
Next-generation firewalling: inspection, IPS and segmentation — the perimeter that sees the applications, not just the ports.
Secure Firewall (Firepower) thinks in applications and users, not just IPs and ports: it recognizes the traffic, inspects it (Snort IPS, malware, TLS), applies policies by identity and blocks what Talos — one of the largest threat intelligences in the world — has already seen elsewhere. From the perimeter to the data center, centrally managed.


The legacy firewall has archaeological rules: the migration is the chance to understand and prune.
The perimeter isn't enough: the internal zones (servers, clients, OT) separated and inspected.
TLS inspected where it counts, excluded where it mustn't be (banking, healthcare): the balance is policy.
The events in the monitoring flow: the firewall as a sensor, not just as a wall.
Secure Firewall (FTD) combines stateful firewalling, Snort 3 IPS, malware defense and URL filtering: the policies are written on applications and users (not ports), TLS decryption (selective too, with dedicated hardware on the 4200s) restores visibility on encrypted traffic, Security Intelligence blocks via Talos feeds, management is FMC (on-prem) or cloud (cdFMC); the multithreaded Snort 3 raises the IPS throughput.
Internet edge with IPS and application control.
The segmentation of the critical servers.
The control evidence for NIS2 and audits.