Introduction to DNS Logging and Diagnostics on Windows Server 2019 DNS logging and diagnostics are essential for troubleshooting resolution failures, detecting security threats, meeting compliance requirements, and understanding traffic patterns on your network. Windows Server 2019 provides two distinct logging mechanisms for DNS: the Windows Event Log (structured event data, always on) and the DNS […]
Introduction to DNS Policies on Windows Server 2019 DNS Policies, introduced in Windows Server 2016 and fully supported in Windows Server 2019, allow the DNS server to make intelligent decisions about how to respond to queries based on criteria such as the client’s IP address or subnet, the time of day, the query type, or […]
Introduction to DNS over HTTPS on Windows Server 2019 DNS over HTTPS (DoH) encrypts DNS queries inside standard HTTPS traffic on port 443. Traditional DNS queries travel in plaintext over UDP or TCP port 53, exposing every hostname lookup to anyone monitoring the network — ISPs, attackers on public Wi-Fi, or enterprise security appliances. DoH […]
Introduction to DNSSEC on Windows Server 2019 DNSSEC (Domain Name System Security Extensions) adds cryptographic signatures to DNS records, allowing resolvers to verify that responses are authentic and have not been tampered with in transit. Without DNSSEC, a resolver has no way to distinguish a legitimate DNS response from a forged one injected by a […]
Introduction to DNS Security on Windows Server 2019 DNS is foundational infrastructure — every name resolution request on your network passes through it. A misconfigured or compromised DNS server can redirect traffic, enable phishing attacks, or facilitate data exfiltration. Windows Server 2019 includes several built-in features to harden DNS, including DNSSEC, Response Rate Limiting (RRL), […]
Introduction to Attack Surface Reduction Rules Attack Surface Reduction (ASR) rules are a set of targeted security policies in Windows Defender on Windows Server 2019 that block specific behaviors commonly used by malware and attackers—without requiring signature-based detection. ASR rules target abuse of Office macros, script execution techniques, credential theft from LSASS, exploitation of email […]
Introduction to Exploit Protection Exploit Protection is a Windows Defender feature in Windows Server 2019 that applies exploit mitigation techniques to operating system processes and individual applications. It is the successor to Enhanced Mitigation Experience Toolkit (EMET) and provides a comprehensive set of memory protection, code execution prevention, and anti-exploit technologies. Exploit Protection mitigations make […]
Introduction to Windows Defender Application Control Windows Defender Application Control (WDAC) is Microsoft’s next-generation application control technology, introduced in Windows 10 and fully supported on Windows Server 2019. Unlike AppLocker, which operates in user space, WDAC policies are enforced by the Windows kernel and can be protected by Virtualization-Based Security (HVCI). WDAC supersedes Device Guard […]
Introduction to AppLocker AppLocker is an application whitelisting feature in Windows Server 2019 (Enterprise and later editions) that allows administrators to control which applications, scripts, installers, and DLLs are allowed to run based on configurable rules. Unlike software restriction policies (its predecessor), AppLocker is rule-based, auditable, and can be managed through Group Policy and PowerShell. […]
Introduction to Device Guard Device Guard is a set of hardware and software security features in Windows Server 2019 that locks down a device to run only trusted applications and drivers. It consists of two main components: Virtualization-Based Code Integrity (HVCI, also called Memory Integrity), which uses Hyper-V to protect the kernel from unsigned or […]
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