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Web Filtering - 7 Port - 10/100/1000Base-T, 1000Base-X - Gigabit Ethernet - 2.25 Gbit/s Firewall Throughput - SSL, DES, 3DES, AES (256-bit), MD5, SHA-1, SHA-2 256-bit - 150 VPN - 7 x RJ-45 - 1 Total Expansion Slots - Rack-mountable
MSRP$619.99
$524.32
Save 15%Special order — estimated available by September 10, 2026.
Genuine ZYXEL Communications through authorized distribution — TAA country-of-origin verified and NDAA §889 screened before checkout.
The latest USG FLEX series provides one single management platform on the cloud while expanding and strengthening the protection from firewalls to access points with automatic responses. The newly designed USG FLEX Series is capable of minimizing computing power usage and maximizing firewall performance, delivering up to 5x UTM performance with cloud flexibility and collaborative protection to help connect and secure small or mid-sized business users.
Benefits | Nebula together
USG FLEX firewalls, the new addition to the Nebula cloud management family, strongly empowers the full-blown Zyxel security matrix in Nebula, further optimizing Nebula with holistic security and protection for SMB business networks. Zyxel provides a centralized provisioning security policy to the remote workforce from Nebula and traffic shaping eliminating the network bottleneck to fuel the best business productivity.
Zero trust security made easy for SMBs
USG FLEX series is your network security ally that leverages AI security cloud to operate multi-layered protection such as anti-malware, DNS/IP/URL filtering, IPS, and application patrol. Our multiple OS supported SecuExtender easily extends the same security outside network premise to remote employees that are on the go. USG FLEX series makes zero trust security easy for small to mid-sized business users.
High assurance multi-layered protection
USG FLEX is designed with multi-layer protection against multiple types of threats from in and out. Multiple security services empower you to restrict users' inappropriate application usage or web access. Zyxel offers leading-industry DNS content filter, eliminating blind spots in all encrypted traffic with TLS 1.3 without the need to deploy SSL inspection. All together safeguarding your network without any unattended gaps.
Best threat intelligence alliance
To ensure your network on getting the best protection, USG FLEX integrates threat intelligence from leading companies and organizations in the cybersecurity field for scaled information about file and real-time threat data. By leveraging a wider malware coverage with multiple-sourced database, this increases the accuracy in threat detection. Web Filtering is also included to safeguard all internet access, especially with CTIRU (Counter-Terrorism Internet Referral Unit) to restrict access to terrorist materials online.
Simplified and unified licensing experience
We know the experience from license purchase and renewals are equally important to our partners. We've optimized the licensing management platform and brought a consistent migration path between on-premise and our cloud platform. We make sure our partners can quickly adapt to a secure environment without the hassle but retaining the flexibility for those who need to practice the same security across networks scenarios.
Safeguarding remote connectivity to your corporate network
Businesses striking a balance on productivity and security protection becomes a priority with growing number of devices. Whether it is a wired, wireless, or a IoT device, the Secure WiFi service is used to build a secure L2 tunnel for Work-From-Home user to extend the working experience easily and securely, as if you were in the office with the safety of both two-factor authentication and secure tunnel, which boosts up productivity and eases IT support. The Secure WiFi service also unlocks the number of managed APs to maximum for the USG FLEX firewall.
ZyXEL has been a pioneer in IP technology for over twenty-five years. They are leading the digital home revolution with a complete portfolio of residential broadband gateways, Wi-Fi and powerline home connectivity and entertainment solutions, and smart home devices. ZyXEL also provides a comprehensive line of carrier grade Ethernet switches, next-generation UTM firewalls and enterprise-class Wi-Fi equipment for SMBs. Headquartered in Anaheim, California, ZyXEL offers integrated, interoperable and easy to manage network equipment based on open standards, and backed by a domestic team of logistic, sales, and technical support professionals.
| Package Contents |
|
|---|---|
| Product Type | Network Security/Firewall Appliance |
| Firewall Protection Supported | Cloud Sandboxing, Web Content Filtering, Malware Protection, Email Security, URL Filtering, Denial of Service (DoS), Distributed Denial of Service (DDoS), Stateful Packet Filtering, DNS Security, Threat Protection, Dead Peer Detection, FloodGuard, SSL Inspection, Application Control, Intrusion Prevention, Reputation Enabled Defense |
| Manufacturer Part Number | USGFLEX500BUN |
| Weight (Approximate) | 3.64 lb |
| Connectivity Technology | Wired |
| Form Factor | Rack-mountable |
| Manufacturer | ZYXEL Communications Corp. |
| Product Model | USG FLEX 500 |
| Product Name | ZyWALL USG FLEX 500 Network Security/Firewall Appliance |
| Power Consumption | 24.10 W |
| Product Line | ZyWALL |
| Product Series | USG Flex |
| Brand Name | ZYXEL |
| Expansion Slot Type | SFP (mini-GBIC) |
| Height | 1.7" |
| Width | 11.8" |
| Depth | 7.4" |
| Manageable | Yes |
| Network Standard | 10/100/1000Base-T, 1000Base-X |
| VPN Throughput | 101.25 MB/s |
| Encryption Standard | SSL, DES, 3DES, AES (256-bit), MD5, SHA-1, SHA-2 256-bit |
| Firewall Throughput | 2.25 Gbit/s |
| IPS Throughput | 187.50 MB/s |
| Ethernet Technology | Gigabit Ethernet |
| USB | Yes |
| Number of Network (RJ-45) Ports | 7 |
| Number of SFP Slots | 1 |
| Functionality | Web Filtering |
| Total Number of Ports | 7 |
| Total Number of Expansion Slots | 1 |
| Number of VPN Supported | 150 |
| Data Link Protocols | SMTP, HTTP, FTP, IMAP, L2TP, HTTPS, SMB |
| Number of Concurrent Sessions (Max) | 1e+06 |
| AI-powered | Yes |
| AI Features | Anti-malware, DNS Filtering |
Matched on 5–10 · Rack-mountable
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