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SonicWall TZ Series Firewalls - Refurbished, Used, New
The SonicWall TZ Series is the small business and branch office firewall line, and the most widely deployed SonicWall hardware in the world. Every TZ is a compact, fanless desktop appliance running the same SonicOS security stack as the rack-mounted NSa line, scaled down to a single site, a retail counter or a home office.
The whole TZ range, both generations
| Model | Gen | Firewall | Threat prevention | Max connections | Ports |
|---|---|---|---|---|---|
| TZ300 | 6 | 750 Mbps | 235 Mbps | 100,000 | 5x 1GbE |
| TZ350 | 6 | 1 Gbps | 335 Mbps | 100,000 | 5x 1GbE |
| TZ400 | 6 | 1.3 Gbps | 600 Mbps | 150,000 | 7x 1GbE |
| TZ500 | 6 | 1.4 Gbps | 700 Mbps | 150,000 | 8x 1GbE |
| TZ600 | 6 | 1.9 Gbps | 800 Mbps | 150,000 | 10x 1GbE |
| TZ270 | 7 | 2 Gbps | 750 Mbps | 750,000 | 8x 1GbE |
| TZ370 | 7 | 3 Gbps | 1 Gbps | 900,000 | 8x 1GbE |
| TZ470 | 7 | 3.5 Gbps | 1.5 Gbps | 1,000,000 | 8x 1GbE, 2x 2.5GbE |
| TZ570 | 7 | 4 Gbps | 2 Gbps | 1,250,000 | 8x 1GbE, 2x 5GbE |
| TZ670 | 7 | 5 Gbps | 2.5 Gbps | 1,500,000 | 8x 1GbE, 2x 10GbE |
Browse by generation: TZ Gen 7 or TZ Gen 6.
Gen 6 or Gen 7?
This is the first question, and it usually matters more than the model number. The entry-level Gen 7 TZ270 outperforms the top-of-range Gen 6 TZ600 on every measure that counts: 2 Gbps against 1.9, and a connection table five times larger at 750,000 against 150,000. A generation is worth more than four model steps.
The connection table is the part people miss. Every Gen 6 TZ tops out between 100,000 and 150,000 concurrent connections regardless of model, so moving from a TZ300 to a TZ600 buys throughput and ports but no additional capacity for simultaneous sessions. The Gen 7 line starts at 750,000. For a site with a lot of users, a lot of devices, or anything chatty on the network, that single number decides whether the firewall copes.
Gen 7 also runs SonicOS 7 rather than 6.5, which brings Secure SD-WAN, TLS 1.3 decryption and SonicWall's RTDMI engine for real-time deep memory inspection.
The case for Gen 6 is real but specific: you already run SonicOS 6.5 across your sites and want no firmware divergence, you need a cold spare for an existing deployment, or the budget simply is not there. On those grounds a Gen 6 TZ is a sound buy and considerably cheaper.
Reading the throughput numbers
Firewall throughput is measured with inspection largely switched off, and it is the figure vendors lead with. Threat prevention throughput is what the appliance sustains with the security services you bought it for actually running. Size against the second number. A TZ400 rated at 1.3 Gbps delivers 600 Mbps with its services on, which is the figure that matters against your internet circuit.
Transfer ready or non-transferable?
Every SonicWall we list states its registration status, because on the secondary market that matters as much as physical condition.
TRANSFER READY means the unit can be registered into your own MySonicWall account. From there you can add support, security service subscriptions and warranty, the same as a unit bought new.
NON-TRANSFERABLE means the unit cannot be moved into your MySonicWall account. It still works, and it is still managed locally through its own interface with the full configuration under your control. What you cannot do is add services, subscriptions or warranty to it. Our pricing treats them as hardware, and they suit a lab, a cold spare, or a small site that needs firewalling and VPN without subscription services.
At NetworkTigers, we supply refurbished, used, and new SonicWall TZ Series firewalls across both generations, each fully tested, serialized, and production-ready, with fast shipping and a 365-day warranty.
SonicWall 02-SSC-2825 TZ370 3 Gbps Firewall - TRANSFER READY
$ 289.99
$ 349.99
Call if you need more
SonicWall TZ500 01-SSC-0211 1.4 Gbps 6x 1GbE RJ45 Firewall -TRANSFER READY
$ 89.95
$ 89.99
Call if you need more
SonicWall 02-SSC-2821 TZ270 Series 2 Gbps Firewall - TRANSFER READY
SonicWall TZ470 02-SSC-2829 3.5 Gbps Firewall - TRANSFER READY
NEW SonicWall 02-SSC-0184 SOHO Total Secure CSC SECAAS Firewall NEVER REGISTERED
$ 119.99
$ 129.99
Call if you need more
SonicWall TZ400 01-SSC-0213 1.3 Gbps Enhanced Firewall - TRANSFER READY
SonicWall TZ270W Wireless 02-SSC-8059 2 Gbps Firewall - TRANSFER READY
$ 364.99
$ 549.99
Call if you need more
NEW SonicWall TZ300 01-SSC-0576 3 YR AGSS Secure Upgrade Plus NEVER REGISTERED
$ 459.99
Call if you need more
SonicWall 02-SSC-1866 TZ350 Series Wireless 1.0 Gbps Firewall - TRANSFER READY
SonicWall TZ300 01-SSC-0215 Never Registered 3 Years Hardware Warranty
$ 389.99
Call if you need more
