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<p class="MsoNormal"><span style="mso-fareast-language:EN-AU">Greetings!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU">Could someone send me nagios plugin which is tested and works well for monitoring IPTABLES in Linux.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU">I have tested below script but it is not returning correct output to nagios server.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU">If I execute script manually, it shows correct output…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU">But if I execute via ./check_nrpe – H localhost –c check_iptables, it shows wrong output.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU">Below is my plugin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU">------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Book Antiqua","serif";mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal">#!/bin/bash<o:p></o:p></p>
<p class="MsoNormal">set -x<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">IPT='/sbin/iptables'<o:p></o:p></p>
<p class="MsoNormal">GREP='/bin/grep'<o:p></o:p></p>
<p class="MsoNormal">AWK='/bin/awk'<o:p></o:p></p>
<p class="MsoNormal">EXPR='/usr/bin/expr'<o:p></o:p></p>
<p class="MsoNormal">WC='/usr/bin/wc'<o:p></o:p></p>
<p class="MsoNormal">A='/usr/bin/sudo'<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">E_SUCCESS="0"<o:p></o:p></p>
<p class="MsoNormal">E_CRITICAL="2"<o:p></o:p></p>
<p class="MsoNormal">E_UNKNOWN="3"<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">CHAINS=`$A $IPT -nvL | $GREP 'Chain' | $AWK '{ print $2 }'| $GREP Cid | $WC -l`<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> if [ $CHAINS -ne 0 ] ; then<o:p></o:p></p>
<p class="MsoNormal"> echo "Firewall is running!"<o:p></o:p></p>
<p class="MsoNormal"> exit ${E_SUCCESS}<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> elif [ $CHAINS -eq 0 ] ; then<o:p></o:p></p>
<p class="MsoNormal"> echo "Firewall is not running"<o:p></o:p></p>
<p class="MsoNormal"> exit ${E_CRITICAL}<o:p></o:p></p>
<p class="MsoNormal"> fi<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt"><o:p> </o:p></span></p>
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