Matteo Sicilia - Blog https://pinocembro.it/blog/ Blog entries from Matteo Sicilia. en Tue, 09 Jun 2026 00:00:00 GMT Hardening SSH on Debian https://pinocembro.it/blog/hardening-ssh-debian/ https://pinocembro.it/blog/hardening-ssh-debian/ Tue, 09 Jun 2026 00:00:00 GMT A practical SSH hardening baseline for Debian servers. linux security sysadmin VLAN lab notes from a small campus-style network https://pinocembro.it/blog/vlan-lab-notes/ https://pinocembro.it/blog/vlan-lab-notes/ Thu, 04 Jun 2026 00:00:00 GMT Lessons from mapping access ports, trunks, and firewall boundaries in a lab network. networking security university