Website Works on Computer, not iOS device

Help
1

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My domain is: secure.o3i.international

It produced this output: Website works on desktop computer but will not work on iOS device (iPhone, iPad, etc).

My web server is (include version): Ubuntu 16.04

The operating system my web server runs on is (include version): Windows 10, Android

My hosting provider, if applicable, is: On prem

I can login to a root shell on my machine (yes or no, or I don’t know): yes

I’m using a control panel to manage my site (no, or provide the name and version of the control panel): No

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot): 0.40.1

Hi All!

I’m having an issue with my site. After installing my SSL certificate I am now unable to view my site from my iPhone. It works just fine on my computer. I ran tests and the SSL certificate installed on the site successfully.

Your help is appreciated!

2

Hi,

What iPhone / version do you have?

https://www.ssllabs.com/ssltest/analyze.html?d=secure.o3i.international

The test looks normal.

P.S. your keychain looks a little bit… loss.
You can follow Mozilla’s key suggestions
https://ssl-config.mozilla.org/

Thank you

3

Hi @o3illc

checking your domain Tls.1.1 and Tls.1.0 is inactive - https://check-your-website.server-daten.de/?q=secure.o3i.international#connections

Do you use a new iOS or a too old version?

Check your domain with Ssllabs.

Then you see that some older iOS are blocked.

PS: @stevenzhu has the check:

Safari 5.1.9 / OS X 10.6.8 Protocol mismatch (not simulated)
Safari 6.0.4 / OS X 10.8.4 R Protocol mismatch (not simulated)

PS: There is no chain error (sometimes a problem).

4

Thank you,

I’m using the latest version iOS on my iPhone.

5

What's your iPhone version?

6

I’m running 12.4.1. I’m running an upgrade to see if that may fix the issue.

7

That’s weird.
When you connect to the website, do you have error message or something?
Can you share a screenshot of error message if possible?

Thank you

8

Ah, in the last days, I've added something. Your Grade isn't longer Grade A, instead, it's Grade B.

Why?

B https://secure.o3i.international/ 64.146.142.204
200
max-age=31536000;
Critical: HSTS-Header has Parse-Errors wrong ending semicolon found

But I don't know if this is a critical iOS-error.

Remove the ; at the end and check, what happens.

The Ssllabs - check has two things: Your Cipher suites are very restricted. And

spdy/3.1

is used, perhaps that's buggy.

Try to disable that.

9

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