To enable or disable ICF

1. Open Network Connections.
2. Under Dial-up or LAN or High-Speed Internet, right-click the connection that you want to protect, and then click Properties.
3. On the Advanced tab, under Internet Connection Firewall, do one of the following:
• To enable Internet Connection Firewall (ICF), select the Protect my computer and network by limiting or preventing access to this computer from the Internet check box.
• To disable ICF, clear the Protect my computer and network by limiting or preventing access to this computer from the Internet check box.

Caution

• If you clear the Protect my computer and network by limiting or preventing access to this computer from the Internet check box, the firewall on this connection is disabled. When the firewall is disabled, your computer is exposed to possible external attacks through the unprotected connection.

Notes

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• You need to enable ICF only on connections that connect to the Internet. You should not enable ICF on virtual private network (VPN) connections or on network client computers because ICF interferes with network activities such as file and printer sharing.
• If ICF is enabled on two or more connections on a single computer, the ICF settings are global. If you select a setting or change a setting in Logging Options or Services on any one of the connections on which ICF is enabled, that setting is applied to all of the ICF firewalls on that computer.
• ICF cannot be enabled on the private connections of the Internet Connection Sharing host computer, on Network Bridge, or on the adapters that are included in Network Bridge.
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