WSA Security Services --> Pac File Hosting
Default will be 9001 port i leave it as it rather changing.
If WSA having P1 and P2 configured different IP, you need to point your browser to inside interface
http://insideip:9001/file.pac <<- example ( PAC File is case sensitive i have observed this).
you can check from command level
> grep
> 24 <-- 24. "pacd_logs" Type: "PAC File Hosting Daemon Logs" Retrieval: FTP Poll
> enter
> Y
> N
> Y
you can view the clients who download the PAC Fille