You can: Create a new rule. Click New > New Firewall Rule. Import a rule from an XML file. Click New > Import From File. Copy and then modify an existing rule. Right-click the rule in the Firewall Rules list and then click Duplicate. To edit the new rule, select it and then click Properties. Click to see full answer. Considering this, what are the firewall rules? Firewall rules: Determine what traffic your firewall allows and what is blocked. Examine the control information in individual packets, and either block or allow them according to the criteria that you define. Control how the firewalls protect your network from malicious programs and unauthorized access. Furthermore, what are the four basic types of firewall rules? Four basic types of firewall protection exist–network level, circuit level, application-level and stateful multilayer. Moreover, how do I add a firewall? Click Start and select Control Panel. Double-click Windows Firewall to open the Windows Firewall window. Click the Exceptions tab. Click the Add Port button.What are the 3 types of firewalls?There are three basic types of firewalls that are used by companies to protect their data & devices to keep destructive elements out of network, viz. Packet Filters, Stateful Inspection and Proxy Server Firewalls. Let us give you a brief introduction about each of these.