Since FogBugz On-Premises version 8.22.x, the system comes with Java SDK 8, which supports TLS 1.2.
Previous FogBugz versions, FogBugz For Your Server, On-Site, and Manuscript On-Premises (up to version 8.21.14) were shipped with Java 7, which does not support TLS 1.1 or TLS 1.2.
In order to use TLS 1.2, you will have to upgrade to either FogBugz On-Premises or FogBugz On-Demand. Please reach out to our Success team for a quote.
If you are installing FogBugz (version 8.21.x or older) behind an existing SSL-terminating load balancer, you need to make sure that TLS 1.0 is supported.
If you want to upgrade Java SDK from version 7 (and upgrade you FogBugz version), you might need the help of our Professional Services team. In this case please reach out first to our Success Team for a quote.