@root.visual50: one infected laptop should never be able to reach every server, database, and backup in the company. but on a flat network — that's exactly what happens. network segmentation divides a network into isolated zones. a breach in one zone hits a firewall boundary before it can spread to others. it's the single most effective architectural control for containing a breach. VLANs (Virtual LANs) create these zones logically: corporate workstations, guest WiFi, servers, IoT devices, and management tools each get their own segment. traffic between them routes through a firewall that inspects it. the key principles: isolate high-value systems (servers, backups, domain controllers), quarantine low-trust devices (IoT, cameras, guests), and keep backups unreachable from user workstations — critical during a ransomware attack. segmentation doesn't prevent breaches. it stops them from becoming catastrophes. save this. this is how real networks contain damage. #networksecurity #vlan #cybersecurity #rootvisual

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Saturday 20 June 2026 15:47:11 GMT