{"id":127,"date":"2026-08-25T18:23:53","date_gmt":"2026-08-25T18:23:53","guid":{"rendered":"https:\/\/nceducations.com\/blog\/?p=127"},"modified":"2026-08-25T18:23:53","modified_gmt":"2026-08-25T18:23:53","slug":"what-is-palo-alto-firewall","status":"publish","type":"post","link":"https:\/\/nceducations.com\/blog\/what-is-palo-alto-firewall\/","title":{"rendered":"What is Palo Alto Firewall?: How It Work, Models Comparison, Role in Cyber Security, Hardware, Price in India 2026"},"content":{"rendered":"

A Palo Alto firewall is a next-generation firewall (NGFW) built by Palo Alto Networks that classifies network traffic by the actual application and user identity involved, rather than by port and protocol alone. It runs on the vendor’s PAN-OS operating system and inspects traffic once, in a single pass, using three core engines – App-ID, User-ID, and Content-ID – to apply security policy, detect threats, and control application behaviour at the same time.<\/span><\/p>\n

That’s the short answer. The rest of this guide covers how that architecture actually works, what makes it different from a traditional firewall, which form factors and deployment modes exist, and how the certification path for learning the platform has changed.<\/span><\/p>\n

This article is written for readers who already understand basic networking and firewall concepts (zones, ACLs, stateful inspection) and want a clear, accurate picture of how Palo Alto’s platform specifically works – not a marketing overview.<\/span><\/p>\n

Why Palo Alto Firewalls Are Called “Next-Generation”?<\/b><\/h2>\n

Traditional stateful firewalls make allow\/deny decisions primarily using source and destination IP addresses, port numbers, and protocol. That worked when applications reliably used predictable ports – HTTP on port 80, for example. It breaks down when applications tunnel over common ports, hop between ports, or hide inside encrypted traffic, which is now the normal case for most business and consumer software.<\/span><\/p>\n

Palo Alto Networks built its firewalls around a different premise: identify the actual application and the actual user, regardless of port, protocol, or encryption, and make policy decisions based on that identity.<\/span><\/p>\n

<cite index=”17-1,17-2″>App-ID uses multiple identification techniques to determine the exact identity of applications traversing the network, including ones that try to evade detection by masquerading as legitimate traffic, hopping ports, or using encryption.\u00a0 Itt works alongside User-ID so administrators always know who is using what on the network.\u00a0<\/span><\/cite> That combination – application identity plus user identity plus content inspection is the core of what “next-generation firewall<\/strong>” means for this platform.<\/span><\/p>\n

Palo Alto Firewall Uses?<\/b><\/h2>\n

The funtional working of a Palo Alto firewall<\/a> are listed below:<\/span><\/p>\n