Virtualization tutorial - IT technology blog
Posted inVirtualization

How to Install and Use Lima on macOS: Create Lightweight Linux VMs with QEMU and VZ Framework as a Free Docker Desktop Alternative

Lima is an open-source tool for creating Linux virtual machines on macOS using QEMU or Apple's VZ Framework, replacing Docker Desktop completely for free. This article compares available solutions, walks through Lima installation, Docker integration, and managing multiple VMs from the command line.
Virtualization tutorial - IT technology blog
Posted inVirtualization

Deploying Proxmox Mail Gateway as a Protective Layer for Your Mail Server: A Professional Guide to Virtualizing Spam and Malware Filtering

A step-by-step guide to deploying Proxmox Mail Gateway (PMG) as a protective layer in front of an internal mail server, filtering spam and scanning for viruses using SpamAssassin and ClamAV. Covers installation, relay domain configuration, filter rule creation, and quarantine monitoring — ideal for junior sysadmins new to email security.
CentOS tutorial - IT technology blog
Posted inCentos

Production-Ready KVM/QEMU Setup on CentOS Stream 9: Bridge Network, SELinux, and firewalld Done Right

A default KVM setup is easy — but production requires more. This article focuses on three commonly overlooked areas: bridge networking with nmcli instead of the default NAT, proper SELinux context configuration instead of disabling it, and firewalld FORWARD rules to get VM traffic working. Includes remote Virt-Manager management over SSH and troubleshooting common errors.