I want to scan the website: https://sonyadmin.vnpt-invoice.com.vn to see the rating of security level but the system gave error message that : Unable to connect to the server as below screen.
Noted that, we already add 3 IP below to whitelist IP but still can't scan the website:
SSLLABS.com - 184.108.40.206
SSL Pulse - 220.127.116.11
Development SSL Labs server - 18.104.22.168
Does anyone know how to scan the website https://sonyadmin.vnpt-invoice.com.vn ?
Please help me on this matter.