9.1.14.5. Transmission Confidentiality and IntegrityΒΆ
The stunnel module is a framework used by other modules to encrypt communications for applications that might not natively support it.
The cipher negotiation is determined by the OpenSSL ciphers. In a default SIMP system, this will be TLSv1.1 or higher.
The certificates used for stunnel are in the /etc/pki
directory.
References: SC-8 : TRANSMISSION CONFIDENTIALITY AND INTEGRITY