[stunnel-users] basic usage question

[Mark Foley]

I'm trying to set up an ssl tunnel for VNC per the instructions at 
https://www.ibm.com/developerworks/library/l-sslvnc/index.html. I've not gotten
very far into the steps. I tried:

# stunnel -d 5905 -r 5900 -p /root/combined.pem 
[ ] Clients allowed=500
[.] stunnel 5.35 on x86_64-slackware-linux-gnu platform
[.] Compiled with OpenSSL 1.0.2h  3 May 2016
[.] Running  with OpenSSL 1.0.2n  7 Dec 2017
[.] Update OpenSSL shared libraries or rebuild stunnel
[.] Threading:PTHREAD Sockets:POLL,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI
Auth:LIBWRAP
[ ] errno: (*__errno_location ())
[!] Invalid configuration file name "-d"
[!] realpath: No such file or directory (2)
[ ] Cron thread initialized

I find nothing on the -d, -r or -p options in the manpage. 

This is my 1st posting to this list. I have very rudimentary skills with ssl,
ssh, and certificates, mainly limited to getting certificates from a provider
and installing for web and email; and creating public keys for ssh login using
ssh-keygen. That's about it, so I'm pretty much a certified newbie.

Help getting past the starting gate would be greatly appreciated.

THX --Mark