NAME stunnel - universal SSL tunnel 2. The concept is that having non-SSL aware daemons running on your system you can easily set them up to communicate with clients over secure SSL channels. POP-3, and IMAP servers, to standalone daemons like NNTP, SMTP and HTTP, and in tunneling PPP over network sockets without changes to the source code. All logs for the specified level and all levels numerically less than it will be shown. The syslog facility 'daemon' will be used unless a facility name is supplied.
Case is ignored for both facilities and levels.
See 'stunnel -V' for options supported on your system and their default values. Append log messages to a file. A colon delimited list of the ciphers to allow in the SSL connection. Using client side certs is optional. This is the directory in which stunnel will look for certificates when using the -v options.