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Tripwireインストール
[root@falcon21 ~]# yum -y install tripwire

tripwire初期設定 setup-keyfiles
[root@falcon21 ~]# tripwire-setup-keyfiles

---

The Tripwire site and local passphrases are used to sign a variety of
files, such as the configuration, policy, and database files.

Passphrases should be at least 8 characters in length and contain both
letters and numbers.

See the Tripwire manual for more information.

---

Creating key files...

(When selecting a passphrase, keep in mind that good passphrases typically
have upper and lower case letters, digits and punctuation marks, and are
at least 8 characters in length.)

Enter the site keyfile passphrase:
Verify the site keyfile passphrase:
Generating key (this may take several minutes)...Key generation complete.

(When selecting a passphrase, keep in mind that good passphrases typically
have upper and lower case letters, digits and punctuation marks, and are
at least 8 characters in length.)

Enter the local keyfile passphrase:
Verify the local keyfile passphrase:
Generating key (this may take several minutes)...Key generation complete.

---

Signing configuration file...
Please enter your site passphrase:
Wrote configuration file: /etc/tripwire/tw.cfg

A clear-text version of the Tripwire configuration file:
/etc/tripwire/twcfg.txt
has been preserved for your inspection. It is recommended that you
move this file to a secure location and/or encrypt it in place (using a
tool such as GPG, for example) after you have examined it.

 

---

Signing policy file...
Please enter your site passphrase:
Wrote policy file: /etc/tripwire/tw.pol

A clear-text version of the Tripwire policy file:
/etc/tripwire/twpol.txt
has been preserved for your inspection. This implements a minimal
policy, intended only to test essential Tripwire functionality. You
should edit the policy file to describe your system, and then use
twadmin to generate a new signed copy of the Tripwire policy.

Once you have a satisfactory Tripwire policy file, you should move the
clear-text version to a secure location and/or encrypt it in place
(using a tool such as GPG, for example).

Now run "tripwire --init" to enter Database Initialization Mode. This
reads the policy file, generates a database based on its contents, and
then cryptographically signs the resulting database. Options can be
entered on the command line to specify which policy, configuration, and
key files are used to create the database. The filename for the
database can be specified as well. If no options are specified, the
default values from the current configuration file are used.

-------------------------
Tripwire設定
[root@falcon21 ~]# vi /etc/tripwire/twcfg.txt
9 LOOSEDIRECTORYCHECKING =true
12 REPORTLEVEL =4

[root@falcon21 ~]# twadmin -m F -c /etc/tripwire/tw.cfg -S /etc/tripwire/site.key /etc/tripwire/twcfg.txt
Please enter your site passphrase:
Wrote configuration file: /etc/tripwire/tw.cfg

[root@falcon21 ~]# rm -f /etc/tripwire/twcfg.txt

**************************************************************
ポリシーファイルを最適化スクリプト作成

[root@falcon21 ~]# vi /etc/tripwire/twpolmake.pl
#!/usr/bin/perl

# Tripwire Policy File customize tool

# ----------------------------------------------------------------

# Copyright (C) 2003 Hiroaki Izumi

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

# ----------------------------------------------------------------

# Usage:

# perl twpolmake.pl {Pol file}

# ----------------------------------------------------------------

#

$POLFILE=$ARGV[0];

open(POL,"$POLFILE") or die "open error: $POLFILE" ;

my($myhost,$thost) ;

my($sharp,$tpath,$cond) ;

my($INRULE) = 0 ;

while (<POL>) {

chomp;

if (($thost) = /^HOSTNAME\s*=\s*(.*)\s*;/) {

$myhost = `hostname` ; chomp($myhost) ;

if ($thost ne $myhost) {

$_="HOSTNAME=\"$myhost\";" ;

}

}

elsif ( /^{/ ) {

$INRULE=1 ;

}

elsif ( /^}/ ) {

$INRULE=0 ;

}

elsif ($INRULE == 1 and ($sharp,$tpath,$cond) = /^(\s*\#?\s*)(\/\S+)\b(\s+->\s+.+)$/) {

$ret = ($sharp =~ s/\#//g) ;

if ($tpath eq '/sbin/e2fsadm' ) {

$cond =~ s/;\s+(tune2fs.*)$/; \#$1/ ;

}

if (! -s $tpath) {

$_ = "$sharp#$tpath$cond" if ($ret == 0) ;

}

else {

$_ = "$sharp$tpath$cond" ;

}

}

print "$_\n" ;

}

close(POL) ;

********************************************
[root@falcon21 ~]# perl /etc/tripwire/twpolmake.pl /etc/tripwire/twpol.txt > /etc/tripwire/twpol.txt.new

[root@falcon21 ~]# echo ! "/var/lib/tripwire/`hostname`.twd ;" >> /etc/tripwire/twpol.txt.new

[root@falcon21 ~]# echo ! "/tmp/tripwire.log ;" >> /etc/tripwire/twpol.txt.new

[root@falcon21 ~]# twadmin -m P -c /etc/tripwire/tw.cfg -p /etc/tripwire/tw.pol -S /etc/tripwire/site.key /etc/tripwire/twpol.txt.new
Please enter your site passphrase:
Wrote policy file: /etc/tripwire/tw.pol

[root@falcon21 ~]# rm -f /etc/tripwire/twpol.txt*

-------------------------------------------------

Tripwireデータベース作成 ・・・少し、時間がかかる。
[root@falcon21 ~]# tripwire -m i -s -c /etc/tripwire/tw.cfg
Please enter your local passphrase:

******************************************************************************
Tripwire確認　

[root@falcon21 ~]# tripwire -m c -s -c /etc/tripwire/tw.cfg
Open Source Tripwire(R) 2.4.3.4 Integrity Check Report

 

Report generated by: root

Report created on: 2017年05月21日 11時38分33秒

Database last updated on: Never

 

===============================================================================

Report Summary:

==============================================================================

 

Host name: falcon21.space

Host IP address: 192.168.2.103

Host ID: None

Policy file used: /etc/tripwire/tw.pol

Configuration file used: /etc/tripwire/tw.cfg

Database file used: /var/lib/tripwire/falcon21.space.twd

Command line used: tripwire -m c -s -c /etc/tripwire/tw.cfg

 

===============================================================================

Rule Summary:

===============================================================================

 

---

 

Section: Unix File System

---

 

Rule Name Severity Level Added Removed Modified

--------- -------------- ----- ------- --------

Invariant Directories 66 0 0 0

Temporary directories 33 0 0 0

Tripwire Data Files 100 0 0 0

Critical devices 100 0 0 0

(/proc/kcore)

User binaries 66 0 0 0

Tripwire Binaries 100 0 0 0

Libraries 66 0 0 0

Operating System Utilities 100 0 0 0

Critical system boot files 100 0 0 0

File System and Disk Administraton Programs

100 0 0 0

Kernel Administration Programs 100 0 0 0

Networking Programs 100 0 0 0

System Administration Programs 100 0 0 0

Hardware and Device Control Programs

100 0 0 0

System Information Programs 100 0 0 0

Application Information Programs

100 0 0 0

(/sbin/rtmon)

Shell Related Programs 100 0 0 0

(/sbin/getkey)

Critical Utility Sym-Links 100 0 0 0

Shell Binaries 100 0 0 0

System boot changes 100 0 0 0

OS executables and libraries 100 0 0 0

Critical configuration files 100 0 0 0

Security Control 100 0 0 0

Login Scripts 100 0 0 0

 

• Root config files 100 4 2 9

 

Total objects scanned: 58087

Total violations found: 15

 

===============================================================================

Object Summary:

===============================================================================

 

---

 

# Section: Unix File System

---

 

---

 

Rule Name: Root config files (/root)

Severity Level: 100

---

 

Added:

"/root/.config/libreoffice/4/.lock"

"/root/.local/share/gvfs-metadata/uuid-439a0d17-d90e-4bdc-b022-5e8d8650cf73-deb0133d.log"

"/root/.local/share/gvfs-metadata/home-e28d9b0d.log"

"/root/tripwire.sh"

 

Removed:

"/root/.local/share/gvfs-metadata/home-280f32bc.log"

"/root/.local/share/gvfs-metadata/uuid-439a0d17-d90e-4bdc-b022-5e8d8650cf73-a2ec7b10.log"

 

Modified:

"/root/.cache/gedit/gedit-metadata.xml"

"/root/.config/libreoffice/4/user/registrymodifications.xcu"

"/root/.gconf/apps/gedit-2/preferences/ui/statusbar/%gconf.xml"

"/root/.gnome2/accels/gedit"

"/root/.gnome2/gedit/gedit-2"

"/root/.local/share/gvfs-metadata/home"

"/root/.local/share/gvfs-metadata/uuid-439a0d17-d90e-4bdc-b022-5e8d8650cf73"

"/root/.local/share/recently-used.xbel"

"/root/.vnc/falcon21.space:1.log"

===============================================================================

Error Report:

===============================================================================

 

No Errors

 

---

 

* End of report *

 

Open Source Tripwire 2.4 Portions copyright 2000-2017 Tripwire, Inc. Tripwire is a registered

trademark of Tripwire, Inc. This software comes with ABSOLUTELY NO WARRANTY;

for details use --version. This is free software which may be redistributed

or modified only under certain conditions; see COPYING for details.

All rights reserved.

 

***************************************************************************
Tripwire定期自動実行スクリプト作成設定

[root@falcon21 ~]# 　vi tripwire.sh

#!/bin/bash

# 既存のTripwire定期自動実行設定削除

rm -f /etc/cron.daily/tripwire-check

# パスフレーズ設定

LOCALPASS=xsw2 # ローカルパスフレーズ

SITEPASS=zaq1 # サイトパスフレーズ

TRIPWIRE=/usr/sbin/tripwire

TWADMIN=/usr/sbin/twadmin

TWPRINT=/usr/sbin/twprint

cd /etc/tripwire

# Tripwireチェック実行

# ※ファイル変更を検知した場合のみroot宛にサマリをメールする

rm -f /var/lib/tripwire/report/`hostname`-`date +%Y%m%d`-*.twr

${TRIPWIRE} -m c -s -c tw.cfg > /tmp/tripwire.log

if [ $(grep "Total violations found" /tmp/tripwire.log | awk '{print $4}') -ne 0 ]; then

${TWPRINT} -m r --report-level 1 -c tw.cfg -r /var/lib/tripwire/report/`hostname`-`date +%Y%m%d`-*.twr | \

mail -s "Tripwire Integrity Check Report from `hostname`" root

fi

# Tripwireチェック実行結果（過去分）削除

# ※過去90日分保管

tmpwatch -m 2160 /var/lib/tripwire/report

# ポリシーファイル最新化

${TWADMIN} -m p -c tw.cfg -p tw.pol -S site.key > twpol.txt

perl twpolmake.pl twpol.txt > twpol.txt.new

${TWADMIN} -m P -c tw.cfg -p tw.pol -S site.key -Q $SITEPASS twpol.txt.new > /dev/null

rm -f twpol.txt* *.bak

# データベース最新化

rm -f /var/lib/tripwire/*.twd*

${TRIPWIRE} -m i -s -c tw.cfg -P $LOCALPASS
===============================================================================

No Errors

---

 

* End of report *

Open Source Tripwire 2.4 Portions copyright 2000-2017 Tripwire, Inc. Tripwire is a registered

trademark of Tripwire, Inc. This software comes with ABSOLUTELY NO WARRANTY;

for details use --version. This is free software which may be redistributed

or modified only under certain conditions; see COPYING for details.

All rights reserved.

***************************************************************************

Tripwire定期自動実行スクリプト作成設定
[root@falcon21 ~]# 　vi tripwire.sh
#!/bin/bash
# 既存のTripwire定期自動実行設定削除
rm -f /etc/cron.daily/tripwire-check
# パスフレーズ設定

LOCALPASS=xxxx# ローカルパスフレーズ

SITEPASS=yyyy# サイトパスフレーズ

TRIPWIRE=/usr/sbin/tripwire

TWADMIN=/usr/sbin/twadmin

TWPRINT=/usr/sbin/twprint

cd /etc/tripwire

# Tripwireチェック実行

# ※ファイル変更を検知した場合のみroot宛にサマリをメールする

rm -f /var/lib/tripwire/report/`hostname`-`date +%Y%m%d`-*.twr

${TRIPWIRE} -m c -s -c tw.cfg > /tmp/tripwire.log

if [ $(grep "Total violations found" /tmp/tripwire.log | awk '{print $4}') -ne 0 ]; then

${TWPRINT} -m r --report-level 1 -c tw.cfg -r /var/lib/tripwire/report/`hostname`-`date +%Y%m%d`-*.twr | \

mail -s "Tripwire Integrity Check Report from `hostname`" root

fi

# Tripwireチェック実行結果（過去分）削除

# ※過去90日分保管

tmpwatch -m 2160 /var/lib/tripwire/report

# ポリシーファイル最新化

${TWADMIN} -m p -c tw.cfg -p tw.pol -S site.key > twpol.txt

perl twpolmake.pl twpol.txt > twpol.txt.new

${TWADMIN} -m P -c tw.cfg -p tw.pol -S site.key -Q $SITEPASS twpol.txt.new > /dev/null

rm -f twpol.txt* *.bak

# データベース最新化

rm -f /var/lib/tripwire/*.twd*

${TRIPWIRE} -m i -s -c tw.cfg -P $LOCALPASS

*************************************************************************
[root@falcon21 ~]# chmod 700 tripwire.sh

[root@falcon21 ~]# echo "0 3 * * * root /root/tripwire.sh" > /etc/cron.d/tripwire

*************************************************************************
変更がわかっているディレクトリやファイルについては検知されないようにする
[root@falcon21 ~]# twadmin -m p -c /etc/tripwire/tw.cfg -p /etc/tripwire/tw.pol -S /etc/tripwire/site.key > /etc/tripwire/twpol.txt

[root@falcon21 ~]# twadmin -m p -c /etc/tripwire/tw.cfg -p /etc/tripwire/tw.pol -S /etc/tripwire/site.key > /etc/tripwire/twpol.txt
[root@falcon21 ~]# echo '!/var/log/sa ;' >> /etc/tripwire/twpol.txt
[root@falcon21 ~]# echo '!/etc/sysconfig/iptables ;' >> /etc/tripwire/twpol.txt

[root@falcon21 ~]# twadmin -m P -c /etc/tripwire/tw.cfg -p /etc/tripwire/tw.pol -S /etc/tripwire/site.key /etc/tripwire/twpol.txt
Please enter your site passphrase:
Wrote policy file: /etc/tripwire/tw.pol

[root@falcon21 ~]# rm -f /etc/tripwire/twpol.txt /etc/tripwire/tw.pol.bak

[root@falcon21 ~]# rm -f /var/lib/tripwire/*.twd* ; tripwire -m i -s -c /etc/tripwire/tw.cfg
Please enter your local passphrase: ・・・少し、時間がかかる。

**********************************************************************************