Tomcat and IIS under SSL

Hi, I'm still struggling with my SSL problem. I have connected Tomcat and IIS using the isapi_redirect and used IIS to handle SSL. In this configuration when I run load tests after a number of successful requests suddenly errors start appearing (I am using JMeter). The client gets a

Tomcat with IIS and SSL

I am trying to set up Tomcat with SSL and IIS. I have Tomcat running fine with IIS - with no Secure Sockets Layer. I have Tomcat running fine with IIS and a Secure Sockets Layer - for users inside my firewall (Cisco router): https://InternalIPAddress/webapps/servlet/TrafficCircle?gotoPage