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Re: [vulture@aoi.dyndns.org: Bug#100744: Binary should be in /usr/bin, since it's useful to non-admins.]



On Mon, 18 Jun 2001, Vince Mulhollon wrote:

> On 06/17/2001 08:41:56 AM Manfred Wassmann wrote:
> 
> >> On Fri, 15 Jun 2001, Josselin Mouette wrote:
> >>
> >> > Comme Manfred Wassmann disait l'ôt' jour :
> >> > >
> >> > > Network load. Keeping users from running expensive traceroute probes
> when
> >> > > a simple ping would suffice.
> >> >
> >> > The current place in /usr/sbin doesn't prevent users to use
> traceroute.
> >> > If you want this, you'd better remove the execution permissions.
> >>
> >> Sorry, but you didn't get the point.  As I said I do _not_ want to
> prevent
> >> people from using traceroute.  But I think it is an issue to prevent
> >> casual use of a rather expensive network analyzing tool, which the
> >> current setup does.
> 
> It's not "a rather expensive network analyzing tool".
> 
> Please quantify the costs of a traceroute compared to net connectivity,
> electrical power, and labor.

It is rather expensive compared to a ping probe when you only want to
test if a host is reachable.  By default traceroute uses three probes per
hop with a data length of 38B for the request (not 40B as is stated in the
manpage) and 66B for the response.  With an average distance between 10
and 20 hops a single traceoute probe generates an average traffic of about
5k.  A three packet ping would only need 444B.

If you have 10 users makeing 10 probes a day on 20 working days a month
the traceroute probes sum up to about 10 Megs of data.

-- 
Manfred Wassmann
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