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This question already has an answer here:

More precisely, I want to run PDFLatex on a server and let it accept arbitrary .tex source files from users, returning the compiled pdf to them. However, obviously this introduces a security threat (most importantly in terms of write access to the server's file system).

I have read this very similar question where the answers hint at performing some changes to texmf.cnf: How can I safely compile other people's LaTeX documents?

But first of all, I am using Miktex (2.9), and it doesn't seem to use a texmf.cnf config file. Where would I perform the described changes in Miktex?

And second of all, I am running a Windows server. Is there anything special to consider in this case?

I am aware that this is a quite open-ended question, and I'm not looking for a definitive answer. I'd just like to avoid the most obvoious risks. So any "creative" ideas (from a hacker's point of view) will be appreciated!

marked as duplicate by Alan Munn, Svend Tveskæg, Gonzalo Medina, barbara beeton, darthbith Sep 1 '15 at 17:30

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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    Don't enable \write18 macros... or \pdfshellescape, etc. In MikTeX, these should be disabled by default, unless you enable them. – Steven B. Segletes Sep 1 '15 at 13:26
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    See this discussion: tex.stackexchange.com/q/262625/3929 – daleif Sep 1 '15 at 13:40
  • Okay, so in essence I don't have to worry as long as I don't touch the default settings? – lukas.coenig Sep 1 '15 at 13:57