172 lines
3.7 KiB
HTML
172 lines
3.7 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>Security considerations and other risks</TITLE
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NAME="GENERATOR"
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TITLE="Fedora Multimedia Installation HOWTO"
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TITLE="Packages, Tools and Repositories"
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HREF="x82.html"><LINK
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TITLE="Macromedia Flash"
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>Fedora Multimedia Installation HOWTO</TH
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><H1
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CLASS="sect1"
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><A
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NAME="AEN126"
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></A
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>3. Security considerations and other risks</H1
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><P
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>All the yum commands I give in this HOWTO have to be run from the
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root prompt so the packages they fetch can be installed in your system
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space. This means there is a risk that your system could be compromised by
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a Trojan Horse RPM, either one inserted in one of the repositories you
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query or one slipped to you by a man-in-the-middle attack getting between
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you and a repository.</P
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><P
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>To control the latter risk, many repositories cryptographically sign
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their RPMs. You need to have a local copy of each repository's public key
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in order to integrity-check incoming packages; current versions of yum will
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dowmload one for you. This could be defeated by a man-in-the-middle attack
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spoofing the repo site and slipping you bogus keys as you set up your
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configuration; while this possibility is extremely unlikely, you should be
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aware of it.</P
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><P
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>A long-term risk that you accept by using the proprietary code
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referenced in this HOWTO is that of becoming dependent on the whims of a
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proprietary software vendor. It isn't necessary to have that old-time Free
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Software religion to see that this is a problem. Some of the software
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we'll cover here (the Sun Java JDK plugin is a good example) is
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distributed as closed-source freeware — which is all very well, but
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what happens if the vendor changes its mind in the future? You could be
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stranded.</P
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><P
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>It's unsafe to be dependent on proprietary software and proprietary
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formats. When you allow yourself to be dependent, you also harm others by
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helping vendors maintain an unhealthy monopoly lock on their market
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segment. So, if you must buy into these tools, please find some way to
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support open-source replacements — donate coding time or cash, or
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spend effort pressuring vendors to open up. Rip your CDs to Ogg Vorbis
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rather than MP3. Write a letter to your legislator urging repeal of the
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DMCA. The freedom you save <EM
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>will</EM
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> be your own.</P
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></DIV
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VALIGN="top"
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HREF="x82.html"
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>Prev</A
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>Next</A
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><TR
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>Packages, Tools and Repositories</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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> </TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>Macromedia Flash</TD
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></TR
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> |