openssl genrsa -out /etc/stunnel/stunnel.key 4096
openssl req -new -x509 -key /etc/stunnel/stunnel.key -out /etc/stunnel/stunnel.crt -days 365
cat /etc/stunnel/stunnel.key /etc/stunnel/stunnel.crt > /etc/stunnel/stunnel.pem
chmod 440 /etc/stunnel/stunnel.pem