on how much bandwidth is being used
and what type of traffic is consuming the bandwidth, two tools you can use
that don't require a Graphical User Interface (GUI) are
IPTraf and
Linux Bandwidth Monitor (bwmon).
IPTraf description from Red Hat's IPTraf package:
IPTraf is a console-based network monitoring utility. IPTraf gathers
data like TCP connection packet and byte counts, interface statistics
and activity indicators, TCP/UDP traffic breakdowns, and LAN station
packet and byte counts. IPTraf features include an IP traffic monitor
which shows TCP flag information, packet and byte counts, ICMP
details, OSPF packet types, and oversized IP packet warnings;
interface statistics showing IP, TCP, UDP, ICMP, non-IP and other IP
packet counts, IP checksum errors, interface activity and packet size
counts; a TCP and UDP service monitor showing counts of incoming and
outgoing packets for common TCP and UDP application ports, a LAN
statistics module that discovers active hosts and displays statistics
about their activity; TCP, UDP and other protocol display filters so
you can view just the traffic you want; logging; support for Ethernet,
FDDI, ISDN, SLIP, PPP, and loopback interfaces; and utilization of the
built-in raw socket interface of the Linux kernel, so it can be used
on a wide variety of supported network cards.
A ZDNet article,
Police your network traffic with IPTraf explains how to use IPTraf to
log and monitor IP traffic on your system.
You can download IPTraf from the developer's
website or you may already have it with your distribution of Linux. An
RPM is available from
Red Hat or from
this site.
The options when running bwmon are shown below:
Linux Network Bandwidth Monitor $Revision: 1.3 $
by Kimmo Nupponen (kimmoon@users.sourceforge.net)
$Date: 2002/05/08 06:33:09 $
usage: bwmon [-b] [-h] [-a] [-m] [-u seconds]
-a Print bandwidth utiliasation in Kbytes rather than Kbits. The default
is to use Kbits
-a Print also average bandwidth since last boot per interface
-m Print maximum bandwidth since launch of this utility
-h Print this help message
-u Update timeout (integer value)
Use to refresh the screen before update timeout expires
Use 'q' or 'Q' to exit this utility
Note that you have to have proc mounted to allow this software
to work!
bwmon Screenshot
IPTraf
Screenshots
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Feature Comparison Between Adobe Acrobat 6.0 Standard and Professional
A chart is available at
http://www.adobe.com.au/events/roadshows/pdfs/FeatureComparision.pdf
comparing the features found in Adobe Acrobat 6.0 Standard and Professional
versions. The chart also covers Adobe Reader 6.0 and Acrobat Elements 6.0.
[/os/windows/software/pdf]
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