Ban whole ASes

[shish]

Sometimes spammers are very persistent, and we need to ban an entire ISP at a time

There is a library to convert ASNs into sets of IP ranges: https://github.com/io-developer/php-whois?tab=readme-ov-file#how-to-get-summary-using-asn-number

Perhaps a box on the admin tools for "Ban ASN" -> it fetches the ranges, displays the list of ranges as a confirmation -> button to add all ranges to the IP ban list

Though if we're bulk-adding ranges, we might also want to be able to bulk-delete bans

[discomrade]

I wonder if this is best performed by the Shimmie software or by the web server (e.g. NGINX) or other security tools. (I don't know)