You need to install the secure certificate.
Open the page, for example webadmin: https://192.168.15.6:3080/
Click on the 'Certification Error'
Click on 'View Certificates'.
Click on 'Certification Path'.
Click on 'Datatex Dynamics'.
Click on 'View Certificate'.
Click on install.
Save in Trusted Root Certification Authorities.
Verify address of webpage on certificate.
Open the page, for example webadmin: https://192.168.15.6:3080/
Click on the 'Certification Error'
Click on 'View Certificates'.
Click on 'General' tab.
'Issued to' will display the URL of the certificate. If it does not
match the URL that you used it will give you the error message
"There is a problem with this website's security certificate." and
have to click on the 'continue to this website (not recommended).
Note:
In IE -> TOOLS -> INTERNET OPTIONS -> ADVANCED -> SETTINGS
untick Use SSL 2.0
Tick Use SSL 3.0