Hi all, I recently moved a web server in my domain to OpenBSD 3.7. Out of curiosity I looked it up at netcraft. While they correctly identified the web server software, the OS was listed as "unkown".
Not that I really care about this, but I'm curious as to what prevented them from fingerprinting the OS. I notice that some sites are being recognised as running OpenBSD, hence it can't be altogether impossible. I wonder whether my firewall, which was also changed to OpenBSD/pf recently, is interfering. I'm using "scrub in all" as well as "synproxy state" on the inbound pass rules. Could that be defeating netcraft's fingerprinting attempts? Cheers Steffen.
