Checks if ipsec connection is established. Restarts it if neccessary.

keep_alive_ipsec

#!/usr/bin/bash
# Add this script to /etc/crontab
# Set permissions to chmod 100 owner to execute only
#
echo "Keeping alive..."
IPSEC_CONN="iceland-vpn"
IS_UP_IPSEC=$(sudo ipsec status|grep ESTABLISHED|wc -l)
IS_CONNECTING=$(sudo ipsec status|grep "CONNECTING,"|wc -l)
if [[ $IS_CONNECTING -gt 0 ]]
then
        echo "IPSEC is connecting."
        exit 0
fi

if [[ $IS_UP_IPSEC -eq 1 ]]
then
        echo "VPN is UP. Do not need restart VPN tunnel."
else
        sudo ipsec down $IPSEC_CONN
        sudo ipsec up $IPSEC_CONN
        IS_UP_IPSEC=$(sudo ipsec status|grep ESTABLISHED|wc -l)
        if [[ $IS_UP_IPSEC -eq 1 ]]
        then
                echo "VPN is now UP."
        else
                sudo ipsec down $IPSEC_CONN
                sudo ipsec up $IPSEC_CONN
                IS_UP_IPSEC=$(sudo ipsec status|grep ESTABLISHED|wc -l)
                if [[ $IS_UP_IPSEC -eq 1 ]]
                then
                        echo "VPN is now UP."
                else
                        echo "Failed to restart VPN tunnel."
                        exit 1
                fi
        fi
fi