#sysadmin #php #wordpress #cloudflare #ASNs #Security #defensive #notes #blueteam https://blog.odicforcesounds.com/twoDaysAfter.html

📢 Perplexity contourne les restrictions de crawl des sites web
📝 L’article publié par la société Cloudflare explique que les robots du service d’intelligence artificielle **Perplexity** utilisent des méthodes po...
📖 cyberveille : https://cyberveille.ch/posts/2025-08-05-perplexity-contourne-les-restrictions-de-crawl-des-sites-web/
🌐 source : https://blog.cloudflare.com/perplexity-is-using-stealth-undeclared-crawlers-to-evade-website-no-crawl-directives/
#ASNs #IP #Cyberveille

@landley @jschauma @ryanc @0xabad1dea yeah, the exhaustion problem would've been shoved back with a #64bit or sufficiently delayed by a 40bit number.

Unless we also hate #NAT and expect every device to have a unique static #IP (which is a #privacy nightmare at best that "#PrivacyExtensions" barely fixed.)

• I mean they could've also gone the #DECnet approach and use the #EUI48 / #MAC-Address (or #EUI64) as static addressing system, but that would've made #vendors and not #ISPs the powerful forces of allocation. (Similar to how technically the #ICCID dictates #GSM / #4G / #5G access and not the #IMEI unless places like Australia ban imported devices.

I guess using a #128bit address space was inspired by #ZFS doing the same before, as the folks who designed both wanted to design a solution that clearly will outlive them (way harder than COBOL has outlived Grace Hopper)...

• Personally I've only had headaches with #IPv6 because not only do I only have #IPv4only #Internet but my #ISP refuses to allocate even a singe /64 to me (but has no problem throwing in a free /29 of #IPv4's in with my contract!)and stuff like #HurricaneElectric / #HEnet's #Tunnelbroker fail face first due to #Geoblocking and the fact that #ASNs get geolocated, not their #PoPs...

If I was @BNetzA I would've mandated #DualStack and banned #CGNAT (or at least the use of CGNAT in #RFC1918 address spaces) as well as #DualStackLite!

#natation #AisanceAquatique #ASNS
Article sur la plan académique #clermontferrand après ceux sur la stratégie de développement dans l' #Allier et celui sur trouble du spectre autistique et natation.
Cela évolue. En espérant que cela puisse être inspirant !
#RevueEP&S

Today a /16 network (65536 IP addresses) is a VERY valuable asset worth around $3m💰! Here we have seven of them announced on the Internet by unallocated ASNs - it is almost unbelievable: 😱

144.74.0.0/16 AS25978 [rush.edu, US]
146.131.0.0/16 AS23448 [epcor.com, CA]
152.5.0.0/16 AS11540 [rti.org, US]
159.113.0.0/16 AS16860 [wipro.com, IN ... even the IPs are unallocated!]
162.121.0.0/16 AS19708 [stlukeshealth.org, US]
179.18.0.0/16 AS22698 [wom.co, CO]
197.12.0.0/16 AS37703 [atlax.com, TN]

Using unallocated ASNs is a common cybercriminals trick. To prevent network reputation degradation, @arin @Rush University Medical Center @epcor @RTI International @wipro @ST. Luke's Health System @WOM Colombia @Atlax Web Solutions @lacnic @afrinic we strongly recommend fixing this 🙏!

#ASNs #NetworkReputation #Cybercrime

It was a fantastic week in #SanServolo. The future of neuroscience lies with these young folks! #AdvancedSchoolOfNeuroscience #ASNS #IIT #IntegratedInformationTheory

Example of #Blocking #ASNs (https://en.wikipedia.org/wiki/Autonomous_system_(Internet)) with #opnsense:

Head to the #Firewall section

1. Create a new alias

Name: "ASN_Google_IPv4"
Type: "BGP ASN"
Content: The plain ASN number 15169 (#Google)
Give a description

2. Create a floating rule

Rule category: Floating
Action: Block
Interface: LAN/WAN
Direction: Any
TCP Version: IPv4
Protocol: any
Destination: ASN_Google_IPv4
Logging as desired

Lookup ASNs:
https://securitytrails.com/blog/asn-lookup

#opensource #asn #block #privacy #network #privacy

Are there any #freedomRespecting #whois servers/databases?

The https://whois.radb.net one is good but it seems to not feature #AsiaPacific ASNs for some strange reason.

In a global community, we need those too.

#whois #whoisFoss #whoisFreedom #freeToKnow #freeKnowledge #sciHub #whoisServer #whoisDatabase #ASNumbers #ASN #ASNs #RadB