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Old 21st August 2009
White White is offline
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Hi every one.
I have scanned my server with nmap.
It found what OS I am running, how can I block it ?
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Old 21st August 2009
BSDfan666 BSDfan666 is offline
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OS fingerprinting takes advantage of inconsistencies between implementations of TCP/IP, you can read more about it here.

Hiding or otherwise obscuring how packets are constructed in OpenBSD would be very pointless, security through obscurity is no security at all.

Instead of trying to hide the fact that you use OpenBSD, be proud of it.
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Old 21st August 2009
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and if hiding what type of OS your machine is running is THAT important, just unplug it from the network!
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Thou shalt check the array bounds of all strings (indeed, all arrays), for surely where thou typest ``foo'' someone someday shall type ``supercalifragilisticexpialidocious''.
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