The knowledge base covers common enterprise issues involving Active Directory, Windows Server, networking, virtualisation, databases, backup and storage, with practical guidance for production environments.
Topics include identity and access, connectivity, server platforms, virtual desktops, data protection and legacy-system operations, allowing teams to locate guidance by incident scenario.
Practical articles based on real enterprise incidents, covering Active Directory, Windows Server, file permissions, VPN, firewall, virtualisation, Veeam, NAS, SQL Server and legacy systems.
Separate name resolution, TCP 445 connection, directory enumeration, first-file open, and sustained transfer, then compare storage latency, real-time scanning, and file-count effects.
Read the full article →Prefer upgrading the device to authenticated access, SMB signing, and supported protocols. Any temporary compatibility exception should be limited by device, subnet, permission, and duration.
Read the full article →Compare default routes, interface metrics, DNS, egress location, path MTU, and corporate bandwidth before deciding whether split tunnelling is appropriate.
Read the full article →Check client DNS, suffix search, A and AAAA records, caches, hosts overrides, VPN DNS routing, and whether the application uses a short name or FQDN.
Read the full article →A successful TCP test proves only listener reachability. The application may still fail because of binding, TLS, authentication, database, licensing, dynamic ports, NAT, or the return route.
Read the full article →DNS resolution and web access are separate traffic flows. Allowing recursive DNS does not automatically open ports 80 or 443, but endpoint gateways, proxies, DoH, and other egress paths must still be checked.
Read the full article →Browser and service proxy paths differ. Compare WinINET, WinHTTP, PAC or WPAD, Group Policy, and security software to determine whether the proxy is repeatedly reapplied.
Read the full article →Correlate Client, Agent, Connection Server, and firewall timestamps, then verify the display protocol, loss and jitter, MTU, proxy path, and session timeouts.
Read the full article →Control client-drive redirection, file transfer, clipboard, and drag-and-drop separately, and verify that mapped drives cannot provide an unintended reverse path.
Read the full article →Every domain member requires a unique computer identity. Duplicate hostnames can overwrite DNS, reuse computer objects, break secure channels, and confuse management platforms.
Read the full article →ZFS needs direct visibility of disks, SMART data, and error states. An HBA or JBOD mode is usually preferred, followed by vdev design based on performance, capacity, and rebuild windows.
Read the full article →Combine immutable copies, offline or isolated copies, separate credentials, least privilege, recovery testing, and alerting rather than relying only on online NAS snapshots.
Read the full article →Verify the SQL instance and actual port, authentication mode, login status, default database, client driver, TLS, aliases, and the application connection string.
Read the full article →Legacy clients may depend on old TLS, 32-bit drivers, Named Pipes, server aliases, or obsolete runtimes. Inventory and test those dependencies before weakening server security globally.
Read the full article →Align client and print-server updates, review Print Spooler logs, driver architecture, Point and Print restrictions, and RPC security settings without permanently disabling protections.
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