Index: activemq-core/src/main/java/org/apache/activemq/transport/tcp/SslTransportServer.java
===================================================================
--- activemq-core/src/main/java/org/apache/activemq/transport/tcp/SslTransportServer.java	(revision 646691)
+++ activemq-core/src/main/java/org/apache/activemq/transport/tcp/SslTransportServer.java	(working copy)
@@ -106,8 +106,15 @@
      */
     public void bind() throws IOException {
         super.bind();
-        ((SSLServerSocket)this.serverSocket).setWantClientAuth(wantClientAuth);
-        ((SSLServerSocket)this.serverSocket).setNeedClientAuth(needClientAuth);
+        if (wantClientAuth && needClientAuth) {
+            throw new IOException("Invalid transport URL, you can not specify both wantClientAuth and needClientAuth.");
+        }
+        if (wantClientAuth) {
+            ((SSLServerSocket)this.serverSocket).setWantClientAuth(wantClientAuth);
+        }
+        if (needClientAuth) {
+            ((SSLServerSocket)this.serverSocket).setNeedClientAuth(needClientAuth);
+        }
     }
     
     /**