Practical, copy-paste runbooks for secure networks & systems — MikroTik, Windows, Linux, VMware, and Wazuh. Each guide includes verification and rollback steps.
Routing, firewall, VLANs, multi-WAN, and safe change runbooks for RouterOS.
WireGuard/IPsec remote access and site-to-site guides with verification and rollback.
Defender/ASR, auditing, PowerShell automation, and admin runbooks.
Auditing local administrator memberships is a common security requirement. This script is read-only, idempotent, and suitable for production use across servers and…
High storage latency is one of the most common causes of VM performance degradation. This runbook focuses on fast, non-disruptive diagnostics before…
An “SSH connection refused” error indicates that the connection reached the host, but no service accepted it. This runbook provides a structured,…
Overview Multi-WAN failover ensures uninterrupted internet access when a primary ISP fails. This guide implements a conservative, production-safe failover using route distance…
On modern Windows systems, SNMP is deployed as a Windows Capability. In some cases, the capability appears installed, but the SNMP service…
Overview A successful WireGuard handshake does not guarantee data transfer. On MikroTik devices, this issue is almost always caused by routing, firewall,…