Case studies

Case study: detection and compliance with Wazuh (XDR/SIEM)

Agents on endpoints and servers, file integrity, log collection, vulnerability detection and automated response — the open-source Wazuh platform.

Case study: centralized monitoring with Checkmk

Physical servers, Hyper-V, VMs, switches and backups monitored centrally from Cymmunity's Hetzner servers — TLS agents, plugins, 24/7 alerts.

Case study: OPNsense + Caddy + CrowdSec, correlated decisions

CrowdSec reads both Caddy and pf firewall logs, correlates and auto-blocks — Caddyfile, acquis.yaml, bouncer, cscli.

Case study: a 2-node VMware vSAN cluster (Dell R7615)

2x R7615 (AMD, 384GB, NVMe cache + HDD capacity), witness+vCenter on a third ESXi, 2x Dell S5148F-ON network — with esxcli/PowerCLI commands.

RAID10 recovery with 6 offline disks and crashed Oracle DB

RAID10 array with 6 out of 10 disks offline and a crashed Oracle database. How we brought the controller back, rebuilt the array, and recovered the da

Consolidation: 20+ web apps from 7 machines onto a single KVM server

A client with 20+ web apps spread across 5 VMs and 2 dedicated servers, consolidated onto a single Debian server with KVM: 3 VMs, security with nginx

Redundant infrastructure across two locations: dual-ISP, L2 VPN bridge and automatic failover

Two locations connected at L2 via OpenVPN bridge (one instance per VLAN), with two ISPs per site for instant failover, a full security stack (Suricata

Case study: an accounting firm after a ransomware attack

Edge filtering (MikroTik + Q-Feeds), isolated SAGA on Hyper-V, ransomware-resistant backup and 24/7 monitoring.