Block HTTP Access

[rusty73]

Hi, I have Wingate server 4.5.2 and client work with in this Way
Proxy Web on port 3128
POP3 on port 26
SMTP on port 111.

I like to block access of client only to web, but not only to work with the client's browser.

Any helps?

Thank's

[rusty73]

It's possibile to work only give access to Users or also to client with IP address?
Thank's