FreePBX 17: VoIP PBX on Debian 12
Instale o FreePBX 17 no Debian 12 por script ou ISO, crie ramais PJSIP e planeje a migração com segurança, backup e restauração.
Debian
FrankenPHP: PHP with embedded Caddy and worker mode on Linux
FrankenPHP combines Caddy and PHP into a single binary: automatic HTTPS, HTTP/3 and worker mode. Installation on Debian and Ubuntu, classic mode, tested worker mode, Docker and precautions before migrating.
Caddy on Linux: web server with automatic HTTPS
Install Caddy on Ubuntu and Debian via the official repository and put sites and applications behind automatic HTTPS, with reverse proxy, load balancing, PHP, Docker, and plugins.
Linux users with Ansible: SSH keys, sudo and history in Git
Create, lock and remove Linux users with Ansible: passwordless SSH key, sudo via group or sudoers.d, and every change as a Git commit for auditing. Tested on Ubuntu 24.04 and Debian 13.
Filestash on Ubuntu and Debian: binary installation and comparison with File Browser
Compile Filestash from source, install the binary on Debian 13 or Ubuntu 24.04 with systemd and Nginx, and compare it with File Browser and FileBrowser Quantum to choose the right web file manager.
SSL/TLS in Postfix and Dovecot: why and how
Let's Encrypt certificate, ports 465/587/993/995, TLS 1.2 where there is a password, Dovecot 2.3 and 2.4, tests, and MTA-STS against the attack that strips STARTTLS.
DKIM and DMARC on Postfix with OpenDKIM and OpenDMARC
SPF, DKIM signing with OpenDKIM, DMARC policy, and verification with OpenDMARC on Postfix, tested on Ubuntu 24.04 and 26.04.
ISPConfig 3.3.2: Ubuntu 26.04, DMARC, and security fixes
ISPConfig 3.3.2 ships Ubuntu 26.04, DMARC on the inbound path, database backups that don't lock up tables, and fixes a SQL injection in the remote API and a privilege escalation in Fetchmail. See what changed, the 3.3.2p1 patch, and how to update safely.
Creating .deb packages for Debian and derivatives
Distributing software for Debian, Ubuntu, Mint, and derivatives without a .deb means leaving the job half done: no dependency management, clean updates, or removal without leftovers. The good news: creating a decent .deb package is easier than its reputation suggests. In this complete guide, you will go from a handcrafted package with dpkg-deb to a package … Read more
Nginx and multiple PHP versions on Debian and Ubuntu
Debian 12 ships PHP 8.2. Ubuntu 24.04 ships 8.3. Debian 13, 8.4. Ubuntu 26.04, 8.5. A real host needs all three at once: the old WordPress site, the new Laravel application, and the cron CLI. The distribution repository does not allow it. Ondřej Surý’s does. nginx comes from nginx.org — stable, pinned, without mixing … Read more