SonicWall TZ600 vs TZ670 Key Differences in Firewall Security

SonicWall TZ600 vs TZ670: Key Differences in Firewall Security

July 29, 2025

From a technical standpoint, a look at SonicWall TZ600 vs TZ670 will inherently come with a few differences that stand out. In the same vein, They also include similar core functionalities that are needed in today’s firewall expectations.

It’s also important to highlight that the TZ600 isn’t available since it has been discontinued. However, the capabilities and limitations of the TZ600 will help shed light on why the TZ670 came to be.

With a quick search, you’ll see the SonicWall TZ series offers quite a bit of variety in the lineup. This article will break into SonicWall TZ600 vs TZ670 to give you a better understanding of their key differences.

Comparing SonicWall TZ600 vs TZ670

The short version is that the TZ670 is a bit more powerful than the TZ600 in several areas. For example, the TZ600 delivers a slower throughput compared to the newer model. Overall, performance and scalability should be a big deciding factor for any business looking for new firewall hardware.

While both SonicWall firewall generations are effective in their own right, the TZ670 is a better choice for growing businesses. From more single sign-on users to efficiencies and long-term scalability, it’s hard to argue with the benefits of the TZ670.

Of course, you can assume many businesses are still working with the TZ600, but that doesn’t mean it can’t become an outdated solution. For any business, it comes down to the current need and future scope of your network. You can always upgrade, but it can be helpful to navigate this with the best long-term firewall in mind.

What is the SonicWall TZ600

The strength of this firewall technology can’t be ignored, even if the TZ670 is stronger in a few key specs. Simple wireless network management and enterprise-level security are a promise here, and setup is easier than you’d imagine. Regardless of how user-friendly it is, the numbers in the specifications are what really matter here.

When it comes to firewalls, you always want to look at the following core specs:

  • Firewall Throughput: 1.5 Gbps
  • Threat Prevention Throughput: 800 Mbps
  • Anti-malware Inspection: 800 Mbps 
  • IPS Throughput: 1.2 Gbps
  • Max Connections (SPI): 150,000 
  • Connections per Second: 12,000
TZ600

This could very well be more than enough for many businesses right now. Aside from the fact that the TZ600 is discontinued, the technology can still hold up. Although this is true, comparing these details to the SonicWall TZ670 could quickly change your perspective.

What is the SonicWall TZ670

Also crafted for small to mid-size businesses, the SonicWall TZ670 promises a bit more power. It’s similar to an easy management interface, and it’s adaptable for small businesses and franchise locations. Aside from supporting numerous security features, comparing the same specs to the TZ600 can offer a clearer look at the differences.

Here are a few surface-level details that separate the TZ670 from the TZ600:

  • Firewall Throughput: 5.0 Gbps 
  • Threat Prevention Throughput: 2.5 Gbps 
  • Anti-malware Inspection: 2.5 Gbps 
  • IPS Throughput: 3.0 Gbps 
  • Max Connections (SPI): 1,500,000 
  • Connections per Second: 25,000

The upsides to the TZ670 are clear, but the differences between the two firewalls go far beyond this. For the most part, the bullet points above highlight how the TZ670 is a better, scalable solution for growing businesses of all kinds.

SonicWall TZ600 vs TZ670

The details in the specifications can’t be argued with, making it an easier decision for how you should approach business network security. Nevertheless, looking past surface-level information is crucial to get a full look at the situation. The table below provides a side-by-side comparison of additional details between SonicWall TZ600 vs TZ670.

SpecificationsSonicWall TZ600SonicWall TZ670
Interface10 x 1GbE
2 x USB
8 x 1GbE
2 x 10GbE
2 x USB 3.0
SSO Users5002,500
VLAN Interfaces50256
Firewall Throughput1.5 Gbps5.0 Gbps
Threat Prevention Throughput500 Mbps2.5 Gbps
Max Connections (SPI)150,0001,500,000
Max Connections per Second12,00025,000
Site-to-Site VPN Tunnels25250
Power Supply36W External60W External

There are plenty of businesses out there still running on the TZ600, but that won’t be a permanent solution. It may still get operational support, but the specs are a bit outdated compared to the TZ670 SonicWall firewall.

Final Thoughts

For those who are new to firewall technology, it can all seem rather convoluted on the surface. It doesn’t have to be, as sizing up the most important details can streamline your understanding.

The technology is undoubtedly important, but so are the service providers you work with. If you’re interested in learning more about the SonicWall network security appliance TZ670, our team has all of the information you’re looking for.

Picture of Written by Lucas Modrall

Written by Lucas Modrall

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