Question to SNI - Web Proxy

[ruggerio]

Hi,

I tried a long time with SSL-Inspection, unfortunately i have 2 sites, which i don't get working. But i've been warned many times. 

So i decided to go back to SNI.

What is the connection-concept of SNI? Does it still use Port 3129? Or is it enough to mark "Verify SNI" and leave  "use SSL" unchecked? I would prefer having the complete traffic just over port 3128.

Is that possible?

Thx,
Roger