/usr/share/logwatch/scripts/services/portsentry is in logwatch 7.4.1-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 | #!/usr/bin/perl
##########################################################################
# $Id: portsentry 150 2013-06-18 22:19:38Z mtremaine $
##########################################################################
########################################################
# This was written and is maintained by:
# Osma Ahvenlampi <oa@iki.fi>
########################################################
#######################################################
## Copyright (c) 2008 Osma Ahvenlampi
## Covered under the included MIT/X-Consortium License:
## http://www.opensource.org/licenses/mit-license.php
## All modifications and contributions by other persons to
## this script are assumed to have been donated to the
## Logwatch project and thus assume the above copyright
## and licensing terms. If you want to make contributions
## under your own copyright or a different license this
## must be explicitly stated in the contribution an the
## Logwatch project reserves the right to not accept such
## contributions. If you have made significant
## contributions to this script and want to claim
## copyright please contact logwatch-devel@lists.sourceforge.net.
#########################################################
use Logwatch ':ip';
$Detail = $ENV{'LOGWATCH_DETAIL_LEVEL'} || 0;
while (defined($ThisLine = <STDIN>)) {
chomp($ThisLine);
next if ($ThisLine eq "");
if ( ( $ThisLine =~ /Starting portsentry/ ) or
( $ThisLine =~ /PortSentry is now active/ ) or
( $ThisLine =~ /Psionic PortSentry .* (starting|shutting)/ ) or
( $ThisLine =~ /portsentry shutdown/ ) ) {
# don't care
} elsif( ($scan,$host,$proto,$port) = ( $ThisLine =~ m|attackalert: (.+) scan from host: [^/]+/(\S+) to (\w+) port: (\d+)| ) ){
$host = LookupIP($host);
$Scans{$scan}{$host}{$port}++;
} elsif ( ($host) = ( $ThisLine =~ /Host (\S+) has been blocked/ ) ){
$host = LookupIP($host);
$Blocked{$host}++;
} elsif( ($host) = ( $ThisLine =~ /Host: (\S+) is already blocked/ ) ){
# ignore
} elsif( ($mode,$proto,$port) = ( $ThisLine =~ /: (.+) scan detection mode activated. Ignored (\w+) port: (\d+)/ ) ){
$Ignored{$mode}{$proto}{$port}++;
} elsif( ($mode,$port) = ( $ThisLine =~ /: (.+) mode will manually exclude port: (\d+)/ ) ){
$Exclude{$mode}{$port}++;
} else{
$Unknown{$ThisLine}++;
}
}
if (keys %Scans) {
print "\nWarning: Portscans detected";
foreach $mode (sort {$a cmp $b} keys %Scans) {
print "\n " . $mode . " from:";
foreach $host (sort {$a cmp $b} keys %{$Scans{$mode}}) {
print "\n " . $host . ": ports:";
$ports = $prev = $list = undef;
foreach $port (sort {$a <=> $b} keys %{$Scans{$mode}{$host}}) {
if ($prev && ($port-1) == $prev) {
$ports .= "-" if (!$list);
$list = 1;
} elsif ($list) {
$ports .= "$prev $port";
$list = undef;
} else {
$ports .= " $port";
}
$prev = $port;
}
$ports .= $prev if ($list);
# don't display the port list if it doesn't fit on one line
if (length($ports) > 55 && $Detail < 10) {
print " (too many, set Detail to High for complete list)";
} else {
print $ports;
}
}
}
print "\n";
}
if (keys %Blocked) {
print "\n";
foreach $host (keys %Blocked) {
print "Warning: Blocked route from/to $host $Blocked{$host} times(s).\n";
}
}
if ( ($Detail >= 10) and (keys %Ignored) ) {
print "\nIgnored following ports";
foreach $mode (sort {$a cmp $b} keys %Ignored) {
print "\n " . $mode . ":";
foreach $proto (sort {$a cmp $b} keys %{$Ignored{$mode}}) {
print "\n " . $proto . ": ports:";
$prev = $list = undef;
foreach $port (sort {$a <=> $b} keys %{$Ignored{$mode}{$proto}}) {
if ($prev && ($port-1) == $prev) {
print "-" if (!$list);
$list = 1;
} elsif ($list) {
print "$prev $port";
$list = undef;
} else {
print " $port";
}
$prev = $port;
}
print $prev if ($list);
}
}
print "\n";
}
if ( ($Detail >= 10) and (keys %Exclude) ) {
print "\nExcluded following ports";
foreach $mode (sort {$a cmp $b} keys %Exclude) {
print "\n " . $mode . ": ports:";
$prev = $list = undef;
foreach $port (sort {$a <=> $b} keys %{$Exclude{$mode}}) {
if ($prev && ($port-1) == $prev) {
print "-" if (!$list);
$list = 1;
} elsif ($list) {
print "$prev $port";
$list = undef;
} else {
print " $port";
}
$prev = $port;
}
print $prev if ($list);
}
print "\n";
}
if ( ($Detail >= 5) and (keys %Unknown) ) {
print "\n**Unmached entries**\n";
foreach $ThisOne (sort {$a cmp $b} keys %Unknown) {
print $Unknown{$ThisOne} . " Time(s): " . $ThisOne . "\n";
}
}
exit(0);
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# mode: perl
# perl-indent-level: 3
# indent-tabs-mode: nil
# End:
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