Sophos XG125 vs XGS128 From Predecessor to Modern Cyber Security Firewall

Sophos XG125 vs XGS128: From Predecessor to Modern Cybersecurity Firewall

Sophos XG125 vs XGS128 From Predecessor to Modern Cyber Security Firewall

Sophos XG125 vs XGS128: From Predecessor to Modern Cybersecurity Firewall

June 19, 2025

Sharing similarities like a fairly compact design and cost-efficiency, the discussion of Sophos XG125 vs Sophos XGS128 is a bit more complex. While the 125 just recently faced its end of life at the end of March, many people are looking to the 128 as an upgrade. Due to this, we’re looking at the jump from the XG 125 to XGS 128 to review some of the core differences.

This is important for transitioning your network security architecture and ensuring you don’t run into unexpected downtime. Learning about the finer specs in each firewall model can provide better clarity on which piece of hardware is right for your network.

Knowing Where to Look

There’s a lot of technical information behind any firewall model on the market. Even if you were to get into the data sheets yourself, it can be challenging to make accurate comparisons.

Both of these Sophos firewall appliances are great in their own right, but no model lasts forever. There are many different firewalls you could transition to from the XG125, but not all of them would be the right choice. Whether you’re looking for new hardware or setting up your network architecture for the first time, start with the most important specs first.

What is the Sophos XG125?

The Sophos XG125 may have met its end in March, but it definitely had a good run on the market. Aside from its general cost-efficiency, the firewall was a great choice for small businesses and branch offices.

Here are a few of the specs that made the hardware so great for its target market:

  • Firewall Throughput: 6,500 Mbps
  • VPN Throughput: 700 Mbps
  • IPS Throughput: 1,530 Mbps
  • Antivirus Throughput: 700 Mbps
  • Concurrent Connections: 6,000,000

If you’re new to this space, these numbers may not seem like much. Once you’re able to stack them against the XGS128, it’ll start to make a lot more sense.

What is the Sophos XGS128?

With this new generation firewall from Sophos, you get a lot of the same things. However, similar specs look a lot more impressive with this model, not to mention the new features that come with it.

This is a glimpse of what you can expect from the Sophos XGS128:

  • Firewall Throughput: 19,100 Mbps
  • VPN Throughput: 15,050 Mbps
  • IPS Throughput: 4,650 Mbps
  • Threat Protection Throughput: 4,000 Mbps
  • Concurrent Connections: 6,000,000

It’s true that the Sophos XG end of life is a big part of why people are transitioning to this firewall model. Outside of that, it remains a stellar piece of hardware for network security that’s built with today’s standards in mind.

How Does Sophos XG125 vs XGS128 Compare?

When it comes to your search for the right network security hardware, you’ll need to get objective about the specs involved. Your Sophos reviews should look for hardware that can meet your network security demands now and in the future. The table below offers a clear comparison between the Sophos XG125 and XGS 128.

SpecificationsSophos XG125Sophos XGS128
Firewall Throughput (Mbps)7,00019,100
VPN Throughput (Mbps)1,50015,050
IPS Throughput (Mbps)1,5304,650
Threat Protection Throughput (Mbps)4004,000
Concurrent Connections1,570,0006,000,000
New Connections per Second29,30072,250
NGFW Throughput (Mbps)1,2754,350
Xstream SSL/TLS Inspection (Mbps)N/A1,450
Xsteram SSL decryption + Threat Protection (Mbps)170N/A

Between the hardware specs and varying Sophos pricing, you’ll always have quite a bit to consider. Combining the information in this article with the right service provider is how you end up with the long-term support you need.

Final Thoughts

Your network security architecture will eventually change over time. Whether this is due to preference or demand, it’s best to be one step ahead at every turn. You can do this by sticking with reliable hardware solutions while keeping an eye out for what’s to come.

Another important angle here is working with service providers who understand your long-term needs as well. Come chat with us at Firewalls to learn more about how the Sophos XGS128 is a great option for your organization.

Picture of Written by Lucas Modrall

Written by Lucas Modrall

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