I can confirm that the features the OP requested do not exist in gnome- control-center 1:3.4.2-0ubuntu0.2. I suggest importance "Wishlist" here.
** Changed in: gnome-control-center (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1006749 Title: 'No/bypass proxy for' option is missing in Ubuntu 12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1006749/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs