I'm trying to evaluate benefits of using ModSecurity in our system. From that what I read till now, I have feeling it is not very useful for us. In our web app, there is single entry point, which is encrypted websocket connection. That design might make all content based rules bit useless.

With that setup, is it worth to have ModSecurity as precaution?

  • Could you clarify if you're asking about WAFs in general or ModSecurity in particular? The title sounds a little different than the question body.
    – Arminius
    Apr 23, 2017 at 21:34
  • @Arminius I changed topic, I wonder in general, but as i'm looking only at modsecurity, it makes sense to ask about mod particular application. Other thing, just out of curiosity, is it big difference between different WAFs?
    – user902383
    Apr 23, 2017 at 21:40
  • 1
    I'm not too familiar with different WAFs but there's quite a bit to research.
    – Arminius
    Apr 23, 2017 at 21:48
  • 1
    I think the quesiton is currently a bit to broad to work on this site. I will try to edit it to make it more narrow. If you dislike my edits, you are free to revert them.
    – Anders
    Apr 24, 2017 at 13:40

1 Answer 1


As of 2017, ModSecurity does not support and does not plan to support WebSockets, as stated by Spiderlabs development team:

Currently ModSecurity is not capable to inspect WebSockets. It is only capable to understand the http requests.

So, not only it will not be helpful, but it may even have unexpected side effects making your application unreliable.

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