stunnel         Universal SSL tunnel


FIPS support status:
- Unix platforms are currently supported.
  More testing is still required.
- Win32 platform is currently unsupported due to some
  problems with linking FIPS-enabled OpenSSL DLLs.

FIPS mode is autodetected if possible.  You can force it with:
    ./configure --enable-fips
or disable with:
    ./configure --disable-fips