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nagios-plugins/check_firewall_active/check_firewall_active.sh
Richard Allen 3501677f20 Initial commit of check_firewall_active (#28)
* Initial commit of check_firewall_active
* Fixing things found in the review.  Started work on rpm spec file
* Fixing spec a bit
* Fixing url
2016-12-21 12:40:29 +00:00

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#!/bin/bash
EXIT_OK=0
EXIT_WARN=1
EXIT_CRIT=2
PATH=/sbin:/usr/sbin:$PATH
if [ "$(id -u)" != "0" ]; then
echo "This script must be run as root" 1>&2
exit $EXIT_CRIT
fi
blocks=$(iptables -L -v -n | egrep 'REJECT|DROP' | wc -l)
if [ $blocks -eq 0 ]; then
echo "CRITICAL: No firewall detected"
exit $EXIT_CRIT
fi
echo "OK: Firewall is active"
exit $EXIT_OK