Windows Documentation

Network Security Overview

Network security in Windows protects data, devices, and services from unauthorized access and attacks. This guide covers the core components, best practices, and configuration steps to secure Windows-based networks.

Secure Protocols

Implement TLS, HTTPS, and SMB encryption to safeguard data in transit.

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Windows Defender Firewall

Configure inbound and outbound rules, profiles, and advanced settings.

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Network Access Protection (NAP)

Enforce health policies for devices connecting to the network.

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IPsec Configuration

Secure IP communications using IPsec policies and certificates.

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Network Isolation & Segmentation

Design network zones and VLANs to limit lateral movement.

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Quick Reference

Feature Default State Recommended Setting
Windows Firewall Enabled (Domain) Enabled (All Profiles)
SMB Encryption Disabled Enabled for SMB3+
IPsec Optional Enforced for Critical Services