I am not used to using OS X as I normally use Windows but in my new job I have a machine with OS X 10.9.5 so I kind of have to use it.
Anyways, I need to open port 25443 as I need it to access a website that runs there. I am not using the OS Firewall. I've been reading about it and I tried ipfw but it seems to be deprecated. I've been looking into pfctl but no luck. How could I open that port?
These are the outputted messages in different browsers:
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Safari:
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Chrome:
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Opera:
The website is on a server in the Internet, is not accessed locally
I've tried to access other websites using HTTPS. It doesn't show any error and it show without any problem.
Best Answer
Router/Firewall settings
As your site loads fine for other SE users, even with OS X firewall activated, it is most likely that you are behind some sort of company firewall.
Try another network, like tethering from your phone, to see if this solves your issue.