Enable trace logging for the com.lawson.security.encryption package in SecurityLoggerConfiguration.xml (or, if you want to narrow the logging scope further, enable logging for the com.lawson.security.encryption.CipherSuites class).
For examples of SecurityLoggerConfiguration.xml modfications, see the section "Sample SecurityLoggerConfiguration.xml Modifications".
Restart LASE.
Look for getSupportedCipherSuites in the log. The log will show the configured, supported, and default cipher suites.
Open the lsservice.properties file in LAWDIR/system.
Add a property key named server.default.ciphersuites and set its value to a comma-separated list of cipher suites you want to enable. For example:
Restart LASE (the Security Server). When you start the Security Server, the secured (HTTPS) port should allow allow communication using those cipher suites.