To activate the network monitoring, execute the following script:

activate_network_monitoring.sh

#!/bin/sh

NETWORK_MONITORING_CONF="/etc/network/networkmonitoring.conf"

# enable network monitoring
sed -i "s/monitor_network=.*/monitor_network=1/g" ${NETWORK_MONITORING_CONF}

reboot 

To deactivate the network monitoring, execute the following script:

deactivate_network_monitoring.sh

#!/bin/sh

NETWORK_MONITORING_CONF="/etc/network/networkmonitoring.conf"

# disable network monitoring
sed -i "s/monitor_network=.*/monitor_network=0/g" ${NETWORK_MONITORING_CONF}

reboot 

To get details about the network monitoring, read the page.