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