Thank @Jeffrey Drumm 
It was set to 1.

What I have done is take the CSP.INI file of the Apache server and delete the lines for Username and Password and try to reconnect.

I now got the Web Gateway Management Page :-- http://localhost:57772/csp/bin/Systems/Module.cxw -).  So I have an interface. 

I reentered the username and password. For  the record my passwords are generated but (I am assuming) if they work on the IIS version of CSP Gateway it should work on the inbuilt one.

Connecting to the server gives: Server Availability Error / Server is currently unavailable 

I will see the audit and update

I reset the password and it is working.  Still baffled why it worked on one interface but not the other.

Thanks everyone