[Emerging-Sigs] SIG: ET SCAN Mascan User Agent Detected
wkitty42 at windstream.net
Fri Sep 12 10:18:39 EDT 2014
On 9/12/2014 4:25 AM, Kevin Ross wrote:
> Saw this in real use. Might still be tied to research project though.Other
> interesting characteristic is lack of Host header.
the HOST header field was not a required field until HTTP/1.1... it was optional
in HTTP/1.0 (RFC-1945) and non-existent in HTTP/0.9...
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