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Dianna_129659's avatar
Dianna_129659
Icon for Nimbostratus rankNimbostratus
May 02, 2014

F5 Blocking = Illegal Method: OPTIONS

F5 is set to learn and alarm. The Attack Type is Information Leakage. The Request Details indicates Illegal method for HTTP Method OPTIONS. The HTTP Request = OPTIONS / HTTP/1.1 I am trying to determine if I should set this to BLOCK, but I do not really understand what the request is. Can you help me to understand, please?

 

4 Replies

  • Richard__Harlan's avatar
    Richard__Harlan
    Historic F5 Account

    When a systems send a Option command it is asking the server what methods do you support/allow. The server will respond with methods like GET/POST/HEAD and such.

     

    • MSZ's avatar
      MSZ
      Icon for Nimbostratus rankNimbostratus

      Which method we can use ACT as Method instead of OPTION method? Please

       

  • Options is a HTTP Method, used by a client to obtain from the server which other Methods are supported.

     

    If you need a primer on HTTP I'd suggest you go to http://university.f5.com/ and take the HTTP Basics I and HTTP Basics II courses.