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MSZ
Nimbostratus
NimbostratusUser Agent: Linux and Request Method: HEAD
HEAD /URI-TESTING HTTP/1.1
Host: applicationtesting.abc.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20150101 Firefox/47.0 (Chrome)
Accept: text/html,application/xhtml+xml,applicati...
GielNimbostratus
NimbostratusIllegal HTTP status in response means the server sent a HTTP status code (in this case, 501) not allowed by your ASM policy. If this is a valid response in your application, you can add this code to the allowed response status code list under Security -> Application Security -> [your policy name] -> Advanced -> Allowed Response Status Codes.
