Stunnel for VSI OpenVMS

This document provides instructions for installing and setting up Stunnel 5.56 on VSI OpenVMS. Stunnel is a proxy that adds SSL/TLS encryption to existing client and server applications. The release is multi-threaded and statically linked with OpenSSL 1.1.1g, though it currently lacks IPv6 support. The documentation details the PCSI installation process, necessary privileges, recommended system quotas, and steps to configure Stunnel for service at boot and shutdown.