AlmaLinux OS vs pfSense

AlmaLinux OS is a free, open-source, community-owned enterprise Linux distribution designed for binary compatibility with RHEL. The project presents it as an option for users who need enterprise Linux without a commercial license agreement, including people seeking a CentOS Linux replacement. It can run on servers, workstations, virtual machines, cloud instances, containers, Raspberry Pi devices and Windows Subsystem for Linux environments. ISO downloads cover x86_64, aarch64, ppc64le and s390x architectures. The project also provides cloud images, OCI, Docker and UBI-compatible container images, Vagrant images, and live media with several desktop choices. A WSL image provides a terminal environment on Windows. The Foundation publishes security and bug-fix errata, and packages are GPG-signed and verified by default when installed. OpenSCAP, SCAP Workbench, OVAL streams and CIS tooling are available for auditing or hardening systems. Community support is available through forums, chat and Reddit; commercial support is offered separately by listed providers. The project plans stable updates and security patches for 8.x until 2029 and 9.x until 2032.

pfSense is a free, open-source firewall and router distribution based on FreeBSD, managed through a web interface. Its firewall uses stateful packet inspection and can block traffic based on policy matches. Routing features include policy-based routing, static routes, and concurrent IPv4 and IPv6 support. Security options include IDS/IPS, Snort packet analysis, Suricata rules, IP block lists, and application detection. It supports IPsec, OpenVPN, and WireGuard for site-to-site and remote-access VPNs. The software can run on selected hardware, virtual machines, and cloud instances, and is available in the Azure and AWS Marketplaces, including their US GovCloud regions. The Community Edition is free and open source. pfSense Plus on third-party hardware starts at $129 a year; on Netgate appliances it starts at $189, paid once, with the software included at no charge with an appliance. The USB installer overwrites the entire hard drive and does not support dual booting.