TLS version

For all incoming traffic between authorized apps and the ION API Gateway, only TLS version 1.2 is supported; however, for outbound communication between the Gateway and target APIs, ION API is more accommodating. As tenant administrator, you can set a minimum TLS version for target endpoints from the General Settings tab.

The versions available are:

• 1.0
• 1.1
• 1.2
• 1.3

The default value supported is the lowest version: 1.0.

Once the minimum TLS version is set, all target APIs using a lower TLS version will fail.

Additionally, when the minimum TLS version is updated from the General Settings page, endpoints that were recently called still use the previous TLS version until the cache is cleared for that endpoint.