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Arista Edge Threat Management NG Firewall vs OPNsense comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Sep 16, 2024

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

ROI

Sentiment score
5.7
Arista Edge Threat Management NG Firewall reduces incidents, enhances detection, and saves $540, though not all see tangible returns.
Sentiment score
3.0
Numerous users reported substantial financial savings and improved network security with OPNsense compared to alternatives like FortiGate or Sophos.
it comes from multiple areas such as the reduction in annual security incidents, mean time to detect and mean time to respond, audit preparation time reduction, reduction in internet bandwidth misuse, and also with respect to firewall uptime and availability.
Global Leadership Council at a tech company with 10,001+ employees
The network attacks reduced by approximately 60% after using that, even without customizing the custom configuration yet.
Senior IT Infrastructure Engineer at a real estate/law firm with 11-50 employees
For a very little investment, I was able to increase the security of my network.
Administrator at a retailer with 10,001+ employees
 

Customer Service

Sentiment score
6.8
Users appreciate Arista's customer service and support but suggest improvements in global support for small and medium enterprises.
Sentiment score
5.3
OPNsense users mostly find community forums and documentation sufficient, though some express dissatisfaction with official support availability and cost.
The response from the engineers is good, they have a strong documentation knowledge base.
Global Leadership Council at a tech company with 10,001+ employees
My experience with Arista Edge Threat Management NG Firewall's customer support has been very good as the response times were satisfactory.
Supervisor at a consultancy with 11-50 employees
Compared to some open-source projects with weak support, OPNsense stands out for having both a strong community and commercial backing options.
ISO 27001 Lead Implementer at a consultancy with 11-50 employees
I mainly rely on community support since the solution is open source.
Senior Client Solutions Architect at a tech services company with 1,001-5,000 employees
If you say you do not have one, it is finished. This is where the monopoly starts.
Senior Solutions Engineer at a educational organization with 201-500 employees
 

Scalability Issues

Sentiment score
7.8
Arista Edge Threat Management NG Firewall efficiently supports organizational growth, adaptability, and diverse environments for any enterprise size.
Sentiment score
6.8
OPNsense offers scalable and flexible network solutions, effectively supporting mid-sized to enterprise needs with appropriate hardware or virtualization.
I consider the scalability of Arista Edge Threat Management NG Firewall to be good as it adapts well to different environment sizes.
Supervisor at a consultancy with 11-50 employees
I use Zenarmor, pinning it to one core for packet inspection, and the CPU performance seems very good.
Senior Client Solutions Architect at a tech services company with 1,001-5,000 employees
OPNsense's scalability is excellent; I just need to resize my hardware and upgrade the server, and voilà, I am good to go.
Senior IT Infrastructure Engineer at a real estate/law firm with 11-50 employees
In theory, OPNsense can handle small home networks and even large enterprise environments if deployed on sufficiently powerful hardware or virtualized on a clustered system.
ISO 27001 Lead Implementer at a consultancy with 11-50 employees
 

Stability Issues

Sentiment score
8.7
Arista Edge Threat Management NG Firewall is highly stable and reliable, rated nine out of ten by users.
Sentiment score
7.3
OPNsense is stable with occasional issues; praised for security and UI, performance varies with hardware and resource availability.
Overall stability would be a nine out of ten; it's quite reliable.
Global Leadership Council at a tech company with 10,001+ employees
For home and small network use, OPNsense is also reliable, providing enterprise-grade security at no cost.
ISO 27001 Lead Implementer at a consultancy with 11-50 employees
The only challenge faced was its inadequacy to manage large voice traffic effectively, even with dedicated hardware.
Senior Network Engineer at a comms service provider with 11-50 employees
At the latest code level, I haven't experienced any crashes.
Senior Client Solutions Architect at a tech services company with 1,001-5,000 employees
 

Room For Improvement

Arista Edge Threat Management NG Firewall needs AI advancements, better integration, improved UI, documentation, support, and threat detection.
OPNsense users face VPN setup issues, inadequate documentation, performance shortfalls, high pricing, and request better usability and features.
It has fewer third-party integrations, and therefore the adoption amongst very large enterprises is less; it's largely with the SMBs.
Global Leadership Council at a tech company with 10,001+ employees
I see the need for improvements in Arista Edge Threat Management NG Firewall particularly in automatic threat detection and rule optimization.
Supervisor at a consultancy with 11-50 employees
Arista Edge Threat Management NG Firewall can be improved, particularly the user interface, which is not very good.
systems engineer at a computer software company with 51-200 employees
Enhancing its performance for significant amounts of data traffic would make it closer to a perfect solution.
Senior Network Engineer at a comms service provider with 11-50 employees
It would be beneficial if they could create some videos on how to set it up themselves.
Administrator at a retailer with 10,001+ employees
The documentation should be clearer because I faced some difficulties navigating many options.
ISO 27001 Lead Implementer at a consultancy with 11-50 employees
 

Setup Cost

Arista Edge Threat Management NG Firewall offers modular, budget-friendly licensing, especially discounted for non-profits, educational, and government organizations.
OPNsense is a cost-effective, open-source solution for enterprises, reducing expenses compared to FortiGate and Palo Alto alternatives.
Licensing is modular, allowing customers to pay only for the applications they need, and especially for non-profit organizations, education institutions, and government organizations, they offer discounted pricing.
Global Leadership Council at a tech company with 10,001+ employees
I consider the pricing of OPNsense to be high when compared with other market products.
Senior Network Engineer at a comms service provider with 11-50 employees
OPNsense is free, the licensing and setup was easy.
Administrator at a retailer with 10,001+ employees
 

Valuable Features

Arista Edge Threat Management NG Firewall offers robust threat detection, flexible deployment, user-friendly configuration, and enhanced cyber risk reduction capabilities.
OPNsense provides user-friendly configuration, robust security features, and adaptability, making it ideal for enterprise and IT network management.
Bandwidth management and traffic policy help my organization by keeping our internet subscription low.
systems engineer at a computer software company with 51-200 employees
Arista Edge Threat Management NG Firewall very useful. It combines firewall and intrusion prevention system, web filtering, VPN, application control, bandwidth monitoring, and reporting.
Global Leadership Council at a tech company with 10,001+ employees
Arista Edge Threat Management NG Firewall is quite a user-friendly solution at the configuration level, its features have made my work easier and optimized processes for my clients because the initial startup of the solution is quite agile in terms of configuration deployments.
Supervisor at a consultancy with 11-50 employees
The most valuable features include the basic firewall functionality and the GeoIP location services.
Senior Network Engineer at a comms service provider with 11-50 employees
I can have a Wi-Fi VLAN and feel secure that the server network or the VM network that I have on a different VLAN are isolated, and they cannot talk to one another, which adds a great level of security.
Administrator at a retailer with 10,001+ employees
It offers enterprise-grade features such as intrusion detection and prevention system, VPN support, traffic shaping, and web filtering, all without license cost.
ISO 27001 Lead Implementer at a consultancy with 11-50 employees
 

Categories and Ranking

Arista Edge Threat Manageme...
Ranking in Firewalls
39th
Average Rating
7.4
Reviews Sentiment
6.3
Number of Reviews
5
Ranking in other categories
No ranking in other categories
OPNsense
Ranking in Firewalls
7th
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
47
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of August 2026, in the Firewalls category, the mindshare of Arista Edge Threat Management NG Firewall is 0.3%, up from 0.1% compared to the previous year. The mindshare of OPNsense is 7.9%, down from 11.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls Mindshare Distribution
ProductMindshare (%)
OPNsense7.9%
Arista Edge Threat Management NG Firewall0.3%
Other91.8%
Firewalls
 

Featured Reviews

TarunKumar11 - PeerSpot reviewer
Global Leadership Council at a tech company with 10,001+ employees
Secure internet access has reduced threats and simplifies firewall management for distributed teams
Threat detection needs improvement; Arista Edge Threat Management NG Firewall should follow Alto and Fortinet. One limitation that I've seen is AI-driven automation which needs to vastly improve. It has fewer third-party integrations, and therefore the adoption amongst very large enterprises is less; it's largely with the SMBs. Customer support can be improved. It's a smaller global footprint that Arista provides, with fewer certified partners in some regions and limited 24/7 support for premium vendors. I've categorically mentioned that it has sophisticated threat detection capabilities but they can be bettered. AI-driven automation can be improved, and therefore, I think the adoption with large enterprises can be much better. I think the current AI capabilities of Arista Edge Threat Management NG Firewall are a bit limited compared to other vendors. It primarily relies on threat intelligence feeds, signature-based detection, and reputation services. Currently, I would rate its AI capabilities as probably a seven out of ten because it does not provide for extensive GenAI or advanced ML-driven autonomous capabilities like some of its competitors. Threat intelligence aspects can be further improved, and I think there's a lot that the product can do with respect to the usage of AI. AI-driven automation and threat detection can vastly improve. I don't think they were purchased through AWS Marketplace. The adoption has to increase amongst large customers, and threat intelligence needs to improve for many customers to adopt, enhancing the security ecosystem that is relatively small.
Moutaz Sheikh Alard - PeerSpot reviewer
ISO 27001 Lead Implementer at a consultancy with 11-50 employees
Has helped simulate enterprise security setups and strengthens network segmentation practices
For my capstone, I use OPNsense for my project and its broader benefits for enterprise and cybersecurity context. OPNsense is an open source based firewall and routing platform. It offers enterprise-grade features such as intrusion detection and prevention system, VPN support, traffic shaping, and web filtering, all without license cost. This platform has a modular design, a clean web-based GUI, and frequent updates that prioritize security and usability. It competes with commercial firewalls such as Cisco ASA, FortiGate, and Palo Alto, but stands out because it's community-driven, cost-effective, and transparent. I find OPNsense's feature of acting as a central firewall and gateway most valuable, providing robust point segmentation between the internal network and DMZs in my capstone project, intrusion detection to monitor malicious traffic, VPN services for secure remote access, and logging and monitoring for compliance and auditing. This allows me to simulate a real-world enterprise environment on a smaller scale, demonstrating both security hardening and network efficiency. OPNsense impacts my projects and home network positively because its cost-effectiveness is perfect for lab and enterprise setup without expensive licensing. The flexibility, easy VLAN and DMZ configuration supports different zones such as web servers, mail servers, and log servers. The security-first design for IDS/IPS integration helps me showcase modern defense-in-depth strategies. The user-friendly management through the web GUI makes it possible to manage complex firewall rules clearly, which is critical when documenting and presenting a capstone. Scalability is also an advantage. Although my project is lab-based, OPNsense can scale into production deployments in SMBs and enterprise.
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Top Industries

By visitors reading reviews
Construction Company
36%
Comms Service Provider
9%
Healthcare Company
8%
Logistics Company
3%
Comms Service Provider
17%
Computer Software Company
9%
Manufacturing Company
8%
Outsourcing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business32
Midsize Enterprise6
Large Enterprise8
 

Questions from the Community

What is your experience regarding pricing and costs for Arista Edge Threat Management NG Firewall?
I do not handle the economic aspects of negotiations with the client, so I do not have experience with the pricing, implementation cost, and licensing of Arista Edge Threat Management NG Firewall.
What needs improvement with Arista Edge Threat Management NG Firewall?
I believe Arista Edge Threat Management NG Firewall could be improved by adapting even more to advances in artificial intelligence and I would like the platform to offer or improve on that front.I ...
What advice do you have for others considering Arista Edge Threat Management NG Firewall?
I would not like to add anything else about the main use case or any situation.I would not like to add anything else about the tool's features. I would not like to add anything else about the neces...
What is the difference between PfSense and OPNsense?
Two of the most common and well recognized firewalls, PfSense and OPNsense both support site-to-site IPsec VPN and client, Open VPN and client, and PPTP client. Both also have intrusion detection a...
What is your experience regarding pricing and costs for OPNsense?
Setup cost is almost zero as one can simulate the whole environment using open source version. Pricing seems fair enough. Open source license allows a beginner to have a complete firewall solution ...
What needs improvement with OPNsense?
When I talk about VPN, I am not completely satisfied with the VPN functions of OPNsense. What I have received so far is that sometimes the VPN route caches for some time and sometimes I want to cha...
 

Overview

 

Sample Customers

Information Not Available
1. Deciso B.V. 2. iXsystems, Inc.  3. EuroBSDCon  4. Netgate  5. Claranet  6. Voleatech  7. Open Systems AG  8. Securebit AG  9. Proxmox Server Solutions GmbH  10. AVM Computersysteme Vertriebs GmbH  Additional customers include: T-Systems International GmbH, Deutsche Telekom AG, Vodafone GmbH, 1&1 IONOS SE, OVHcloud, Hetzner Online GmbH, Strato AG, PlusServer GmbH, Host Europe GmbH, United Internet AG, 1&1 Versatel Deutschland GmbH, QSC AG, Bechtle AG, Cancom SE, Computacenter AG & Co. oHG, T-Systems Multimedia Solutions GmbH, Atos SE, Capgemini SE, Accenture plc, IBM Corporation, Hewlett Packard Enterprise Company, Cisco Systems, Inc.
Find out what your peers are saying about Arista Edge Threat Management NG Firewall vs. OPNsense and other solutions. Updated: August 2026.
908,877 professionals have used our research since 2012.