stunnel 5.67-1 is now available in Cygwin. This release has bug fixes and
minor improvements. Please see the upstream changelog[1] for the full list.

stunnel is a program that allows you to encrypt arbitrary TCP connections
inside TLS (Transport Layer Security, the successor to Secure Sockets Layer
(SSL)). stunnel can allow you to secure non-TLS-aware daemons and
protocols (like POP, IMAP, LDAP, etc) by having stunnel provide the
encryption, requiring no changes to the daemon's code.

Andrew E. Schulman

[1]https://www.stunnel.org/NEWS.html