The PA-400 Series is a family of Palo Alto Networks ML-Powered Next-Generation Firewalls (NGFWs) that includes models such as the PA-410, PA-415, PA-415-5G, PA-440, PA-445, PA-450, PA-455, PA-455-5G, and PA-460. They are designed for: - Distributed enterprise branch offices - Retail locations - Midsized businesses - Remote and home offices Key characteristics that make them a good fit for these environments: - **Desktop form factor** with a silent, fanless design on select models, which works well in small offices and retail spaces. - **Range of performance options** so you can match firewall capacity to the size and traffic profile of each site. - **High availability support** (active/active and active/passive) to keep critical locations online. - **Optional Zero Touch Provisioning (ZTP)** to simplify rolling out large numbers of firewalls across many sites. - **Centralized management** via Panorama and Strata Cloud Manager, so security teams can manage many distributed devices from a single interface. All PA-400 models run **PAN-OS**, the same operating system used across Palo Alto Networks NGFWs. PAN-OS classifies all traffic by application, user, and content, and uses those elements as the basis for security policies. This helps improve security posture and reduce incident response times, even in smaller or remote locations that may not have dedicated security staff.

The PA-400 Series embeds machine learning (ML) directly into the firewall to help you rethink how you prevent threats and manage policies. **ML-powered threat prevention** - Provides **inline, signatureless prevention** for file-based attacks, blocking threats even before traditional signatures exist. - Identifies and immediately stops **never-before-seen phishing attempts**. - Uses **cloud-based ML** to push **zero-delay signatures and instructions** back to the firewall, so protections are updated in near real time. **IoT visibility and control** - Uses **behavioral analysis** to detect internet of things (IoT) devices on your network. - Delivers **policy recommendations** for those devices as a **cloud-delivered, natively integrated service** on the NGFW. **Automated policy recommendations** - Automates policy suggestions to **save time and reduce human error**, helping teams keep rulesets aligned with actual traffic. **Cloud-Delivered Security Services powered by Precision AI** The PA-400 Series integrates with Palo Alto Networks Cloud-Delivered Security Services, which use Precision AI and shared threat intelligence from **over 70,000 customers worldwide**. These services include: - **Advanced Threat Prevention** – Blocks known and unknown exploits, malware, spyware, and C2 traffic, including **60% more injection attacks** and **48% more highly evasive C2 traffic** than traditional IPS solutions. - **Advanced WildFire** – Uses a large malware prevention engine to stop **up to 22% more unknown malware**, turning detection into prevention **up to 180x faster** than some competitors. - **Advanced URL Filtering** – Prevents **about 40% more threats in real time** than traditional URL databases and can stop **up to 88% of malicious URLs at least 48 hours earlier** than competitors. - **Advanced DNS Security** – Provides **2x more DNS-layer threat coverage** than many competing solutions. - **Next-Generation CASB** – Gives visibility into **60,000 SaaS apps** and protects data via **28 API integrations**. - **IoT Security** – Discovers **about 90% of IoT devices within 48 hours** and applies a Zero Trust approach to those devices. Together, these capabilities help you reimagine branch and midmarket security by combining on-box ML, cloud analytics, and integrated services to address both known and unknown threats across users, devices, and applications.

The PA-400 Series is built to make it easier to deploy, connect, and manage security across many sites. **Centralized management and visibility** - Managed centrally through **Panorama** and **Strata Cloud Manager**, giving you a single interface for configuration, policy, and visibility across all PA-400 devices. - Uses **templates and device groups** in Panorama to standardize configurations and scale log collection as your deployment grows. - Exports session logs to Panorama and Strata Cloud Manager across the series; many models (PA-415, PA-415-5G, PA-440, PA-445, PA-450, PA-455, PA-455-5G, PA-460) also support **on-box session logging**. - The **Application Command Center (ACC)** provides deep visibility into applications, users, and threats. **AI-powered operations with Strata Cloud Manager** - Uses **predictive analytics** to forecast deployment health and identify capacity bottlenecks **up to seven days in advance**, helping you prevent disruptions. - Performs **AI-powered policy analysis** and real-time compliance checks against industry and Palo Alto Networks best practices. - Lets you manage configuration and security policies across **hardware and software firewalls, SASE, and all security services** for consistent enforcement. **Flexible connectivity and SD-WAN** - Supports common interface modes: **Layer 2, Layer 3, tap, and virtual wire (transparent mode)**. - Includes routing features such as **OSPFv2/v3, BGP, RIP, static routing, policy-based forwarding, and multicast (PIM-SM, PIM-SSM, IGMP v1–v3)**. - Provides **IPsec VPN** with IKEv1/v2, multiple encryption options (3DES, AES-128/192/256), and strong authentication (MD5, SHA-1, SHA-256, SHA-384, SHA-512). - Enables **SD-WAN** natively on the firewall, so you can: - Measure path quality (jitter, packet loss, latency) - Use policy-based forwarding for initial path selection - Dynamically change paths to maintain user experience **Integrated 5G for resilient branches** - Models like the **PA-415-5G** and **PA-455-5G** include an **embedded 5G cellular module**. - 5G can be used as a **backup WAN** for business-critical applications or as a **primary WAN** for mobile or hard-to-wire locations. - Supports a broad set of **5G NR Sub-6GHz (FR1)** and **LTE** bands, making it suitable for many regions and carriers. **Operational efficiency and deployment** - **Zero Touch Provisioning (ZTP)** is available to streamline large-scale rollouts. - **Single-pass architecture** processes networking, policy lookup, application decoding, and threat inspection in one pass, helping maintain **predictable performance** even when multiple security services are enabled. - Select models offer **Power over Ethernet (PoE)** ports (e.g., PA-415, PA-415-5G, PA-445, PA-455, PA-455-5G) with PoE budgets such as **91 W** or **151 W**, allowing you to power branch devices like access points or phones directly from the firewall. Overall, the PA-400 Series helps you reimagine branch and remote security by combining centralized management, integrated SD-WAN and 5G, and efficient packet processing in a compact platform that scales across many sites.