mongod -f /opt/users/mongodbx/configs/f0ata.conf --setParameter enableTestCommands=1

$ cat /opt/users/mongodbx/configs/f0ata.conf  (snippet below)
net:
     bindIp: 1:2:3:4
     port: 29000
     ssl:
        mode:       requireSSL                    
        PEMKeyFile: /opt/users/mongodbx/ssl/mongodb.pem 
        CAFile:     /opt/users/mongodbx/ssl/ca.pem
        weakCertificateValidation: true           
        clusterFile: /opt/users/mongodbx/ssl/mongodb.pem
security:
       authorization: enabled                    
       clusterAuthMode: x509 

mongo --host az2-labs-esx2-app3:29000 --ssl admin
MongoDB shell version: 2.6.4
connecting to: az2-labs-esx2-app3:29000/admin
rs_fata:PRIMARY> use anytoany
switched to db anytoany
rs_fata:PRIMARY> show collections
2014-12-02T14:19:02.317-0700 error: {
        "$err" : "not authorized for query on anytoany.system.namespaces",                
        "code" : 13                                  
} at src/mongo/shell/query.js:131                             <= as expected.
rs_fata:PRIMARY> db.runCommand( { emptycapped: "event"} ) 
{ "ok" : 1 }  <= Notice not authenticated !!                                                               
rs_fata:PRIMARY> show collections
2014-12-02T14:19:50.035-0700 error: {
        "$err" : "not authorized for query on anytoany.system.namespaces",
        "code" : 13
} at src/mongo/shell/query.js:131  <= expected though.

rs_fata:PRIMARY> use admin
switched to db admin
rs_fata:PRIMARY> db.auth("mongodba","********")
1
rs_fata:PRIMARY> use anytotany
switched to db anytotany
rs_fata:PRIMARY> db.event.count()
0                      <= works as expected since user is authenticated.