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.TH TWINTRO 8 "1 July 2000"
.SH NAME
twintro \- introduction to \fITripwire\fP software
.SH DESCRIPTION
.PP
\fITripwire 2.4\fP is a file integrity assessment product for Linux networks.  Rather than preventing an intruder or virus
from attacking system files, \fITripwire\fP detects intrusions when
they do occur. By comparing system files and directories against a
previously stored "baseline" database, \fITripwire\fP finds any
additions, deletions, or changes to specified properties.  This allows
the system administrator to determine the extent of the problem and
begin necessary damage control.
.PP
After \fITripwire\fP is installed on a system, the following four
commands are used:
.RS 0.3i
.ie n .HP
.el .PP
.BR tripwire (8)
is used for most of the basic operations of the
software.  This includes creation of the \fITripwire\fP database, and
checking the integrity of the filesystem against that database.
.ie n .HP
.el .PP
.BR twadmin (8)
is used to create, encode, and sign \fITripwire\fP policy,
configuration, and key files, and
for various administrative functions.
.ie n .HP
.el .PP
.BR twprint (8)
prints \fITripwire\fP database and report files in
a plain text format.
.ie n .HP
.el .PP
.BR siggen (8)
is a file utility that displays hash
values for files.
.RE
.PP
In addition to the command references listed above, the following three
man pages provide information on important components of the
\fITripwire\fP package.
.RS 0.3i
.ie n .HP
.el .PP
.BR twfiles (5)
provides an overview of the various files created and
used by \fITripwire\fP, including default locations and settings.
.ie n .HP
.el .PP
.BR twconfig (4)
explains the configuration file, which is used to set
system-specific information that affects \fITripwire\fP operation.
.ie n .HP
.el .PP
.BR twpolicy (4)
explains the policy file, which specifies the files
and directories \fITripwire\fP should check, and how they should be
scanned.
.RE
.PP
Using the  
.B \-\-help
flag with any \fITripwire\fP command
(e.g.\ \fBtripwire\ \-\-help\fP) will print a short summary of the
command modes for that command.  If a mode selector is also specified
(e.g.\ \fBtripwire\ \-\-check\ \-\-help\fP), a mode\-specific
usage message will be displayed.  Using the \fBall\fP argument with the
\fB\-\-help\fP flag (e.g.\ \fBtripwire\ \-\-help\ all\fP) will print
detailed usage messages for all modes of the specified command.
.SH VERSION INFORMATION
This man page describes
.IR "Tripwire 2.4" "."
.SH AUTHORS
Tripwire, Inc.
.SH COPYING PERMISSIONS
Permission is granted to make and distribute verbatim copies of this man page provided the copyright notice and this permission notice are preserved on all copies.
.PP
Permission is granted to copy and distribute modified versions of this man page under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one.
.PP
Permission is granted to copy and distribute translations of this man page into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by Tripwire, Inc.
.PP
Copyright 2000 Tripwire, Inc. Tripwire is a registered trademark of Tripwire, Inc. in the United States and other countries. All rights reserved.
.SH SEE ALSO
.BR tripwire (8),
.BR twadmin (8),
.BR twprint (8),
.BR siggen (8),
.BR twconfig (4),
.BR twpolicy (4),
.BR twfiles (5)
.PP
.IR "The Design and Implementation of Tripwire: A \s-1UNIX\s0 File Integrity Checker" by Gene Kim and Eugene Spafford.  Purdue Technical Report CSD-TR-93-071.