Logging

FTL server has the ability to log events related to security. The loglevel should be specified in the ftlserver.properties section of the yaml configuration file. For the configuration reference, see "loglevel" in FTL Server Configuration Parameters

To log authentication results for incoming connections from clients or other FTL servers, set the loglevel to auth:verbose.

To log TLS configuration parameters and the establishment of TLS connections, set the loglevel to tls:verbose.

Logging components may be combined with a semicolon as delimiter.

For example, the loglevel can be set to "auth:verbose;tls:verbose".

Elevated logging is not recommended for deployments with many short-lived, recurring connections. The best practice is to develop applications with long-lived connections to FTL server.