There's numerous products on the market that do this - they're usually
bundled as "web site monitoring" - and alert when flooding occurs,
certain pages change, along with monitoring response times from several
sites on the net, and various other items.
Its also fairly easy to implement as a perl/tcl/python/shell/... script.
--Bruce
Bill Sconce wrote:
>
> Ray Cote wrote:
> >
> > At 4:42 AM -0700 5/23/01, Karl J. Runge wrote:
> > >Here's an idea for static content and for some types of dynamic...
> > >... possibly doing a diff with the "fresh" data beforehand and notifying some
>admin if there are differences
> >
> > Interesting idea. Practically, you could keep a duplicate copy of the site
>somewhere isolated behind your firewall and run an rsynch-type of product on it that
>reports (Emails/Pages/Loud Sirens in the night) when something changes.
> >
> > Ray
>
> Something like the way the FAA monitors localizer and glideslope transmitters
> for instrument approaches?
>
> There are real receivers placed out in the field, and listen to the transmitters
> just like aircraft receivers would. Of course, the test receivers, since they
> know where they are, also know what signal they should receive, and can raise
> an alarm when they receive something wrong.
>
> So a site prober could be located anywhere on the 'net, and send off alarms
> whenever it detects that your site is serving a web page that's not like what's
> expected.
>
> (But it does take effort. Isn't the essence of the recent thread about
> security in general simply that, for reason after reason, effort isn't
> made?)
>
> -Bill
>
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