How to configure web-filtering?

Hello all, 

I have a problem regarding of web-filtering.

I've used a filrewall : ISG-1000.

I already know that ISG-1000 do not support to block HTTPS(443).

So, I decided that I have to block URL by configuring white-list method like below picture.

(Please concentrate REDsquare)



I'll try to configure like RED square.

Please confirm whether this method can do well or not.?

1. V1-Trust -> V1-Untrust : Source(SN_Network), Destination(white-list)

2. V1-Untrust -> V1-Trust : Source(white-list), Source(SN_Network)

*SN_Network : The IPs we use

*white-list : The IPs and URLs we'll block.

Regards,