NetScaler - Use Source IP

The NetScaler can be a wonderful tool with all of its capabilities, but sometimes that can be a double-edged sword. The ever changing demands that IT personnel go through each day can be exciting and rewarding but sometimes leads to confusion. Today was a perfect example of this for me.

I have been attempting to get a SharePoint site externally available. I am doing this using the NetScaler and its SSL features. I have added the Server, Service, and Server in to the Load Balancing feature. After checking to make sure my responder policies/action were correct, I attempted to test the setup using my host file. I got the forever annoying, "Internet Explorer cannot display the webpage" message.

This is when I remembered the "Use Source IP" check box of the Load Balancing Service. This check box has singled markedly cause me hours of frustration and confusion. It forces the client's response to come from the Client's IP address rather than responding back to the NetScaler. I unchecked this and the Client no longer goes directly to the server when it responds, which fixed my problem.

tl;dr
Uncheck the "Use Source IP" check box which can be found in the Service configuration screen.

Uncheck "Use Source IP"

More info from Citrix below:
http://support.citrix.com/proddocs/topic/ns-system-10-1-map/ns-nw-ipaddrssng-enabling-use-src-ip-mode-tsk.html