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Question: Years ago, back when I used to do networking, Cisco Wireless controllers used 1.1.1.1 internally. They seemed to literally blackhole any comms to that
by nu11ptr 1y ago
Question: Years ago, back when I used to do networking, Cisco Wireless controllers used 1.1.1.1 internally. They seemed to literally blackhole any comms to that IP in my testing. I assume they changed this when 1.0.0.0/8 started routing on the Internet?
- blurrybird 1y agoYeah part of the reason why APNIC granted Cloudflare access to those very lucrative IPs is to observe the misconfiguration volume. The theory is CF had the capacity to soak up the junk traffic without negatively impacting their network.
- yabones 1y agoThe general guidance for networking has been to only use IPs and domains that you actually control... But even 5-8 years ago, the last time I personally touched a cisco WLC box, it still had 1.1.1.1 hardcoded. Cisco loves to break their own rules...