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#!/usr/bin/perl
#======================
# Created May 25, 2000
#======================
# This scripts is for checking for failed root login attempts on
# any machine running AIX which has a failedlogin file in /etc/security
# The purpose is to thwart (good word) any unauthorised people from
# even trying to log in as root. This plugin has been developed for Nagios
# running on AIX.
# Lonny Selinger SpEnTBoY lonny@abyss.za.org
# May
my $server = $ARGV[0];
if (!$ARGV[0]) {
print "You must specify a server to check\n";
print "usage: ./check_failed <Server Name>\n";
exit (-1);
} else {
open (DATE, "/bin/date '+%b %d' |");
while (<DATE>) {
$dline = $_;
@dresults = $dline;
chop $dresults[0];
}
open (SULOG, "rsh $server -l root who /etc/security/failedlogin | grep root |");
while (<SULOG>) {
$line = $_;
@results = split (/\s+/,$line);
if ($line =~ /^root/) {
if (join(' ', @results[2,3]) eq $dresults[0]) {
print "FAILED root login on $dresults[0], node: $ARGV[0] from $results[5]\n";
exit(2);
}
}
}
}
if (join(' ', @results[2,3]) ne $dresults[0]) {
print "No Failed Root Logins on This Node\n";
exit(0);
}
exit(0);
close(SULOG);
close(DATE);
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