Dial-Up Connection in ICS Does Not Prompt to Disconnect on Client

When you quit Microsoft Internet Explorer on an Internet Connection Sharing (ICS) client computer, you are not prompted to disconnect. The dial-up connection on the ICS host computer remains connected.

Quitting Internet Explorer on the ICS host computer causes a prompt to disconnect from a dial-up connection.

This behavior is by design.

The communication between the ICS host and client is a network-style peer-to-peer connection without Dial-Up Networking involved. Therefore, ICS does not disconnect the dial-up connection on the ICS host.

When you quit Internet Explorer on the ICS host, it communicates to the local dial-up connection and you are prompted to disconnect from the dial-up connection.