Prepare for Stunnel Install
- Please note that installation does require a reboot of your PC / workstation.
- You may need Admin level access to your PC to complete the install.
- Download the latest version of stunnel here.
Installing Stunnel
- Install the most recent version of stunnel (5.75 in June 2025.)
- Choose the options that are appropriate for your organization.
- By default, stunnel will be installed in
C:\Program Files (x86)\
- During installation you will be asked questions to create a default certificate. This certificate will not be used, so you can enter whatever values you choose or just press Enter on all of the prompts.
- Do NOT run stunnel at the end of installation.
Install the Certificates
- Copy the the saved certificate files from step 1 (certs.pem, stunnel.pem) into the following directory:
C:\Program Files (x86)\stunnel\conf
Customize the Stunnel Configuration
- Edit the stunnel configuration file. The file is located here:
C:\Program Files (x86)\stunnel\conf\stunnel.conf
- Remove the semi-colon comments from the debug and output lines (lines 11 & 12):
debug=info
output=stunnel.log
- Add the following lines after "output=stunnel.log":
CAfile = certs.pem
cert = stunnel.pem
[Visimage Linux Prod]
; Prod connection to Linux
client = yes
accept = 30503
connect = visimage.fiservapps.com:8004
[Visimage Linux Cert]
; Cert connection to Linux
client = yes
accept = 30504
connect = visimage-cert.fiservapps.com:8004
Install the Stunnel Service
- Install the stunnel service using Powershell. If you installed stunnel for all users on the computer, you may need to run Powershell as the Administrator.
- When Windows Powershell is running, enter the following commands:
cd C:\Program Files (x86)\stunnel\bin
./stunnel -uninstall
./stunnel -install
Verifying the Installation
- Run Windows Services and verify that the stunnel service is running. The service is now called "Stunnel TLS Wrapper".
- If the service is running, launch Visimage3 and test that you are able to successfully start server.
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