On Fri, Jun 21, 2024 at 10:46:02AM +0000, L. Mark Stone via mailop wrote:
> We use "route" as the banaction in our Fail2Ban.

If iptables or other filtering performance is a concern, I would definitely
support the suggestion to use blackhole routes instead.

Searching on obvious keywords dug out this tiny tutorial for Linux:

https://lowendbox.com/blog/linux-blackhole-tutorial-adding-and-removing-a-null-route/

and for addresses to feed to those commands in suitable scriptery any
subscriber here is of course welcome to the lists we generate here,
described in eg https://www.nxdomain.no/~peter/badness_enumerated_by_robots.html
or if G's trackers are not any concern and you want prettier formatting
https://bsdly.blogspot.com/2018/08/badness-enumerated-by-robots.html

All the best,
Peter

-- 
Peter N. M. Hansteen, member of the first RFC 1149 implementation team
https://bsdly.blogspot.com/ https://www.bsdly.net/ https://www.nuug.no/
"Remember to set the evil bit on all malicious network traffic"
delilah spamd[29949]: 85.152.224.147: disconnected after 42673 seconds.
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