Windows Firewall enables administrators to create detailed, granular firewall rules. These rules can specify ports, protocols, applications, and network locations to control which traffic is allowed or blocked. This level of customization helps ensure only authorized network communications occur on the device.
Types of Windows Firewall Rules
1. Inbound Rules
Control traffic entering a device
Typically used to block unsolicited access
Common for servers, but equally important on client systems
2. Outbound Rules
Govern what traffic leaves the device
Useful for preventing unauthorized data exfiltration or unwanted applications communicating externally
3. Connection Security Rules
Specify authentication or encryption (IPsec) requirements for secure communication