بخوانید
Consider these points when deciding whether to enable ICS
WARNING #1: When you enable ICS, the network adapter connected to the local area network is assigned a static IP address of 192.168.0.1. The client computers are assigned other IP addresses in the 192.168.0.x range. These addresses may not be compatible with an existing network
WARNING #2: Don't enable ICS if any computer in your network is configured as a domain controller, DHCP server, or DNS server. Don't enable it if another computer is running ICS or Network Address Translation (NAT).
WARNING #3: To enable ICS, you must be logged on as a user that is a member of the Administrators group
WARNING #4: If you establish a Virtual Private Networking (VPN) connection while sharing a different connection, the client computers won't be able to access the Internet until the VPN connection is ended