先ずはインストールだがEPELを有効にしておく事（ここの最後を参照）
参考（https://centossrv.com/tripwire.shtml）
# dnf -y install tripwire インストール
# tripwire-setup-keyfiles 設定ファイルを作成
表示が出た後
Enter the site keyfile passphrase: ここで自分で決めたサイトPWを入力
Verify the site keyfile passphrase: 再度入力
少しして
Enter the local keyfile passphrase: ここで自分で決めたローカルPWを入力
Verify the local keyfile passphrase: 再度入力 する
少しして
Please enter your site passphrase:
となるので、サイトPWを入力 再度聞いてくる、
Please enter your site passphrase: となるので、サイトPWを入力 これで終了
# gedit /etc/tripwire/twcfg.txt 設定の修正
ROOT =/usr/sbin
POLFILE =/etc/tripwire/tw.pol
DBFILE =/var/lib/tripwire/$(HOSTNAME).twd
REPORTFILE =/var/lib/tripwire/report/$(HOSTNAME)-$(DATE).twr
SITEKEYFILE =/etc/tripwire/site.key
LOCALKEYFILE =/etc/tripwire/$(HOSTNAME)-local.key
EDITOR =/bin/vi LATEPROMPTING =false
LOOSEDIRECTORYCHECKING =true trueに変更
MAILNOVIOLATIONS =true
EMAILREPORTLEVEL =3
REPORTLEVEL =4 4に変更
MAILMETHOD =SENDMAIL
SYSLOGREPORTING =false
MAILPROGRAM =/usr/sbin/sendmail -oi -t
で保存しておく、次にTripwire設定ファイル(暗号署名版)作成
# twadmin -m F -c /etc/tripwire/tw.cfg -S /etc/tripwire/site.key /etc/tripwire/twcfg.txt
site passphraseを聞いてくるので入力。その後設定ファイルを削除
# rm -f /etc/tripwire/twcfg.txt
ポリシーファイル最適化スクリプト作成
# gedit /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) ;
# perl /etc/tripwire/twpolmake.pl /etc/tripwire/twpol.txt > /etc/tripwire/twpol.txt.new ← ポリシーファイル最適化
# echo ! “/var/lib/tripwire/`hostname`.twd ;” >> /etc/tripwire/twpol.txt.new ← Tripwireデータベース自体をチェック対象外にする
# echo ! “/tmp/tripwire.log ;” >> /etc/tripwire/twpol.txt.new ← Tripwireログをチェック対象外にする
最適化済ポリシーファイルを元にポリシーファイル(暗号署名版)作成
# twadmin -m P -c /etc/tripwire/tw.cfg -p /etc/tripwire/tw.pol -S /etc/tripwire/site.key /etc/tripwire/twpol.txt.new
site passphraseを聞いてくるので入力。そしてポリシーファイル(テキスト版)削除
# rm -f /etc/tripwire/twpol.txt*
Tripwireデータベース作成
# tripwire -m i -s -c /etc/tripwire/tw.cfg
local passphraseを聞いてくるので入力 Tripwireチェック実行
# tripwire -m c -s -c /etc/tripwire/tw.cfg
Open Source Tripwire(R) 2.4.3.7 Integrity Check Report
Report generated by: root
Report created on: 2023年01月17日 05時40分21秒
Database last updated on: Never
=========================================================================
Report Summary:
=========================================================================
Host name: kvm5.inpac.jp
Host IP address: 133.149.213.105
Host ID: None
Policy file used: /etc/tripwire/tw.pol
Configuration file used: /etc/tripwire/tw.cfg
Database file used: /var/lib/tripwire/kvm5.inpac.jp.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
--------- -------------- ----- ------- ---
User binaries 66 0 0 0
Tripwire Binaries 100 0 0 0
Libraries 66 0 0 0
Operating System Utilities 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
(/sbin/runlevel)
Application Information Programs
100 0 0 0
(/sbin/rtmon)
Critical Utility Sym-Links 100 0 0 0
Shell Binaries 100 0 0 0
Critical system boot files 100 0 0 0
* Tripwire Data Files 100 1 0 0
System boot changes 100 0 0 0
OS executables and libraries 100 0 0 0
Security Control 100 0 0 0
Login Scripts 100 0 0 0
Critical configuration files 100 0 0 0
* Root config files 100 0 0 1
Invariant Directories 66 0 0 0
Temporary directories 33 0 0 0
Critical devices 100 0 0 0
(/proc/kcore)
Total objects scanned: 44064
Total violations found: 2
=========================================================================
Object Summary:
=========================================================================
# Section: Unix File System
-------------------------------------------------------------------------
-------------------------------------------------------------------------
Rule Name: Tripwire Data Files (/var/lib/tripwire)
Severity Level: 100
-------------------------------------------------------------------------
Added:
"/var/lib/tripwire/kvm5.inpac.jp.twd"
-------------------------------------------------------------------------
Rule Name: Root config files (/root)
Severity Level: 100
-------------------------------------------------------------------------
Modified:
"/root/.local/share/gnome-shell/application_state"
=========================================================================
Error Report:
=========================================================================
No Errors
-------------------------------------------------------------------------
*** End of report ***
Open Source Tripwire 2.4 Portions copyright 2000-2018 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.
