Access Plesk 11.5 via subdomain

[Michael_ J_Herm]

I am trying to work out a way to access Plesk via a subdomain such as https://plesk.example.com/ so that I do not need to access it through the port (8443). I need to do this because networks I am on frequently block non-standard ports (such as 8443). I have managed to create a subdomain with a vhost to do a ProxyPass using the port and I can get in Plesk Panel if I am on a network not blocking 8443 but when I am on a network that blocks 8443 and go to my subdomain the single sign on page redirects at one point to IP.IP.IP.IP:8443 breaking my ProxyPass. Does anyone know how I can get my traffic flowing through the subdomain completely?

Thanks

 

[Michael_ J_Herm]

Or can someone point me in the right direction for using this guide for 11.5? http://kb.parallels.com/en/1694