Stunnel 4 configuration files. Files found under the /etc/stunnel directory that end with .conf are used by the stunnel4 service as configuration files, and each will be used to start a daemon process setting up a tunnel with the given configuration. Note that this directory is initially empty, as the settings you may want for your tunnels are completely system dependent. A sample configuration file with defaults may be found at /usr/share/doc/stunnel4/examples/stunnel.conf-sample