So I tried that script from howsmyssl.com. I tried it and it said my TSL version was 1.0. I got with my host to disable 1.0 and 1.1 and enable 1.2, per my instructions from Authorize.net. When I try to run the script now, I get an error: "An error occurred in the secure channel support"
This is the same error I get in my own code for trying to talk to Authorize.net. If I change the GET to a POST, I get the same error.
If I check my TLS version through a different site, http://ssl-checker.online-domain-tools.com/, it says that TLS 1.2 is supported, and that 1.0 and 1.1 are not supported. But like I say, I still can't POST to Authorize.net (or anywhere, it would seem). My host won't help me, saying they're not programmers. I get that, but I've tried every different ServerObject to make this POST that I've seen and none work.
Any ideas?
Thanks,
Tom