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Allow only PDF downloads

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  • Allow only PDF downloads

    Is there a way to use the IOS fiewall to allow only PDF files to be downloaded and block all others? If not, any suggextions on how to accomplish this?

    Many thanks in advance.

  • #2
    Re: Allow only PDF downloads

    Tough question without an easy solution.

    I don't think this can be done with the IOS firewall. However, you may be able to do it with NBAR. Here is an example of how NBAR was used to block a certain executable downloaded via HTTP. You may be able to only allow PDF but I haven't looked into it.

    I would probably swap toward other products, outside of a router such as Bluecoat, ISA, or Squid proxy using an ICAP server

    Also, on my Fortinet firewall, I can block certain extensions (like .exe). I just don't see where I can block everything and only allow PDF.

    Anyone else have any suggestions on how to do this?

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