Tom's got a cron job looking for excessive usage on our www.delphion.site.

It's called by the following root crontab entry on dephds043,

#script that sends an email if more than REQUESTS_PER_HOUR_MAX requests for /details are made in the previous hour.
20,40,55 * * * * /dfs/ipntools/findcrawlers.pl > /dev/null 2>&1


It's somewhat interesting that /dfs/ipntools/findcrawlers.pl isn't called by each web
server.  I guess Tom figures the load is evenly distributed and if it's high on one
web server, it'll be just as high on all the others.

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The script maintains a list of I.P. addresses to deny access to, kept at
   /dfs/.rw/ipnlistings/preferences/deny_list.txt

You can edit this manually to add or remove I.P. addresses.  If you do, please keep
a history of your actions in the rolloff.deny_list.log file.