![]() ![]() On the Name page, type a name and description for your rule, and then click Finish. On the Profile page, select the network location types to which this rule applies, and then click Next. On the Action page, select Block the connection, and then click Next. Configure as appropriate for your design, and then click Next. On the Scope page, you can specify that the rule applies only to network traffic to or from the IP addresses entered on this page. When you have configured the protocol and port options, click Next. For more information about the protocol and port options, see Create an Outbound Port Rule. If the program tries to send to or from a port number different from the one specified here, or by using a protocol number different from the one specified here, then the default outbound firewall behavior allows the traffic. Steps to Block All Outgoing Connections in Windows Firewall TutorialWindows Firewall is the default software firewall of the Windows operating system. On the Protocols and Ports page, you can specify the port numbers or protocol numbers for the blocked traffic. If you want the program to be allowed to send on some ports, but blocked from sending on others, then you can restrict the firewall rule to block only the specified ports or protocols. ![]() If the service does not appear in the list, then click Apply to service with this service short name, and type the short name for the service in the text box. If the executable file is a container for a single service or contains multiple services but the rule only applies to one of them, click Customize, select Apply to this service, and then select the service from the list. If the executable file is a container for multiple services that must all be blocked from sending outbound network traffic, click Customize, select Apply to services only, click OK, and then click Next. If the executable file contains a single program, click Next. Use environment variables as appropriate to ensure that programs installed in different locations on different computers work correctly. Type the path to the program in the text box. On the Program page, click This program path. If you select Custom, you see all of the pages, and have the most flexibility in creating your rules. Note: Although you can create many rules by selecting Program or Port, those choices limit the number of pages presented by the wizard. ![]() On the Rule Type page of the New Outbound Rule Wizard, click Custom, and then click Next. In the navigation pane, click Outbound Rules. Open the Group Policy Management Console to Windows Defender Firewall with Advanced Security. To create an outbound firewall rule for a program or service To complete these procedures, you must be a member of the Domain Administrators group, or otherwise be delegated permissions to modify the GPOs. This type of rule prevents the program from sending any outbound network traffic on any port. To block outbound network traffic for a specified program or service, use the Windows Defender Firewall with Advanced Security node in the Group Policy Management console to create firewall rules. By default, Windows Defender Firewall allows all outbound network traffic unless it matches a rule that prohibits the traffic. ![]()
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