Single Packet Authorization using fwknop
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Uploaded by securitygeneration on Nov 23, 2010
This video is a short demo of how Single Packet Authorization can be used to protect network services.
In this example fwknop is used.
http://www.securitygeneration.com/single-packet-authorization
http://www.cipherdyne.com/fwknop
Uploader Comments (securitygeneration)
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All Comments (2)
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Hi! Nice demo. My question is why on 1:15 nmap shows the port as filtered? If I am not mistaken at this stage (before the SPA) the port should be completely invisible.
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Hi mavroudisv,
Nmap automatically assumes the port is filtered if it doesn't receive a SYN-ACK or a RST. Using --reason you can tell nmap to explain why: in this case it says "no response". Essentially the port is completely invisible.
Hope this helps!
securitygeneration 7 months ago