Re: bean counters
On Sat, 11 Mar 100, Allen Ahoffman wrote:
> Is there anyone outthere selling a Debian based box that will:
> allow complete real time ip stats for several inside hosts.
> e.g.
> one linux box where all the data goes thru and it presents me with
> incoming and outgoing traffic use by bytes for each ip?
> I don't want it to filter packets, reroute packets, or anything, just
> count everything.
take a look at ``ipmeter'' (freshmeat appindex is the place), can do
anything you just described... however, readme says:
Things to consider when installing IPmeter on Linux machines:
The Linux kernel design does not encourage packet capture -
its ressource consumption when capturing is extremely high, and
packet losses at that level are silent.
This means, Linux distributions built on top of a standard kernel
can not reliably capture packets at the rate required for heavy duty
RTFM in a professional setting. It probably will be good enough
for SOHO use on a ISDN dialup line, or for capturing a subset of
packets, but when monitoring all traffic on a commercial grade
line, you will likely lose a substantial amount of traffic without
ever seeing any alerts!
We experienced significant data losses in heavily used 2Mbit
networks, and cannot recommend stock Linux as a RTFM platform.
See:
http://www.nfr.net/nfr/mail-archive/nfr-users/1999/Feb/0110.html
for a discussion of details.
To summarize: Linux machines will do fine as a database and
application server in distributed IPmeter environments, and ought
to be up to small home (POTS/modem or ISDN connected) networks,
but for any commercial grade leased line, you should seriously
consider running the RTFM side of IPmeter on FreeBSD or a com-
mercial Unix.
well this does not indicate kernel versions or any more specific
info.. go figure, but he is likely to be right.
--
[-]
kazmer at any cost !
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