Help Center

How do I verify whether my server supports TLS1.2?

To test whether your server is TLS1.2 compatible, perform these instructions from a Linux desktop.  

Alternatively, here are versions of Operating Systems and Applications that commonly support TLS1.2: 

Windows  

  • Windows 7 

  • Windows Server 2008 R2+ 

 
Linux 
Linux applications are primarily dependent on the OpenSSL version installed. The examples provided are platforms where the default OpenSSL included is sufficiently new:  

  • Ubuntu - 12.04 (Precise) or better 

  • Red Hat / CentOS - v6+ 

  • Debian - 7.0 (Wheezy) 

 
OpenSSL 
This needs to be at least version 1.0.1. 

 
.NET 
Version 4.6 defaults to TLS 1.2. Version 4.5 and below require a specific flag for TLS to be set, however, for versions below 4.5 your system will still need .NET 4.5 Installed to support TLS 1.2. 
 
Java 
Version 8 (1.8) defaults to TLS 1.2. Java 7 (1.7) needs to be told to use TLS 1.2. 
 
PHP/Ruby/Node.js 
These rely mostly on OpenSSL to handle TLS needs. Check that your version of OpenSSL is at least 1.0.1. 

 

Was this article helpful
0 out of 1 found this helpful

Other resources

Ask the community

Visit Stack Overflow to join our community of developers and find the answer you need.

Contact support

Contact our support team and one of our agents will be in touch with you to answer any questions you have.

Step into the future of business messaging.

SMS and two-way channels, automation, call center integration, payments – do it all with Clickatell’s Chat Commerce platform.