For more information about origin of this issue see JBEAP-13856.

I found out that there is a change between Artemis 1.x and 2.x in what it is passing into the WildflySecurityManager. Instead of username=null and password=null, it is passing:

username="CN=hornetq,OU=Red Hat,O=Red Hat,L=Unknown,ST=Unknown,C=Unknown; SSL certificate subject DN: CN=hornetq, OU=Red Hat, O=Red Hat, L=Unknown, ST=Unknown, C=Unknown"
password="" // empty string

The change is caused by this Artemis commit - https://github.com/apache/activemq-artemis/commit/cda1e018e1bd7ccd85d6ffd2333fc910b67febf5#diff-3477fe0d8138d589ef33feeea2ecd28eR493

Customer impact: SSL configured on remote connectors/acceptors is not working.