Please see the following documentation on this.
https://glassfish.dev.java.net/javaee5/docs/DG/beabg.html#beabs
glassfish_at_javadesktop.org wrote, On Thursday 02 August 2007 10:26 PM:
> How would I either extend the JDBC realm or create a custom realm to add a couple extra features like account lockout for too many authentication tries.
> [Message sent by forum member 'amattas' (amattas)]
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> http://forums.java.net/jive/thread.jspa?messageID=229221
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