stunnel.conf for turnkey v15.x Debian 9/Stretch

stunnel.conf

; **************************************************************************
; * Global options                                                         *
; **************************************************************************

; A copy of some devices and system files is needed within the chroot jail
; Chroot conflicts with configuration file reload and many other features
; Remember also to update the logrotate configuration.
chroot = /var/lib/stunnel4/
; Chroot jail can be escaped if setuid option is not used
setuid = stunnel4
setgid = stunnel4

; PID is created inside the chroot jail
pid = /stunnel4.pid

; Debugging stuff (may useful for troubleshooting)
;debug = 7
;output = /var/log/stunnel4/stunnel.log

; **************************************************************************
; * Service defaults may also be specified in individual service sections  *
; **************************************************************************

; Certificate/key is needed in server mode and optional in client mode
cert = /etc/ssl/private/cert.pem

; Authentication stuff needs to be configured to prevent MITM attacks
; It is not enabled by default!
;verify = 2
; Don't forget to c_rehash CApath
; CApath is located inside chroot jail
;CApath = /certs
; It's often easier to use CAfile
;CAfile = /etc/stunnel/certs.pem
; Don't forget to c_rehash CRLpath
; CRLpath is located inside chroot jail
;CRLpath = /crls
; Alternatively CRLfile can be used
;CRLfile = /etc/stunnel/crls.pem

; Disable support for insecure SSLv2 protocol
options = NO_SSLv3

; Workaround for Eudora bug
;options = DONT_INSERT_EMPTY_FRAGMENTS

; These options provide additional security at some performance degradation
;options = SINGLE_ECDH_USE
;options = SINGLE_DH_USE

options = CIPHER_SERVER_PREFERENCE
renegotiation = no

; secure ciphens added by conf script
ciphers=ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA:ECDHE-ECDSA-AES128-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA256

[shellinabox]
accept  = 12320
connect = 127.0.0.1:12319
TIMEOUTclose = 0

[webmin]
accept  = 12321
connect = 127.0.0.1:10000
TIMEOUTclose = 0