Authorize.net Requirements

[MessEleven]

After February 28, 2018, Authorize.net will no longer recognize TLS 1.0 or TLS 1.1. The system will only accept TLS 1.2. Is the current Authorize extension (AIM) compliant with this requirement?

[abolabo]

Support of TLS versions relates to openSSL library that works under php.
AbanteCart extensions uses curl for connection to payment gateways and curl uses openssl for connection encryption.
To know is your openssl supports TLS 1.2 check it's changelog

[MessEleven]

So please correct me if I misunderstand this. What you're saying is that the Authorize extension (AIM) is related to the changelog you gave me, which says it's not up to 1.2 at this point. That means the gateway will not work after February. Correct?

[abolabo]

No. Cause with TLS is NOT in Authorize.net extension. It's in connection encryption.
You should to check your openSSL library TLS support.

Just go to admin->settings->system and click button PHP info at the heading.
Then find version of OpenSSL and check it in change log i gave.

[MessEleven]

Thanks for your quick response! Unfortunately, when I click PHP Info, I only get a blank page. Nothing else loads.

[abolabo]

probably your hosting providers blocked this functionality. You can ask them or try to find phpinfo inside your CPanel account

[MessEleven]

Ok, will do. Thanks again!

[llegrand]

It occurs to me you may have some confusion about what TLS is - here's a link to an article that explains it well
http://www.hostingadvice.com/how-to/tls-vs-ssl/

and there are many ssl/tls checkers available online to see what your server is reporting - 
https://geekflare.com/ssl-test-certificate/
lists several

I use this one alot

https://sslanalyzer.comodoca.com/

or this one with a bit more in depth  details.

https://www.htbridge.com/ssl/