Below is a sample URL that you can use to model your site specific URL that allow you to logon to the CA 7 Web Client without entering the host name and port information every time.
The standard URL to access the CA 7 Web Client would look like the following and you will get logon screen and must enter the username, password, hostname and port:
http://sys1:55551/ca7wai_appl/ca7wai
By adding 2 variables below pointing to your hostname and port for the CA7SRVR task, you will not need to enter the username and password:
?hostname=sys1
&port=55554
http://sys1:55551/ca7wai_appl/ca7wai?hostname=sys1&port=55554