Poor man's intrusion notification system - Request for Comments
cron: -----------------------------
0 3 * * * /usr/bin/rkhunter --update
0 */2 * * * /usr/local/sbin/collector.pl
20 * * * * /usr/local/sbin/ids.sh
30 3 * * * /usr/local/sbin/backup.sh
[collector.pl] -----------------------------
#!/usr/bin/perl -w
use strict;
my %Cmds;
my $host = qw(XXXXX);
my $user = "root";
my $externalip = "X.X.X.X";
chdir "/data";
my @md5files = qw(/bin/login
/usr/bin/passwd
/bin/ps);
my ($Second, $Minute, $Hour, $Day, $Month, $Year, $WeekDay, $DayOfYear, $IsDST) = localtime(time);
if ($Hour == 8) {
$Cmds{'disk.usage'} = "df -lk";
$Cmds{'packages'} = "yum check-update"; }
$Cmds{'md5sigs'} = "md5sum @md5files";
$Cmds{'suidfiles'} = "find / ! -wholename '/proc*' -type f -perm +6000 |xargs ls -l";
$Cmds{'cron.root'} = "crontab -l -u root";
$Cmds{'nmap'} = "nmap -sS $externalip | egrep -v '^(Nmap|Starting)'";
#$Cmds{'chkroot'} = "/usr/bin/chkrootkit"; $Cmds{'/dev/null'} = "updatedb";
#$Cmds{'/dev/null'} = "/usr/bin/rkhunter --update";
$Cmds{'rootkithunt'} = "/usr/bin/rkhunter -c --no-mail-on-warning --rwo --noappend-log --sk --nocolors";
#$Cmds{'iptables'} = "/sbin/iptables --list";
$Cmds{'listening'} = "netstat -utan | grep -i listen";
#$Cmds{'rootkithunt'} = "cat /var/log/rkhunter/rkhunter.log";
### main loop ###
for my $file (keys %Cmds) {
my $cmd = $Cmds{$file};
### run each command on $host and print the
### output to $file
&run_command($cmd, $file, $host);
}
exit 0;
sub run_command() {
my ($cmd, $file, $host) = @_;
my ($stdout, $stderr, $exit) = system($cmd." > $file");
return;
}
[ids.sh] -----------------------------
#!/bin/bash
## look for discrepanices
/usr/bin/perl /usr/local/sbin/mail-output.pl --subject "XXXXX.domain.net ETC Change" --recip admin@domain.net "diff -b -B -p -r -I \"Updated\" -X /home/backup/backup-excludes -u /home/backup/etc /etc"
/usr/bin/perl /usr/local/sbin/mail-output.pl --subject "XXXXX.domain.net Config Change" --recip admin@domain.net "diff -a -b -B -p -r -u -I \"The system checks took\" -I \"Host is up\" /home/backup/files /data/"
## copy files
echo "Starting IDS data sync at `date`." > /home/backup/backup-ids.log
echo "" >> /home/backup/backup-ids.log
echo "Backing up /etc/..." >> /home/backup/backup-ids.log rsync -a --delete /etc/ /home/backup/etc/ >> /home/backup/backup-ids.log 2>> /home/backup/backup-ids.err
echo "" >> /home/backup/backup-ids.log
echo "Backing up config files..." >> /home/backup/backup-ids.log rsync -a --delete /data/* /home/backup/files >> /home/backup/backup-ids.log 2>> /home/backup/backup-ids.err echo "" >> /home/backup/backup-ids.log
echo "Backing up system files..." >> /home/backup/backup-ids.log rsync -a --delete /usr/local/sbin/* /home/backup/usr/local/sbin/ >> /home/backup/backup-ids.log 2>> /home/backup/backup-ids.err echo "" >> /home/backup/backup-ids.log
echo "Backup finished at `date`." >> /home/backup/backup-ids.log
[backup.sh] ----------------------------- #!/bin/bash
## zip & send
tar -czvf /home/XXXXX.tar.gz /home/backup/*
ls -alR /home/backup > /home/dirlist.txt
mail -s "XXXXX Backup Configs" -r backups@domain.net -a /home/XXXXX.tar.gz admin@domain.net < /home/dirlist.txt
Categories
- All Categories
- 61 LFX Mentorship
- 114 LFX Mentorship: Linux Kernel
- 618 Linux Foundation IT Professional Programs
- 322 Cloud Engineer IT Professional Program
- 141 Advanced Cloud Engineer IT Professional Program
- 56 DevOps Engineer IT Professional Program
- 67 Cloud Native Developer IT Professional Program
- 6 Express Training Courses
- 6 Express Courses - Discussion Forum
- 2.3K Training Courses
- 19 LFC110 Class Forum - Discontinued
- 9 LFC131 Class Forum
- 31 LFD102 Class Forum
- 178 LFD103 Class Forum
- LFD110 Class Forum
- 24 LFD121 Class Forum
- LFD133 Class Forum
- 2 LFD137 Class Forum
- 62 LFD201 Class Forum
- 2 LFD210 Class Forum
- 1 LFD210-CN Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum - Discontinued
- LFD233 Class Forum
- LFD237 Class Forum
- 23 LFD254 Class Forum
- 659 LFD259 Class Forum
- 108 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 4 LFD273 Class Forum
- LFS101 Class Forum
- LFS116 Class Forum
- 2 LFS145 Class Forum
- 28 LFS200 Class Forum
- 740 LFS201 Class Forum - Discontinued
- 1 LFS201-JP クラス フォーラム
- 13 LFS203 Class Forum
- 98 LFS207 Class Forum
- 301 LFS211 Class Forum
- 54 LFS216 Class Forum
- 47 LFS241 Class Forum
- 41 LFS242 Class Forum
- 38 LFS243 Class Forum
- 12 LFS244 Class Forum
- LFS245 Class Forum
- 41 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 143 LFS253 Class Forum
- LFS254 Class Forum
- LFS255 Class Forum
- 2 LFS256 Class Forum
- LFS257 Class Forum
- 1.2K LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 108 LFS260 Class Forum
- 147 LFS261 Class Forum
- 39 LFS262 Class Forum
- 83 LFS263 Class Forum - Discontinued
- 15 LFS264 Class Forum - Discontinued
- 11 LFS266 Class Forum - Discontinued
- 21 LFS267 Class Forum
- 18 LFS268 Class Forum
- 26 LFS269 Class Forum
- 204 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- LFS274 Class Forum
- 3 LFS281 Class Forum
- 258 LFW211 Class Forum
- 179 LFW212 Class Forum
- 9 SKF100 Class Forum
- SKF200 Class Forum
- 908 Hardware
- 221 Drivers
- 74 I/O Devices
- 44 Monitors
- 116 Multimedia
- 210 Networking
- 102 Printers & Scanners
- 86 Storage
- 765 Linux Distributions
- 88 Debian
- 66 Fedora
- 15 Linux Mint
- 13 Mageia
- 24 openSUSE
- 144 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 357 Ubuntu
- 483 Linux System Administration
- 40 Cloud Computing
- 70 Command Line/Scripting
- Github systems admin projects
- 95 Linux Security
- 80 Network Management
- 108 System Management
- 52 Web Management
- 75 Mobile Computing
- 25 Android
- 35 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 544 Off Topic
- 131 Introductions
- 223 Small Talk
- 22 Study Material
- 836 Programming and Development
- 285 Kernel Development
- 517 Software Development
- 975 Software
- 261 Applications
- 185 Command Line
- 3 Compiling/Installing
- 119 Games
- 318 Installation
- 65 All In Program
- 65 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)