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Modify 500 Server Error page

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  • Modify 500 Server Error page

    Is it possible to modify the server error page?

    I need to remove the identifying information from it.

    right now, it shows the error message, but at the bottom of the page, it says:


    "Alpha Anywhere Application Server Application Server/12.0 Build/4119-4825 at KALE Port 443"


    I want to keep the rest of the page the same so I can see the error message, but I don't want that part at the bottom. When this message comes up as a result of a security scan, the suggestion is that you not reveal any identifying information about the server - and this clearly shows the type and version of the server.

    I know I can replace the page completely with one of my own, but I don't want to lose the actual error message in the process.

    Is that doable?

  • #2
    Re: Modify 500 Server Error page

    That is definitely a good 1st step but just keep in mind that if you really want to hide the server information you'll need to do the same with the configuration for all HTTP statuses. Also keep in mind that most servers usually give out information in HTTP headers also (even for the "normal" 200 status).
    Then you might need to also disable anything other than allowing for the HTTP GET, POST, PUT methods. You probably don't need to allow anyone to use the other methods such as HEAD, TRACE, etc...
    If you allow the web clients to see that you are delivering a5w or any other Alpha type specific resources, it doesn't take anyone very long to google those types and know that you are using Alpha Anywhere.
    In any case, if you are serious about security, you would probably want to first use the app server for IIS version and then install a WAF (a special web application firewall) in front of your applications. Anything less than that minimum level security isn't going to stop anyone from getting information about your server.
    I am not trying to be discouraging but it takes quite a bit of time and money to really protect your servers. However, any amateur can easily use a number of tools (examples: http://browserspy.dk or builtwith.com) to get information without having provoke HTTP 500 statuses.

    EDIT: other than that..... Here is a place to start: https://www.alphasoftware.com/docume...d%20Errors.xml
    Last edited by jgrannis; 06-05-2017, 03:22 PM.

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