Best Network Security Software (2026): Top 10 Compared

Palo Alto Networks sells network security as a platform of next-generation firewalls, a SASE service and a catalogue of cloud-delivered security subscriptions. Its firewall page states that the company was named a Leader in the 2026 Gartner Magic Quadrant for Hybrid Mesh Firewall and cites more than 70,000 customers.

The NGFW line is presented for four placements: branch offices, campus networks, data centres and public cloud. The page highlights inline deep learning for stopping unknown and evasive threats, zero-delay signatures that update connected firewalls within seconds of an analysis, machine-learning profiling of IoT devices by type, vendor, model and firmware, and AIOps that predicts firewall health to avoid outages.

Prisma SASE extends the same protections to remote users and branches from the cloud, with Prisma Access Browser for unmanaged devices. The company describes itself as a four-time Leader in Gartner's Magic Quadrant for SASE Platforms.

Protection features are sold as subscriptions, including Advanced Threat Prevention, Advanced WildFire malware analysis, Advanced URL Filtering, DNS Security, Advanced IP Defense, Device Security, SaaS Security and Enterprise DLP. All pricing is handled through sales.

Fortinet's FortiGate is a next-generation firewall line that runs on physical appliances, virtual machines, public cloud and as a cloud-hosted FortiGate-as-a-Service. Fortinet states that FortiGate is the most deployed network firewall, with more than half of global market share, and that it was named a Leader in the 2026 Gartner Magic Quadrant for Hybrid Mesh Firewall.

The platform is built on Fortinet's own security processors, which the company says speed up security and networking functions while reducing power consumption. A single operating system, FortiOS, provides unified policy and management. Integrated SD-WAN connects offices, and built-in ZTNA controls access for remote users. Fortinet lists quantum-safe features, including quantum key distribution from FortiOS 7.4.2 and post-quantum cryptography for IPsec VPNs from FortiOS 7.6.1.

Threat protection comes from FortiGuard services, which Fortinet describes as more than 20 services. They are sold individually or in the ATP, UTP and Enterprise Protection bundles, each of which includes the one below it. OT security is sold separately from all three bundles.

Cisco sells Secure Firewall appliances and software for data centre, cloud, campus and IoT environments, managed as part of what it calls Cisco Hybrid Mesh Firewall. Threat protection is powered by Cisco Talos, which Cisco says analyses 900 billion security events a day.

Two detection features stand out on the product page. SnortML is a machine-learning engine trained on Talos zero-day research that blocks patterns associated with zero-day attacks. The Encrypted Visibility Engine identifies threats in encrypted traffic without decrypting it. Cisco Security Cloud Control provides centralised administration, and the company advertises AI agents that gather evidence and recommend next steps for firewall teams.

The range runs from the 1200 Series for distributed branches to the 6100 Series for AI-ready data centres, with firewall software for public cloud, private cloud and containers. Cisco Secure Access is the company's cloud-delivered SSE service.

Cisco's ordering guide, updated in July 2026, explains licensing. Threat Defense devices carry an Essentials licence, and protection features are added as IPS, Malware Defense and URL Filtering subscriptions.

Check Point sells its Quantum next-generation firewalls and a cloud-delivered SASE service. The firewall page states that Check Point was named a Leader in the 2025 Gartner Magic Quadrant for Hybrid Mesh Firewalls.

The firewall range is grouped by placement: data centre, large enterprise, perimeter, branch, firewall cluster, industrial, small and medium business, and DDoS. At the top end, the 29000 models list up to 75 Gbps of Layer 1-7 threat prevention, and the 19000 models list up to 800 Gbps of accelerated firewalling. Clustering with automatic load balancing is stated to scale to 1 Tbps. The firewalls include SD-WAN, remote access VPN and IoT and DDoS protection, and Check Point advertises AI-driven policy and compliance automation.

Check Point SASE, formerly Harmony SASE, covers private access with a full-mesh backbone, internet access with on-device and in-browser inspection, SaaS security, GenAI usage monitoring and secure SD-WAN for more than 10,000 applications. The SASE page cites more than 12,000 customers and more than 80 data centres. Pricing for both is quote-based.

Sophos Firewall runs on XGS Series appliances, on virtual platforms such as VMware, Hyper-V, Citrix and KVM, as software on the buyer's own Intel hardware, or in public cloud. Sophos sells only through resellers and managed service providers.

The product page groups features under four themes. Secure by Design covers automatic patching, a health check for risky configurations and remote integrity monitoring by Sophos. Protection uses the Xstream architecture, TLS decryption, deep packet inspection, machine learning and sandboxing. Detection and response adds built-in network detection and response, which Sophos says comes at no extra cost, and Active Threat Response, which blocks a device when a threat feed flags it. Management runs through the Sophos Fusion cloud console alongside switches, wireless, endpoint and email products.

Licensing is modular. A Base License covers networking, VPN and reporting. The recommended Xstream Protection bundle adds Network, Web and Zero-Day Protection, Central Orchestration for SD-WAN and VPN, DNS Protection and Enhanced Support.

Netgate develops pfSense, an open-source-based firewall, router and VPN platform, and sells it as pfSense Plus on its own appliances, as software and on public cloud marketplaces. Netgate states that the software has been installed more than 13 million times.

The product page names five user groups. Home and remote workers use it for firewall, router and VPN functions. Businesses of all sizes use it for enterprise-class features at SMB price points. Local, state and federal agencies and educational institutions rely on it for edge networking, and cloud, internet and managed service providers deploy it in their own infrastructure and for customers. Netgate claims three to five times lower total cost of ownership than traditional solutions, and lists avoiding vendor lock-in and fast response to vulnerabilities as reasons for its open-source base.

Two editions exist. pfSense CE is open source and free, with best-effort support. pfSense Plus is licensed under a commercial EULA and priced per instance per year by support tier, with all tiers offering 24/7/365 support hours.

Zscaler sells cloud-delivered security built around a proxy that sits between users and applications. Zscaler Internet Access, its secure web gateway and SSE service, is positioned as a replacement for firewall-centric architectures: the product page argues that perimeter firewalls no longer stop modern threats and that direct-to-cloud connections remove the need for edge and branch firewalls.

The service inspects all TLS/SSL-encrypted traffic, applies URL filtering and AI-based analysis, and offers intrusion prevention against botnets and zero-day threats. Zscaler describes its Single Scan, Multi-Action engine as applying layered inline controls in one pass. Zscaler Private Access provides zero trust access to internal applications, and data security covers inline DLP for web and SaaS.

The pricing page lists two bundles. Essentials Platform covers internet access with limited private access. Zscaler Platform adds full private access and inline data security. Both include standard versions of sandbox, firewall, isolation and digital experience monitoring. Advanced versions of these, along with SD-WAN, workload and segmentation products, are sold as add-ons or standalone products.

Netskope One is a cloud platform that combines networking and security services, including SASE, AI security and data security. Netskope describes three components behind it: SkopeAI, a Zero Trust Engine and the NewEdge Network, which it presents as one of the world's largest private security clouds.

The secure web gateway is the base of its SSE offering. It performs single-pass TLS inspection of web and SaaS traffic with adaptive access policies for managed and unmanaged devices. Threat protection layers anti-malware, machine-learning analysis, threat intelligence feeds and multi-stage sandboxing. Web filtering covers more than 130 categories. Behaviour analytics use more than 65 machine-learning models with more than 180 pre-built policies to detect insider risk, compromised accounts and data exfiltration.

Data protection is a central theme: DLP and DSPM cover inline web, SaaS, IaaS, email and endpoints, with more than 3,000 data identifiers, support for more than 1,800 file types and more than 40 compliance templates. Firewall-as-a-service, remote browser isolation and an enterprise browser extend inline controls to non-web traffic and unmanaged devices.

Cato Networks sells a cloud SASE platform that combines wide-area networking and security. Cato describes SASE as converging SD-WAN, a cloud network and SSE functions such as firewall-as-a-service, CASB, DLP, SWG and ZTNA into one cloud-native service, and its product is built around that design.

The core is a global private backbone of more than 85 points of presence in regional data centres, linked by multiple carriers. Cato applies optimisation to all traffic crossing the backbone, including voice, video and legacy applications, and routes SaaS traffic to the point of presence nearest the application.

Sites connect through the Cato Socket, an SD-WAN device that aggregates fibre, cable, xDSL and cellular links with application-aware QoS, dynamic path selection and automated high availability. It can also route over MPLS during a migration. Remote users connect through a client for Windows, Mac, iOS, Android and Linux, or clientless access. Digital experience monitoring uses synthetic probing and AI to find user experience problems without installing sensors.

Cato states that the platform can be deployed gradually to replace point products and legacy network services.

Cloudflare One is Cloudflare's single-vendor SASE platform. It combines workspace security services, sold on per-user plans, with network services, including Cloudflare WAN and Firewall, that are priced separately.

The per-user plans cover zero trust network access to self-hosted, SaaS and non-web resources such as SSH; a secure web gateway with network, DNS and HTTP filtering; digital experience monitoring; network flow monitoring; CASB; and DLP. Users connect through a device client that can be self-enrolled or deployed by MDM, and private resources connect through connector software that needs no public IP address. Cloudflare states that paid plans carry a 100% uptime SLA.

The plans page lists three tiers. The free plan suits teams under 50 users and enterprise proofs of concept. Pay-as-you-go suits teams over 50 users with narrow SSE needs that do not require enterprise support. The Contract plan is for organisations building toward a full SASE or workspace security deployment and adds full DLP, unlimited CASB integrations, email security and professional services as add-ons. Log Explorer is free for the first 10 GB, then $1 per GB per month on free and pay-as-you-go plans.