Which type of attack is being performed?

An external host is attacking your network. The host sends an HTTP request to a Web server, but
does not include the version of HTTP in the request.
Which type of attack is being performed?

An external host is attacking your network. The host sends an HTTP request to a Web server, but
does not include the version of HTTP in the request.
Which type of attack is being performed?

A.
signature-based attack

B.
application identification

C.
anomaly

D.
fingerprinting

Explanation:

Reference;https://services.netscreen.com/restricted/sigupdates/nsmupdates/HTML/HTTP%3AINVALID%3AMSNG-HTTP-VER.html

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juniper

juniper

C Right answer : see : http://signatures.juniper.net/documentation/signatures/HTTP%3AINVALID%3AMSNG-HTTP-VER.html

HTTP: Missing HTTP Version

This protocol anomaly triggers when it detects an HTTP request with an invalid HTTP version string in the HTTP version string position of a Web request. This can indicate an invalid request (such as invalid white-space within a URI) or potential malicious activity (such as shell activity).

References
URL: http://www.faqs.org/rfcs/rfc2616.html
URL: http://www.ietf.org/rfc/rfc2396.txt

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