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Cisco Secure Firewall vs Zyxel Unified Security Gateway comparison

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Comparison Buyer's Guide

Executive Summary

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
Sponsored
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
592
Ranking in other categories
Secure Web Gateways (SWG) (2nd), Firewalls (1st), Intrusion Detection and Prevention Software (IDPS) (1st), Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st), ZTNA (1st), Unified Threat Management (UTM) (1st)
Cisco Secure Firewall
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
464
Ranking in other categories
Firewalls (4th), Cisco Security Portfolio (2nd)
Zyxel Unified Security Gateway
Average Rating
6.6
Reviews Sentiment
4.9
Number of Reviews
4
Ranking in other categories
Unified Threat Management (UTM) (12th)
 

Featured Reviews

JK
IP Network Security Specialist at MTN Ghana
Process-Level CPU Visibility: Introduce detailed CPU-usage metrics per subsystem (e.g., IPS engine, logging) so administrators can quickly identify and address performance spikes.
Analytics with FortiAnalyzer. Being able to pull in logs not just from our FortiGates but from all our other firewalls and then get them in one view has been a game changer. Whether I’m building an executive dashboard or doing a deep dive forensics session, I get everything I need without navigating consoles.Straightforward Application Control. FortiGate spots and blocks unwanted apps (eq. like BitTorrent or streaming services) with accuracy. Segmentation with VDOMs. We’ve carved our data center into four logical ‘mini-firewalls’ enterprise, core, billing, and WAF—all on one box. Each has its own rules and logs, and any traffic between them still gets inspected. It’s like having multiple appliances without the extra hardware. Always-Up-to-Date Threat Feeds. Daily signature updates and AI-driven threat sensing mean we’re blocking the latest vulnerabilities almost as soon as they’re announced.
RajeshKumar - PeerSpot reviewer
Network Consultant at a outsourcing company with 1,001-5,000 employees
Unified policies have strengthened zero-trust demos and automate rapid threat containment
Feedback and Improvement Areas – Cisco Secure Firewall (Customer Perspective) From a customer point of view, there are a few improvement areas observed while positioning Cisco Secure Firewall in competitive scenarios. 1. Dashboard & Visibility Enhancements Customers often compare firewall dashboards across different OEMs during evaluation. * Competing vendors typically provide more feature-rich and visually detailed dashboards. * There is a perception that Cisco dashboards still require enhancement in terms of visualization, consolidated reporting, and built-in analytics. * Some OEMs advertise additional security capabilities clearly within their publicly available data sheets, making competitive positioning easier. In comparison, Cisco sometimes references separate documentation or explains how certain capabilities (such as anti-spam or antivirus functionality) can be achieved through integration or ecosystem components rather than native, built-in features. This creates a perception gap during customer discussions. Improvement Opportunity: * Enhance dashboard capabilities. * Clearly articulate feature availability in public documentation and data sheets. * Reduce dependency on cross-referenced documentation for commonly compared features. 2. Virtual Firewall / Multi-Instance Capabilities in Lower Models Another competitive challenge relates to virtual firewall capabilities. * Several OEMs provide virtual firewall (VDOM-like) functionality in lower-end models. * In Cisco’s portfolio, multi-instance capability typically starts from higher-end platforms such as the 3K series or higher. * Customers looking for smaller deployments with logical segmentation are often forced to consider higher models, resulting in a price jump. Competitors also offer: * Compact hardware models * Dongle-based firewall appliances * Smaller entry-level products with virtual segmentation In Cisco’s case: * To achieve similar multi-instance functionality, customers must opt for higher-tier models. * This creates a significant pricing gap in entry-level or SMB deployments. This pricing difference becomes a key factor when customers compare solutions. If competitors offer a lower-cost model with virtual segmentation, and Cisco requires a higher platform investment, customers may lean toward alternative OEMs. 3. Documentation Gaps – OT Protocol Visibility In our lab environment, we have deployed Cisco Secure Firewall and are using Application Visibility and Control (AVC) for OT network monitoring. Observations: * OT protocols are clearly visible within application visibility. * The firewall successfully identifies and classifies OT traffic. However: * This capability is not clearly mentioned in publicly available documentation. * When a feature is available and functional, it should be explicitly documented in data sheets and feature guides. The need for third-party integration depends on what we are looking for. Here I am saying that the integration with Cisco NAC can be done because RTC functionality is only available with Cisco ISE and the firewall integration. For other ecosystems, if we use a NAC solution that is not Cisco, we can still integrate it for user authentication, such as with VPN user authentication. But in that case, we don't achieve the same functionality, such as RTC with other NAC solutions. This is one aspect. Another part is that if we are using it, it always happens with some NAC solutions because we have Cisco NAC and Cisco firewall; we want consistent policy across the network, whether the user is on-prem or using VPN services. If this is a unified OEM solution, in that case, we require an agent, such as the Cisco Secure Client. That allows us to easily check the posture status of the remote user and connect to the network effortlessly. But if we are using a third-party solution, we can't achieve that. From a SIEM perspective, certain prerequisites must be fulfilled before integration with Cisco Secure Firewall can be completed. The feasibility of integration depends on the capabilities of the SIEM platform. If the SIEM solution supports the required APIs and event handling mechanisms, similar functionality can be achieved. Therefore, integration itself is generally not the challenge; the key consideration is the desired security outcome within the overall ecosystem. If the customer does not have a SIEM solution and intends to automate quarantine actions or enforce restricted access for users, a Network Access Control (NAC) solution becomes mandatory. In this scenario, the recommended NAC solution is Cisco Identity Services Engine (Cisco ISE). Automated quarantine and dynamic access control workflows are dependent on NAC capabilities. From a feature enhancement perspective for Cisco Secure Firewall, deeper NAC-driven integration adds significant value. 1. TrustSec / Tag-Based Policy Enforcement Cisco ISE supports Cisco TrustSec, which enables Security Group Tag (SGT)-based segmentation. * In traditional (legacy) networks, firewall policies are created based on IP addresses. * With TrustSec, policies are defined based on user identity, group membership, and security tags instead of IP subnets. * When users authenticate to the network, Cisco ISE assigns Security Group Tags (SGTs). * These tags are shared with Cisco Secure Firewall. * The firewall then enforces policies based on SGT-to-SGT rules rather than IP-to-IP rules. Benefits: * Significant reduction in the number of firewall rules * Simplified policy management * Improved scalability * Easier implementation of role-based access control This integration enhances operational efficiency and security posture. 2. Rapid Threat Containment (RTC) Another key capability is Rapid Threat Containment (RTC). If Cisco Secure Firewall detects malicious activity—such as malware download attempts identified via signature-based or advanced threat detection—it can notify Cisco ISE about the compromised endpoint. Based on this input: * Cisco ISE can automatically quarantine the user * The endpoint can be moved to a restricted VLAN * Access can be dynamically limited without manual intervention This automated workflow ensures faster response time and reduces the risk of lateral movement within the network. 3. VPN and Posture Assessment This functionality is not limited to wired or LAN users. For VPN users: * Authentication can be integrated with third-party NAC solutions. * However, if posture assessment (device compliance checking) is required in addition to authentication, Cisco ISE integration with Cisco Secure Firewall becomes essential. Cisco ISE enables: * Endpoint posture validation * Dynamic policy assignment * Automated remediation workflows
reviewer2399337 - PeerSpot reviewer
Sales and technical consultant at a manufacturing company with 10,001+ employees
User has benefited from stable performance and effective completion of security tasks
I use it mostly for VPN and for some firewall solutions When considering my main use case with VPN, I can say that I got the Zyxel Unified Security Gateway, and it works fine. However, we are thinking about using a different solution based on open source because Zyxel Unified Security Gateway…

Quotes from Members

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

Pros

"It's features are highly customizable."
"The most valuable features of Fortinet FortiGate are the different types of profiling. It has been the most effective for me. The WAF and the antivirus profile are the most effective in network protection."
"Load Sharing VDOM Security Profiles Vulnerability Assessment"
"The main benefit is the grouping of our security monitoring."
"One of the most valuable features of FortiGate Next Generation Firewall (NGFW) is the ease of usability it offers."
"Most of the customers look at Cisco, Cisco Meraki, Palo Alto, and Fortinet, and they go with Fortinet because of the best performance per dollar spent and ease of licensing and management."
"Fortinet FortiGate is among the best options in the market."
"The CLI is robust and powerful, enabling rapid, consistent changes via SSH."
"The application and user-visibility and control, along with very powerful IPS and malware protection, enables our clients to secure their data centers and internet perimeter in a much better way."
"Since the deployment, we haven't seen the risk we encountered before."
"This solution made our organization more secure and gave us better control."
"In general, the management of our infrastructure is now easy; it has been a good experience, I don't intend to change it because it's giving me the service I need, and in terms of money, it has probably saved us over a million dollars a year, so the investment is totally worth it."
"Apart from those four things, the Cisco ASA with FirePOWER Services solution works well, provides great insight, applies Advanced Malware Protection strongly, and shuts down a ton of illegitimate connections before they can attack."
"Netting is one of the best features. We can modify it in different ways. Site-to-site VPN is also an awesome feature of Cisco ASA. The biggest advantage of Cisco products is technical support. They provide the best technical support."
"The fact that it's a full inspection firewall."
"Filtering is the best feature, as I have gotten used to using it."
"This is a capable appliance and the standard features work well for us."
"The Zyxel Unified Security Gateway solution is stable and does its job effectively."
"The most valuable features of the solution stem from web filtering, malware protection, and antivirus."
"The solution can scale well."
"The cost is very low."
 

Cons

"While the security is good, we'd always prefer if it was even better to ensure protection."
"As far as wanting more scalability or things in the network diagram, it's going to cost you."
"The solution could be more user friendly."
"I would like the deployment and integration of this product to be easier. We should be able to deploy the features more easily and have different types of access. It should be easier to integrate. Currently, we need to develop APIs to use this interface."
"The platform's interface could improve."
"In the past I encountered serious bug regarding SCTP and GTP supports."
"The product’s price is high."
"We had some issues in the beginning while setting it up, but after doing the firmware update, it is working fine."
"Managing various product integrations, such as Umbrella, is challenging."
"Multiple WAN connections: Even though you can implement more than one interface to outside connections, it is lacking on load balances, etc."
"It should have packets, deep level inspections and controls, like the features which other IPS solutions used to have."
"The product crashes. We have a cluster of firewalls and we regularly get failovers."
"We have had a number of bugs on the FirePOWER software across several clients which have been very inconsistent and have affected our ability to deliver."
"I would like to see more configurable feature parity with Cisco ASA, which is the legacy product that Cisco is moving away from. When configuring remote access VPN, not all of the options are there. You have to download another tool, which means that the configuration takes a little bit longer with Cisco Secure Firewall. Though it's getting there, there are still some features lagging behind."
"With regards to stability, we had a critical bug come out during our evaluation... not good."
"Cisco should work on ASDM. One of the biggest drawbacks of Cisco ASA is ASDM GUI. Cisco should improve the ASDM GUI. The configuration through ASDM is really difficult as compared to CLI. Sometimes when you are doing the configuration in ASDM, it suddenly crashes. It also crashes while pushing a policy. Cisco should really work on this."
"The product has some scalability and data management issues where improvements are required."
"I have never seen it in any company that I've worked with before, and I would advise other companies not to buy it."
"Although manageable, the user interface is a little bit slow and could be improved. The advanced UI allows me to do whatever I want, but this is where the issue of speed exists."
"Sometimes it reboots when you least expect it, and that's the main issue."
 

Pricing and Cost Advice

"Its pricing is fine. It is on a yearly basis. Other than the licensing fee, there is no extra fee."
"Fortigate's pricing is competitive."
"The solution's pricing is competitive."
"On a scale of one being cheap and ten being expensive, I rate the tool's price as an eight."
"There is a need to pay for a license for the product."
"We have the full version of Fortinet FortiGate and we are on a three-year contract with a commitment of five years."
"I think that the pricing is fair."
"Price-wise, it's at a good price point for our market."
"It was initially heavy on my pocket, but it soon actualised its worth."
"We paid about $7,000 for the Cisco firewall, plus another small Cisco router and the lead switch. It was under the combined license. It's a final agreement."
"It is considered on the "high end" of the spectrum."
"It's pretty competitive. If they could make it cheaper, it would be great. You always want cheaper, but relative to the performance capabilities of the firewall and relative to what you get, it's fair. It's not the cheapest in the world, but you get an excellent product for that price."
"I wish there was an easier way to license the product in closed environments. I have worked in a number of closed environments, then it is a lot of head scratching. I know that we could put servers in these networks and that would help with the licensing. I have never been in a situation where we connected multiple networks, i.e., having an external network as well as an internal network, as those kinds of solutions are not always the best. I think licensing is always a headache for everyone, and I don't know if there is a simple solution."
"We normally license on a yearly basis. The hardware procurement cost should be considered. If you're virtual maybe that cost is eradicated and just the licensing cost is applied. If you have hardware the cost must be covered by you. All the shipping charges will be paid by you also. I don't thing there are any other hidden charges though."
"There are licensing costs."
"The Cisco licensing agreement in Bangladesh is different than the one in India and in Dubai. It is not a problem, but if you want to subscribe to the yearly subscription, the original cost is really high. Also, if you go for an anti-virus, you pay for an additional yearly subscription."
"The price of Zyxel Unified Security Gateway is good compared to other similar products in the market."
"This gateway is pretty cheap."
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Comparison Review

it_user206346 - PeerSpot reviewer
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…
 

Top Industries

By visitors reading reviews
Comms Service Provider
10%
Computer Software Company
9%
Manufacturing Company
9%
Financial Services Firm
7%
Construction Company
10%
Financial Services Firm
9%
Manufacturing Company
9%
Computer Software Company
8%
Comms Service Provider
19%
Outsourcing Company
8%
Financial Services Firm
7%
Computer Software Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business369
Midsize Enterprise139
Large Enterprise195
By reviewers
Company SizeCount
Small Business192
Midsize Enterprise130
Large Enterprise236
No data available
 

Questions from the Community

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What is your experience regarding pricing and costs for Zyxel Unified Security Gateway?
I cannot definitively comment on whether Zyxel Unified Security Gateway is an affordable product as I haven't done co...
What needs improvement with Zyxel Unified Security Gateway?
The integration capability is quite challenging. The system is very complicated, and many features are hidden. I'm lo...
What is your primary use case for Zyxel Unified Security Gateway?
I use it mostly for VPN and for some firewall solutions. When considering my main use case with VPN, I can say that I...
 

Also Known As

Fortinet FortiGate Next-Generation Firewall
Cisco Adaptive Security Appliance (ASA) Firewall, Cisco ASA NGFW, Adaptive Security Appliance, Cisco Sourcefire Firewalls, Cisco ASAv, Cisco Firepower NGFW Firewall, Cisco Secure Firewall ASA Virtual - BYOL
No data available
 

Overview

 

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.
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