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 This tutorial covers How to Secure MySQL on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: zypper refresh && […]
Introduction This tutorial covers How to Configure MySQL Replication on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: zypper refresh […]
Introduction This tutorial covers How to Install MariaDB on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Install MariaDB zypper install -y mariadb mariadb-server Step 2 — […]
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 This tutorial covers How to Install MySQL 8 on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Install MySQL zypper install -y mysql-server Step 2 — […]
Introduction to NTLM Security NTLM (NT LAN Manager) is a challenge-response authentication protocol used by Windows when Kerberos is not available—for example when accessing resources by IP address instead of hostname, in workgroup environments, or when connecting to legacy systems. While Kerberos is the preferred protocol, NTLM is still present in virtually all Windows environments […]
Introduction to Kerberos Authentication Kerberos is the default authentication protocol for Windows domain environments. Introduced with Windows 2000 and continually improved in Windows Server 2019, Kerberos provides mutual authentication—both the client and the server verify each other’s identity—and uses tickets rather than transmitting passwords over the network. Understanding Kerberos is essential for troubleshooting authentication failures, […]
Introduction to RADIUS Authentication RADIUS (Remote Authentication Dial-In User Service) is a networking protocol that provides centralized authentication, authorization, and accounting (AAA) for network access. Windows Server 2019 implements RADIUS through the Network Policy Server (NPS) role. NPS acts as a RADIUS server that authenticates users trying to connect via VPN, wireless access points, 802.1X […]
Introduction to Read-Only Domain Controllers A Read-Only Domain Controller (RODC) is a domain controller that hosts a read-only copy of the Active Directory database. RODCs were designed specifically for branch office scenarios where physical security cannot be guaranteed. If an RODC is stolen or compromised, the damage is limited because it holds no writable copy […]
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