WCF Security Debugging Trick

Not infrequently, while deploying my WCF web services to various dev and QA environments I run into security issues, where for some reason I can’t get authenticated.  I recently found an article that (WCF: "An error occurred when verifying security for the message." and Service Security Audit) that talks about how to get more info on these errors logged in the application log using the following serviceSecurityAudit behavior:

<serviceSecurityAudit 
	auditLogLocation="Application"
	serviceAuthorizationAuditLevel="Failure"
	messageAuthenticationAuditLevel="Failure"
	suppressAuditFailure="true"/>