Cannot access https admin page with safari 11.0

[marsel60]

Hello to everyone,

as per my message subject, I'm no more able to access admin page using https://xxx.xxx.xxx.xxx/admin/ using safari ver. 11.0 (High Sierra OS).

Safari warn me about "this connection is not private" and even if I choose to visit and add the https site it will loop back to the first message "This connection is not private"....

If I try to open the admin page using Chrome, it works perfectly.

I tried to find a similar problem and solution w/o success, can anyone point me on a solution?

Many thanks in advance for your help.

[StephenB]

I'm not an OSX user, but I am wondering if this method (for OSX 10) works?  https://tosbourn.com/getting-os-x-to-trust-self-signed-ssl-certificates/

[evan2]

I remembered there is a issue for cloud page open on safari 11.0,

but safari 11.0 can open NAS admin GUI,

I need to double check again.

[marsel60]

Hello folks,

thanks for your time. I want to add some more info about the problem. I already tried to delete certifcates used in my keychain (since I use an https GUI) about my Readynas and than connect back to the GUI using new certificates... no solution. I tried also to clear my safari cache and cookies... no way, same problem. It still continue to work only with Chrome.

I will read now your links to understand if I can try some more solution and I'll let you know.

Thanks again for your reply. 

[genesearch]

This issue is caused by HSTS policy.

https://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security

dont ask me what the answer is though.