Creating a certificate with the OpenSSL toolkit

Procedure

Enter the following command:
```
cd /etc/stunnel
```
To create the /etc/stunnel/stunnel.pem file with a certificate and key for SSL, enter the following command
```
$openssl req -new -x509 -days 365 -nodes -out stunnel.pem -keyout
/etc/stunnel/stunnel.pem
```
To change the permissions for the certificate that you generated, enter the following command.
```
$ sudo chmod 600 /etc/stunnel/stunnel.pem
```