The stunnel program is designed to work as an SSL encryption wrapper between remote client and local (inetd-startable) or remote server.
Stunnel can be used to add SSL functionality to commonly used inetd daemons like POP3, POP2 and IMAP servers without any changes in the programs' code.
Stunnel uses OpenSSL or SSLeay libraries for cryptography, so it supports whatever cryptographic algorithms you compiled into your library.
- FIPS-compliant OpenSSL DLLs are supplied with the Windows installer.
- FIPS mode can be disabled with the "fips = no" configuration file option.
- The stability of the Windows GUI was also improved.