Network Firewalls

118 products

Next-Generation Network Firewalls for Business Security

Protect your network perimeter with enterprise firewalls from SonicWall, Ubiquiti, and ZYXEL. Island Electrical Supply stocks next-generation firewall appliances with deep packet inspection, intrusion prevention, VPN, and content filtering built in.

Best for: IT administrators and managed service providers securing business networks against ransomware, intrusion, and unauthorized access.

Firewalls by Brand

Choose the right firewall platform for your security requirements:

  • SonicWall Firewalls with TZ, NSa, and NSsp series covering small offices to large enterprises
  • Ubiquiti Gateways with built-in IDS/IPS and zero licensing fees
  • ZYXEL firewalls for budget-friendly SMB protection

Key Security Features

Modern firewalls go far beyond basic packet filtering. Look for deep packet inspection (DPI) to analyze traffic content, intrusion detection and prevention (IDS/IPS) to block known attack patterns, SSL/TLS inspection to scan encrypted traffic, and content filtering to enforce acceptable use policies. VPN support (IPSec, SSL, WireGuard) enables secure remote access for distributed teams.

Sizing a Firewall

Match the firewall to your throughput requirements. Check the rated firewall throughput, threat prevention throughput (with all security services active), and VPN throughput. Small offices (under 50 users) typically need 300-600 Mbps of threat prevention throughput, while larger sites may need 1 Gbps or more. Also consider the number of concurrent connections and WAN interfaces needed.

Qualifying orders ship free. Contact our team for expert guidance on enterprise networking solutions and volume pricing.

Frequently Asked Questions

What is the difference between a firewall and a router?

A router directs traffic between networks, while a firewall inspects and filters that traffic based on security rules. Most business firewalls include routing capabilities, so they can replace your router while adding security features like intrusion prevention, content filtering, and VPN.

Do I need a subscription for a SonicWall firewall?

SonicWall firewalls require an active subscription for advanced security services like gateway antivirus, intrusion prevention, content filtering, and cloud sandboxing. The hardware works without a subscription for basic firewall rules and VPN, but the real-time threat intelligence requires an active license.

Can a Ubiquiti Dream Machine replace a dedicated firewall?

The UniFi Dream Machine and Dream Machine Pro include a built-in firewall with IDS/IPS, DPI, and threat management. For small to mid-sized networks, they offer good protection. However, businesses with strict compliance requirements or high security needs may prefer a dedicated firewall from SonicWall with certified threat prevention services.