Re: [htdig] Someone's forging email addresses of htdig members

Subject: Re: [htdig] Someone's forging email addresses of htdig members
From: David Sexton (
Date: Wed Nov 17 1999 - 07:58:25 PST

Sorry Geoff, I thought I'd sent this to the list earlier and was about
to tell you the list wasn't working when I realised where I'd actually
sent it - oops!

Geoff Hutchison wrote:
> On Tue, 16 Nov 1999, Frank Martini wrote:
> Ah. So the idea of poison is that you have a CGI that generates an
> infinite tree of fake HTML pages with fake mailing addresses. Spambots
> fall-in, get lost, and end up with a large list of bogus addresses.
> As for how ht://Dig and other robots would handle this, you could easily
> post META robot headers and/or robots.txt restrictions keeping
> well-behaved robots out.
> I'm not sure how well it works--I've never tried it. But I'm looking for
> possible solutions.

        Wouldn't that mean that the 'poisoned' host's webserver will,
take an unprecedented 'battering' - at worst, this could turn into a
self inflicted DOS attack.
        Another possibility (completely off the top of my head):
        Do a reverse DNS lookup on the spider's origin, guess at ta
webserver name on it's own site and send it back there! (i.e. if the
spider came from, generate a page with (a) loads of
' addresses and (b) a link to '').

        This thread is getting interesting .. and dangerously off-tpic


David Sexton

Network Technician Sapphire Technologies Ltd. Tel: +44 (0) 1642 702100 Fax: +44 (0) 1642 702119

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