From: joe henderson (joe.henderson1@insightbb.com)
Date: Fri Jan 19 2007 - 08:38:41 EST
You can get a *nix box and cron the script..
Perl is a good scripting language that I use and prefer for this type of
scanning..
To get ALL the machines on a subnet you get send a broadcast ping to the
network
and dump the arp tables off of the routers.. That will give you all the
hosts that are talking
we do that here for discovery on top of the method that you are using...
Joe
tom jones wrote:
> Hello,
> I am responsible for monitoring hundreds of machines
> over thousands of
> external IP addresses. I currently run nmap manually
> once a week and import
> the results into Excel to compare them with the
> previous week to find hosts
> that are new and also take note of those that have
> been taken off the
> Internet. I am looking for a web front end, batch
> process, or similar that
> would meet the following requirements.
>
> -Input file of external IP ranges I am responsible for
> -Have the tool scan all ranges to determine responding
> IPs
> -Compare results to previous week and note exceptions
> -Scheduling capability to have this take place weekly
>
> >From a quick search, I found these two tools that I
> might try out if I have
> time. I have not heard of them before and have not
> had a chance to read up
> on their capabilities:
>
> http://sourceforge.net/projects/gwmos/
> http://sourceforge.net/projects/cancerbero/
>
> I am also interested to hear thoughts on the best way
> to do host discovery.
> Many of our firewalls will block ICMP requests which
> is fast and not
> complete. Scanning for every TCP and UDP port can
> take days. I'm looking
> for a good middle ground that would be fairly complete
> but not take an
> excessive amount of time. I currently scan for about
> 15 common TCP ports
> which takes about half of a day.
>
> I have the ability to run these on either a Windows XP
> machine or a web
> server (php, etc.).
>
> Thanks in advance.
>
>
>
>
>
>
>
> ____________________________________________________________________________________
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>
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