102 lines
4.5 KiB
HTML
102 lines
4.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<HTML>
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<META NAME="GENERATOR" CONTENT="SGML-Tools 1.0.9">
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<TITLE>Sentry Firewall CD HOWTO: Troubleshooting</TITLE>
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<LINK HREF="Sentry-Firewall-CD-HOWTO-8.html" REL=next>
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<LINK HREF="Sentry-Firewall-CD-HOWTO-6.html" REL=previous>
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<LINK HREF="Sentry-Firewall-CD-HOWTO.html#toc7" REL=contents>
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<A HREF="Sentry-Firewall-CD-HOWTO-8.html">Next</A>
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<A HREF="Sentry-Firewall-CD-HOWTO.html#toc7">Contents</A>
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<HR>
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<H2><A NAME="s7">7. Troubleshooting</A></H2>
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<H2><A NAME="ss7.1">7.1 Booting Problems</A>
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</H2>
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<P> Booting problems are generally rare, and generally only occur on old and buggy,
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or somehow non-compliant hardware. Booting problems can be associated with a number
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of problems, depending upon at what point during the boot process the failure occurs.
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The following are possible causes of failure when booting from a CD.
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<P>
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<UL>
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<LI> Old or buggy BIOSes that do not fully support the eltorito standard. System
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may fail to load the isolinux bootloader or the kernel.</LI>
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<LI> Problematic CDROM drives can cause various problems when booting the CD.
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CD may or may not boot, and will generally have trouble accessing files
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on the CD.</LI>
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<LI> Damaged CD, obviously can cause a number of problems, similar symptoms as
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above.</LI>
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<LI> Insufficient hardware resources. Please see the "Minumum Requirements"
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section of this howto for more information on what is required to boot
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the CD.</LI>
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<LI> In the case of booting the Sentry Firewall CD, old or buggy floppy disk
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drives or damaged floppy disks can also result in serious problems, including
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curruption of the data on the floppy disk. The inability for the configuration
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scripts to read and parse files contained on the floppy disk can seriously inhibit
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the capability of the system to configure itself properly.</LI>
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</UL>
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<P>In general, hardware issues cause the majority of problems during the boot process
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of the Sentry Firewall CD, and may not always be easy to diagnose. Generally, the
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first step in debugging a general boot problem is to try and boot another CD in the
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same machine to attempt to rule out a hardware problem. And then attempt to boot
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the Sentry Firewall CD in another machine to attempt to rule out damage to the CD.
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If both these tests produce no negative results, then perhaps swap out the CDROM drives
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in the two machines, if possible, and do the test again. Then perhaps check out the
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general mailing list(mentioned below) for further assistance.
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<P>
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<P><BR>
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<H2><A NAME="ss7.2">7.2 Configuration Problems</A>
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</H2>
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<P> This section deals with configuration problems with the "sentry.conf" file.
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The sentry.conf configuration file, as mentioned in previous sections, tells the
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configuration scripts what to do during boot time to configure the running system.
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Syntax errors in the script can cause a file to be misplaced, or for the directive
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to not be parsed at all.
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<P>Error messages during the boot process of the Sentry Firewall CD can help greatly
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in diagnosing potential syntax or other types of errors. So watch the CD boot and
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write down any error messages that may pop up. Also, during bootup a logfile
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detailing the configuration process is created at /var/log/SENTRY_LOG. If
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you can log in to the system after it has booted, then take a look at this file for
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any obvious error messages.
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<P>
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<P><BR>
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<H2><A NAME="ss7.3">7.3 Frequently Asked Questions</A>
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</H2>
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<P> A FAQ is currently being maintained on the Sentry Firewall website, it can be
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accessed via the following URL:
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<A HREF="http://Sentry.SourceForge.net/files/FAQ">http://Sentry.SourceForge.net/files/FAQ</A>.
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<P>
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<P><BR>
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<H2><A NAME="ss7.4">7.4 Mailing List</A>
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</H2>
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<P> Thanks to
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<A HREF="http://www.SourceForge.net/">SourceForge.net</A>, there are mailing
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lists available for the Sentry CD. You can look through the archives, or subscribe to the general
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mailing list to ask questions or make comments. The following are links for the general
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Sentry-Users mailing list. Other mailing lists are listed at
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<A HREF="http://www.SentryFirewall.com/">SentryFirewall.com</A>.
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<P>
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<UL>
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<LI>
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<A HREF="http://lists.sourceforge.net/lists/listinfo/sentry-users">Subscribe to Sentry-Users</A></LI>
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<LI>
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<A HREF="http://www.geocrawler.com/redir-sf.php3?list=sentry-users">Sentry-Users Archives</A></LI>
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</UL>
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<P>
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<P>
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<P>
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<P><BR>
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<HR>
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<A HREF="Sentry-Firewall-CD-HOWTO-8.html">Next</A>
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<A HREF="Sentry-Firewall-CD-HOWTO-6.html">Previous</A>
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<A HREF="Sentry-Firewall-CD-HOWTO.html#toc7">Contents</A>
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