nanog mailing list archives

Re: Correctly dealing with bots and scrapers.


From: Andrew Kirch via NANOG <nanog () lists nanog org>
Date: Sat, 21 Mar 2026 12:08:20 -0400

Modern scrapers will eventually move on.  Generating a large amount of AI
hallucinations with a crappy LLM will do the maximum damage before it goes.


Andrew

On Sat, Mar 21, 2026 at 11:59 AM Suresh Ramasubramanian <ops.lists () gmail com>
wrote:

Ron Guilmette / rfg wrote this perl tool he called wpoison back in the 90s
that’d feed junk email addresses to spambots.

If a 90s Perl script can do this i seriously doubt we need an LLM of any
sort. Why waste all that compute just to give scrapers indigestion?

--srs
------------------------------
*From:* Andrew Kirch via NANOG <nanog () lists nanog org>
*Sent:* Saturday, March 21, 2026 9:23:00 PM
*To:* North American Network Operators Group <nanog () lists nanog org>
*Cc:* Andrew Kirch <trelane () trelane net>
*Subject:* Re: Correctly dealing with bots and scrapers.

Get a small version of a very old very fast very inaccurate LLM.  Have it
generate a couple terabytes of endless nonsense.

Redirect scrapers to it, and poison whatever LLM they are trying to train.

Andrew

On Wed, Jul 16, 2025 at 12:49 PM Andrew Latham via NANOG <
nanog () lists nanog org> wrote:

I just had an issue with a web-server where I had to block a /18 of a
large scraper. I have some topics I could use some input on.

1. What tools or setups have people found most successful for dealing
with bots/scrapers that do not respect robots.txt for example?

2. What tools for response rate limiting deal with bots/scrapers that
cycle over a large variety of IPs with the exact same user agent?

3.  Has anyone written or found a tool to concentrate IP addresses
into networks for IPTABLES or NFT? (60% of IPs for network X in list
so add network X and remove individual IP entries.)

--
- Andrew "lathama" Latham -
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