Cisco Secure Firewall vs OPNsense comparison

Cisco and OPNsense are both solutions in the Firewalls category. Cisco is ranked #5 with an average rating of 8.2, while OPNsense is ranked #3 with an average rating of 8.3. Cisco holds a 5.6% mindshare in Firewalls, compared to OPNsense’s 13.3% mindshare. Additionally, 83% of Cisco users are willing to recommend the solution, compared to 97% of OPNsense users who would recommend it.

Comparison Buyer's Guide

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Executive SummaryUpdated on Sep 16, 2024

Cisco Secure Firewall and OPNsense compete in the firewall solutions category. Cisco Secure Firewall is robust with strong customer support, but OPNsense's open-source flexibility offers a powerful alternative.

Features: Cisco Secure Firewall users value its advanced threat protection, integration capabilities, and strong customer support. OPNsense users highlight its strong VPN support, customizable security features, and flexibility due to its open-source nature.

Room for Improvement: Cisco Secure Firewall users point out the need for simpler configuration processes, better documentation, and more intuitive interface design. OPNsense users suggest improvements in user support, interface intuitiveness, and more comprehensive documentation.

Ease of Deployment and Customer Service: Cisco Secure Firewall is praised for its powerful yet complex deployment model, coupled with robust customer service support. OPNsense is easier to deploy due to its straightforward setup process but receives mixed reviews on customer service quality.

Pricing and ROI: Cisco Secure Firewall involves higher setup costs but justifies this with comprehensive features and a strong ROI after implementation. OPNsense, being open-source, has lower upfront costs and offers a favorable ROI due to reduced initial expenditure.

To learn more, read our detailed Cisco Secure Firewall vs. OPNsense Report (Updated: January 2025).

Buyer's Guide

Cisco Secure Firewall vs. OPNsense

January 2025

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Review summaries and opinions

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

Categories and Ranking

Fortinet FortiGate

Mindshare comparison

As of February 2025, in the Firewalls category, the mindshare of Fortinet FortiGate is 20.7%, up from 17.7% compared to the previous year. The mindshare of Cisco Secure Firewall is 5.6%, up from 5.6% compared to the previous year. The mindshare of OPNsense is 13.3%, down from 17.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Firewalls

Featured Reviews

EhabAli

Sr. Cybersecurity Solutions Architect at BMB

Efficient, user-friendly, and affordable

In the past, NSS Labs was utilized to test files and verify the numbers and datasheets. It would be beneficial to have an organization or testing lab that can verify the numbers in our datasheets since changes are frequently made, which can be inconvenient for review. For instance, when comparing different competitors such as Forcepoint, Palo Alto, and Check Point, the throughput or numbers in the datasheet may be lower than the actual numbers. Conversely, Fortinet typically reports very high numbers, but they cannot be replicated in the real world. Therefore, it would be advantageous for them to partner with a neutral testing organization such as NSS Labs to validate these numbers, thus providing more credibility and comfort to everyone regarding the accuracy of the datasheets. For the migration, everyone has a firewall in use and I am selling Fortinet. Typically, I am replacing another firewall. Previously, there was a tool available to convert configurations from one firewall, such as Palo Alto, to Fortinet, but this tool is no longer free. If it could be made free again, it would be very beneficial. This tool shows a lot of promise and is very good. Making it free would help many companies deliver their products in a more efficient and integrated way. It would also be more valuable to include the tool with the firewall package or license instead of having to pay extra for it. Paying extra puts more pressure on small companies to deliver the firewall and complete the configuration, especially if they have hundreds or thousands of policies. It's very painful to move through these policies line by line. The stability has room for improvement. When it comes to Secure SD-WAN, everything is fine. They are going the right way. SD-WAN is very promising. They can provide the SD-WAN solution separately, but they will not take this approach because even the smallest firewall can support the features, so there is no need to have a separate service or appliance. They are following the right steps, and there is nothing to be improved. Feature-wise, I'm really satisfied with the new release, and the features they have added. For now, it's fine.

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Jordan De Sousa

Network Manager at a computer software company with 501-1,000 employees

Helped with the consolidation of tools and has a great dashboard

We have used different types of solutions. We had Cisco ASA for about 10 years, and then we switched to an on-site firewall to MX from Meraki, Cisco. For our cloud, we have Cisco Services Routers. The migration to the cloud has been a lot of work. Not all of our systems were compliant with being on the cloud so we had to work on some applications and delete some of them. For the old systems, we had to do extra work but for the newer systems, it was fine. The migration took around 18 months to migrate 99%. We had more than 2,000 on-prem firewall sites. Cisco helped with the migration to the cloud with the migration tool. Migrating MX was really easy and the tools helped us to migrate from the old ASA we had to the new MX. The cloud, firewalling, and CSR helped us from the data center on-premise approach to the cloud because at the time we didn't have a lot of experience with the cloud. It was easy to use the Cisco appliances in that space. I think that this solution has saved our IT staff time because of the ease of deployment. When I first started as a network engineer, it took a whole day to configure a firewall because of all the particularities you could potentially have at a site. I think that this solution saved our organization's time because security saves money because. At the end of the day, firewalls block threats. This solution helped with the consolidation of tools as we had all the observability tools in the solutions. Some 10 years ago we all had third-party solutions doing the observability. Now, we have the whole package and not only the firewall. We choose Cisco 10 or 20 years ago mostly because it was a market-leading solution. I also think it's because of MX's user-friendly solution that you can get on board easily. As far as CSA goes, I believe it's because you have a lot of features on the firewalls and it's the stability of course.

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Eddy Ramirez

IT Security Director at a financial services firm with 1,001-5,000 employees

Good interface and firewall capabilities and overall easy to use

The security has improved as we can isolate the network. We can do attrition prevention via a tool that comes with the solution. We can have a VPN solution in place for those that work from home, outside the network, in a secure manner. We also like that it offers good authentication. It offers radius-based authentication, which has been useful for the company. The main platform is under the Open VPN firewall. The solution has high availability. When we have different ISPs, we can actually load balance those links or actually put some priority or even classify the traffic that might go into one ISP or another.

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Quotes from Members

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

Pros

"The base firewall features are quite valuable to us."

"The solution is very, very easy to use."

"The multi-tenancy feature is most valuable. It integrates very well with FortiManager and FortiAnalyzer."

"LinkGreat firewall capabilities"

"The pricing is excellent. It's much less expensive than Cisco."

"The dashboard I have found the most valuable in Fortinet FortiGate."

"You can create multiple Virtual Domains (VDOMs), which are treated as separate firewall instances."

"It's user-friendly and easy to operate."

More Fortinet FortiGate pros

"They are easy to maintain."

"Cisco offers a great educational series to train users on their devices."

"I have not contacted technical support. There is a lot of information on the internet for troubleshooting. All you need to do is use a search engine and you will find the information you are looking for easily."

"Because of the deeper inspection it provides we have better security and sections that allow users broader access."

"Cisco ASA works out-of-the-box. With the setup wizard, it was easy to get it deployed quickly, even by novice IT users."

"The configuration support is very good. You can find a lot of configuration samples and troubleshooting tips on the internet, which is very good."

"The most important features are the intrusion prevention engine and the application visibility and control. The Snort feature in Firepower is also valuable."

"Cisco ASA has an okay CLI with a nice GUI."

More Cisco Secure Firewall pros

"The solution has high availability."

"It's more secure and more reliable."

"The IDS and IPS features are valuable. From the usability perspective, there is a lot of good documentation. As IT professionals, we found it very easy to configure the firewall. It was easy to configure and use."

"URL blocking, Wireguard, Tail Scale, Engine Blocker, and VPN are the most valuable features for me."

"The most valuable features are reporting, the Sensei plugin, and firewall capabilities."

"OPNsense is easy to scale when running on the hardware."

"I feel that its valuable features are that it is simple and free."

"The system in general is quite flexible."

More OPNsense pros

Cons

"This product needs to have an analysis feature, rather than having the analysis done through the integration of a different product."

"There's always something new that can be added or fixed."

"It should provide better visibility over the network and more information in the form of reports for the end users. Its installation should also be easier."

"FortiLink is the interface on the firewall that allows you to extend switch management across all of your switches in the network. The problem with it is that you can't use multiple interfaces unless you set them up in a lag. Only then you can run them. So, it forces you to use a core type of switch to propagate that management out to the rest of the switches, and then it is running the case at 200. It leaves you with 18 ports on the firewall because it is also a layer-three router that could also be used as a switch, but as soon as you do that, you can't really use them. They could do a little bit more clean up in the way the stacking interface works. Some use cases and the documentation on the FortiLink checking interface are a little outdated. I can find stuff on version 5 or more, but it is hard to find information on some of the newer firmware. The biggest thing I would like to see is some improvement in the switch management feature. I would like to be able to relegate some of the ports, which are on the firewall itself, to act as a switch to take advantage of those ports. Some of these firewalls have clarity ports on them. If I can use those, it would mean that I need to buy two less switches, which saves time. I get why they don't, but I would still like to see it because it would save a little bit of space in the server rack."

"The routing capability on the FortiGate devices has room for improvement."

"I think that the infrastructure for the VPN could be improved. The way that it is bundled also made it difficult to use and sell as it is too expensive."

"Fortinet Fortigate could benefit by simplifying some of their processes."

"Difficult to add or define, and not that easy to configure and manage."

More Fortinet FortiGate cons

"We had an event recently where we had inbound traffic for SIP and we experienced an attack against our SIP endpoint, such that they were able to successfully make calls out... Both CTR, which is gathering data from multiple solutions that the vendor provides, as well as the FMC events connection, did not show any of those connections because there was not a NAT inbound which said either allow it or deny it."

"The management usability and security of Cisco Firewall are based on Firepower Management Center, which is quite out of date compared to other vendors."

"It is hard to collaborate with our filtered environment."

"I have found that Cisco reporting capabilities are not as rich as other products, so the reporting could be improved."

"The only con that I have really seen with it is the reporting structure. FirePOWER is good. It has been a great help because, before that, it was not good at all."

"We see a lot of vendors in the market with a lot of niche products. I understand that it's difficult to cover everything, but making it more open for integration with other vendors would be a value add for Cisco."

"I would like it to be easier to work with and have a better user interface. It is not straightforward. You need to know the Cisco command-line interface."

"The most valuable features of the product are the VPN and the NextGen firewall features such as application control, URL filtering, etc."

More Cisco Secure Firewall cons

"OPNsense could improve by making the configuration more web-based rather than shell or command-line-based."

"Given that OPNsense plays a pivotal role as a firewall, safeguarding against various threats, having a reliable backup ensures uninterrupted protection even if unforeseen events impact the primary virtual machine."

"When using the solution at the beginning was difficult. There was a steep learning curve."

"The IPS solution could be more reliable."

"OPNsense struggles to handle large volumes of voice traffic, indicating scalability issues in that specific use case."

"The logging could improve in OPNsense."

"OPNsense showed me some problems when using it in different environments. The problem is integration with a virtual server."

"There is room for improvement in SSL inspection."

More OPNsense cons

Pricing and Cost Advice

"The cost of Fortinet FortiGate is competitive and not expensive compared to other enterprise- grade solutions. On average, the license cost per year is around seventy percent of the firewall's purchase price."

"The Indian market is different than the European and American markets. When you compare they need to be a bit more aggressive on pricing."

"The beauty is the price performance ratio is great with FortiGate. It provides all the features we needed and the price is comparable with others' firewalls. The price is quite competitive with the firewalls with similar features."

"The price of FortiGate is comparable to that of most other firewall solutions and is more affordable than Cisco."

"It has been two years. I don't remember the actual price, but it was affordable. We buy the boxes and then use the license for three years."

"This is not a cheap solution but it isn't expensive, either. It's a good solution for the right price."

"Fortinet FortiGate is expensive."

"Licensing for Fortinet FortiGate is on a yearly basis. Pricing for it is a bit high. It could be cheaper."

More Fortinet FortiGate pricing and cost advice

"There is room for improvement in the pricing when compared to the market. Although, when you compare the benefits of support from Cisco, you can adjust the value and it becomes comparable, because you usually need very good support. So you gain value there with this device."

"I think Cisco's price is in the right space now. They have discounts for customers at various levels. I think they're in the right spot. However, Cisco can be expensive when you factor in these additional features."

"We've compared it to other solutions, like WatchGuard and other types of firewalls in that same realm. Cisco ASAs are fairly priced and very competitive with them."

"The cost is a bit high compared to other solutions in the market."

"Licensing, recently, has been getting more complicated. In particular, the Smart Licensing that came out is quite complicated. I don't know what's going on.... They call it Smart, but it's complicated. I prefer the traditional license where you buy it once."

"The pricing structure for Cisco Secure Firewall can be challenging to manage."

"Cisco is always expensive, but you get what you pay for. It is expensive for a reason. It is a good solution, and good solutions cost money."

"The price is good."

More Cisco Secure Firewall pricing and cost advice

"The price of OPNsense is good."

"It's a free solution."

"I would rate the pricing three out of ten."

"It's not expensive."

"We are not paying any licensing fees. OPNsense is completely free for us."

"I've used the free version. My computer with two network cards at home allows me to try as many different software options as I want. I did pay for the license, but it was for the Zenarmor license, which is the packet inspection tool. They use AI for packet inspection, which integrates with OPNsense and pfSense."

"It is not an expensive product. Basically, I deployed it because it was the fastest solution to satisfy our needs in open source."

"Its pricing is unbeatable in comparison to other firewalls. You can have a small instance that could be €80 a month with the hardware underneath. Azure Firewall and FortiGate are out of the question at this price. If you are on a public cloud, you need the underlying infrastructure. Other than that, there is no additional cost. If you have it on-prem, you have to buy the server or the appliance. The hardware cost is replaced with the infrastructure cost in the cloud. You also have costs for the public IPs and underlying VMs, but that's not related to OPNsense. It would be the same for a FortiGate deployment on Azure. You need a FortiGate license, and you need the underlying infrastructure that scales up depending on your needs."

More OPNsense pricing and cost advice

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Comparison Review

it_user206346

Security Consultant at Webernetz.net - Network Security Consulting

Mar 11, 2015

Cisco ASA vs. Palo Alto Networks

Cisco ASA vs. Palo Alto: Management Goodies You often have comparisons of both firewalls concerning security components. Of course, a firewall must block attacks, scan for viruses, build VPNs, etc. However, in this post I am discussing the advantages and disadvantages from both vendors concerning…

Read full review

Top Industries

By visitors reading reviews

Educational Organization

22%

Computer Software Company

14%

Comms Service Provider

Manufacturing Company

Educational Organization

40%

Computer Software Company

13%

Manufacturing Company

Government

Computer Software Company

16%

Comms Service Provider

12%

Government

Educational Organization

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

Questions from the Community

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How does Cisco's ASA firewall compare with the Firepower NGFW?

It is easy to integrate Cisco ASA with other Cisco products and also other NAC solutions. When you understand the Cis...

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Which is better - Meraki MX or Cisco ASA Firewall?

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What is the difference between PfSense and OPNsense?

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What do you like most about OPNsense?

What I like the most about OPNsense is that it offers an easy-to-use dashboard for device management and control.

See all answers

What is your experience regarding pricing and costs for OPNsense?

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Comparisons

Sophos XG vs Fortinet FortiGate

Compared 23% of the time

Netgate pfSense vs Fortinet FortiGate

Compared 13% of the time

WatchGuard Firebox vs Fortinet FortiGate

Compared 5% of the time

Meraki MX vs Fortinet FortiGate

Compared 5% of the time

Sangfor NGAF vs Fortinet FortiGate

Compared 2% of the time

More Fortinet FortiGate Competitors

Palo Alto Networks WildFire vs Cisco Secure Firewall

Compared 10% of the time

Netgate pfSense vs Cisco Secure Firewall

Compared 6% of the time

Palo Alto Networks NG Firewalls vs Cisco Secure Firewall

Compared 4% of the time

Meraki MX vs Cisco Secure Firewall

Compared 4% of the time

Sophos XG vs Cisco Secure Firewall

Compared 3% of the time

More Cisco Secure Firewall Competitors

Netgate pfSense vs OPNsense

Compared 50% of the time

IPFire vs OPNsense

Compared 9% of the time

Sophos XG vs OPNsense

Compared 8% of the time

Untangle NG Firewall vs OPNsense

Compared 4% of the time

WatchGuard Firebox vs OPNsense

Compared 2% of the time

More OPNsense Competitors

Product Reports

Buyer's Guide

Fortinet FortiGate

February 2025

Download Fortinet FortiGate product report

Buyer's Guide

Cisco Secure Firewall

February 2025

Download Cisco Secure Firewall product report

Buyer's Guide

OPNsense

February 2025

Download OPNsense product report

Also Known As

FortiGate 60b, FortiGate 60c, FortiGate 80c, FortiGate 50b, FortiGate 200b, FortiGate 110c, FortiGate, Fortinet Firewall

Cisco Adaptive Security Appliance (ASA) Firewall, Cisco ASA NGFW, Adaptive Security Appliance, Cisco Sourcefire Firewalls, Cisco ASAv, Cisco Firepower NGFW Firewall

No data available

Overview

Fortinet FortiGate offers comprehensive network security and firewall protection across multiple locations. It effectively manages data traffic and secures environments with features like VPN, intrusion prevention, and UTM controls.

Organizations rely on Fortinet FortiGate for its robust integration with advanced security policies, ensuring significant protection for enterprises, cloud environments, and educational sectors. It facilitates network segmentation, application-level security, and authentication management, securing communication within and between locations such as branches and data centers. Its efficient SD-WAN and UTM features enable streamlined data management and enhanced threat protection capabilities. Users appreciate its centralized management, facilitating seamless operations across diverse environments.

What are the key features of Fortinet FortiGate?

VPN Capabilities: Ensure secure remote access for users and seamless site-to-site connections.
Intrusion Prevention System (IPS): Detect and prevent security threats and vulnerabilities.
Advanced Firewall: Offers robust firewalling with application control and web filtering.
SD-WAN: Optimizes application performance and enhances bandwidth management.
SSL VPN: Provides reliable and secure access for remote workers.

What benefits should users expect from Fortinet FortiGate?

High-performance Security: Delivers effective threat mitigation with high availability.
Centralized Management: Simplifies network operations with cloud-based management tools.
Detailed Analytics: Provides comprehensive insights into network activity and security threats.
Load Balancing: Ensures optimal resource distribution and traffic management.

Fortinet FortiGate is crucial in sectors like education, offering robust networks for secure data flow between campuses and facilitating remote learning. In enterprise environments, it allows efficient management of application traffic and security across multiple branches, while in the cloud, it seamlessly integrates with diverse platforms to enhance security infrastructure.

Fortinet

Cisco Secure Firewall stands as a robust and adaptable security solution, catering to organizations of all sizes. It's designed to shield networks from a diverse array of cyber threats, such as ransomware, malware, and phishing attacks. Beyond mere protection, it also offers secure access to corporate resources, beneficial for employees, partners, and customers alike. One of its key functions includes network segmentation, which serves to isolate critical assets and minimize the risk of lateral movement within the network.

The core features of Cisco Secure Firewall are multifaceted:

Advanced threat protection is achieved through a combination of intrusion prevention, malware detection, and URL filtering technologies.
For secure access, the firewall presents multiple options, including VPN, remote access, and single sign-on.
Its network segmentation capability is vital in creating barriers within the network to safeguard critical assets.
The firewall is scalable, effectively serving small businesses to large enterprises.
Management is streamlined through Cisco DNA Center, a central management system.

The benefits of deploying Cisco Secure Firewall are substantial. It significantly reduces the risk of cyberattacks, thereby enhancing the security posture of an organization. This security also translates into increased productivity, as secure access means uninterrupted work. Compliance with industry regulations is another advantage, as secure access and network segmentation align with many regulatory standards. Additionally, it helps in reducing IT costs by automating security tasks and simplifying management processes.

In practical scenarios, Cisco Secure Firewall finds diverse applications. It's instrumental in protecting branch offices from cyberattacks, securing remote access for various stakeholders, safeguarding cloud workloads, and segmenting networks to isolate sensitive areas.

User reviews from PeerSpot reflect an overall positive experience with the Cisco Secure Firewall. Users appreciate its ease of configuration, good management capabilities, robust protection, user-friendly interface, and scalability. However, some areas for improvement include better integration capabilities with other vendors, maturity, control over bandwidth for end-users, and addressing software bugs.

In summary, Cisco Secure Firewall is a comprehensive, versatile, and reliable security solution that effectively meets the security needs of various organizations. It offers a balance of advanced protection, user-friendly management, and scalability, making it a valuable asset in the realm of network security.

Cisco

OPNsense is widely used for firewall functionalities, intrusion detection, VPN and IPSec, content filtering, securing network traffic, and remote access. It protects internal networks and manages servers securely, suitable for small to medium-sized businesses.

OPNsense is a comprehensive firewall solution leveraging open-source technology. It integrates with third-party modules like WireGuard and CrowdSec, enhancing its security capabilities. Offering on-premises and cloud deployment, it features an intuitive graphical interface, advanced reporting, VPN functionality, IDS/IPS features, and high scalability. Users find it ideal for small businesses and home networks due to its stability and ease of use. Frequent updates and an active community support its continuous improvement. However, it needs advancements in VPN selection, scalability, and technical documentation. Enhanced high availability, threat intelligence, and integration with virtualization platforms are required. User feedback suggests improvements in connectivity, alerting, traffic monitoring, and antivirus protection.

What are the key features of OPNsense?

Strong Firewall: Robust firewall capabilities for securing network traffic.
Intrusion Detection and Prevention: Effective IDS/IPS for threat mitigation.
VPN Functionality: Comprehensive VPN support including WireGuard.
Content Filtering: DNS-level filtering for enhanced security.
Advanced Reporting: In-depth traffic analysis and reporting features.
High Scalability: Supports growing network demands.
Integration Capabilities: Works with third-party modules like CrowdSec.
Intuitive GUI: User-friendly graphical interface enhances usability.

What benefits should users look for in OPNsense reviews?

Security: High level of protection for internal networks.
Manageability: Easy management of servers and network traffic.
Cost-Effective: Open-source nature reduces costs.
Reliability: Stable performance suitable for small and medium-sized businesses.
Community Support: Active community and frequent updates.

OPNsense is implemented across various industries to secure network infrastructure and ensure reliable connectivity. In fintech, it safeguards sensitive financial data while maintaining compliance. Educational institutions deploy it to protect student information and enable secure remote learning environments. Healthcare organizations use it to secure patient data and comply with HIPAA regulations. By integrating with tools like WireGuard and CrowdSec, businesses enhance their cybersecurity posture and streamline network management, making OPNsense a versatile choice for diverse operational needs.

OPNsense

Sample Customers

Amazon Web Services, Microsoft, IBM, Cisco, Dell, HP, Oracle, Verizon, AT&T, T-Mobile, Sprint, Vodafone, Orange, BT Group, Telstra, Deutsche Telekom, Comcast, Time Warner Cable, CenturyLink, NTT Communications, Tata Communications, SoftBank, China Mobile, Singtel, Telus, Rogers Communications, Bell Canada, Telkom Indonesia, Telkom South Africa, Telmex, Telia Company, Telkom Kenya

There are more than one million Adaptive Security Appliances deployed globally. Top customers include First American Financial Corp., Genzyme, Frankfurt Airport, Hansgrohe SE, Rio Olympics, The French Laundry, Rackspace, and City of Tomorrow.

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.

Buyer's Guide

Cisco Secure Firewall vs. OPNsense

January 2025

Free Report: Cisco Secure Firewall vs. OPNsense

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