Recommendations for SOHO or Homelabs

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Saftey first: Firewall Application SOHO – (Unfortunatly going EOL soon, searching for alternatives)
PCEngines boards (APU2)
Usable with a varitey of Firewall OS, like OPNSense®, pfSense CE® or juat a plain (headless) Linux.
Availible in different varities (2, 3 or 4 NIC; combined with WiFi/4G-LTE; size of flash).
Perfect for homelabs or SOHO environment.
Choose your own flavor ;-)
Saftey first: Enterprise Firewall Applications
Scope7 OpenSource Firewall Applications
Usable with a varitey of Firewall OS, like OPNSense®, pfSense CE® or just a plain (headless) Linux.
Availible in different varities for different use cases.
I have made very good expieriences with these devices. Very reliable and powerful.
Virtualization: Free(CE) Hypervisor and most powerful
ProxmoxVE (CE)
Debian based and easy to use for Enterprise and SOHO environment.
Very strong community and professional (Enterprise) support availible.
Can be run on most of availible (e.g. fanless mini) PC's according to your own desires.
HA and clustering possible. Ceph and iSCSI supported.
Monitoring: avoiding issues beforehand
CheckMK
OpenSource Monitoring with most powerful features.
Extendable with plugins, API and also distributed monitoring.
Enterprise (if needed) and OpenSource versions availible.
Dedicated Server @Homelab/SOHO
Use a RaspberryPi
Some solutions need a dedicated server.
For testing (and some production) purposes a RasPi is fine.
Here are some nice solutions for usage.
Small useful adjustments / little helpers
little helpers
Some small useful helpers and cheats for used devices.
All nice to have and not a must.
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Enterprise not excluded ;-)