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What are firewall logs and why they are important Select a size Which network Can AlgoSec be used for continuous compliance monitoring? Yes, AlgoSec supports continuous compliance monitoring. As organizations adapt their security policies to meet emerging threats and address new vulnerabilities, they must constantly verify these changes against the compliance frameworks they subscribe to. AlgoSec can generate risk assessment reports and conduct internal audits on-demand, allowing compliance officers to monitor compliance performance in real-time. Security professionals can also use AlgoSec to preview and simulate proposed changes to the organization’s security policies. This gives compliance officers a valuable degree of lead-time before planned changes impact regulatory guidelines and allows for continuous real-time monitoring. What are firewall logs and why are they important? Network setups of the past consisted solely of servers in a server closet. Today, modern IT infrastructure consists of three main components: on-premises data centers, public clouds, and their connecting infrastructure. This new reality has created complex systems with multiple challenges. Regulations have become stricter, and organizations are under pressure to detect security threats fast. When faced with an issue, network security professionals must pinpoint the root cause, and to do that, they need evidence—which means investigating firewall logs. What is a firewall log? A firewall log is a record of the network connections (allowed and blocked) that a firewall inspects, capturing each event between your systems and the internet. Depending on the configuration, a firewall log may include all inspected traffic or only what the firewall allows to pass into the environment (what “gets past” the firewall). Each entry of a firewall log will specify the following data: Field Description Timestamp Exact date and time traffic was processed Action Decision made by the firewall (Allow, Deny, Drop) Rule ID Specific firewall rule that triggered the action Source IP & Port IP address and port from where traffic originated Destination IP & Port IP address and port that the traffic was trying to reach Protocol Network protocol used (TCP, UDP, ICMP) Bytes/Session Amount of data transferred during a session Zones Source and destination security zones (Trust, Untrust, DMZ) Beyond the question of “What is a firewall log?” there is also the question of where to store them. Organizations have a few options here. Firewall logs can: Stay on the firewall device Go to a basic syslog server for storage Undergo analysis via a security information and event management (SIEM) tool What is a firewall review? The process of reviewing a firewall is akin to a scheduled maintenance procedure that updates the rulebook of your firewall system. Things to be on the lookout for include: Duplicate rules Outdated server rules Overly broad rules that can lead to security vulnerabilities What is a firewall log review? Ready to play detective? Because a firewall log review requires just that. Analyzing firewall data is a continuous process of extracting relevant information from the firewall logs, i.e., the firewall’s own journal of events.. The key is to identify specific patterns that indicate security incidents, performance issues, or non-compliance events. This, in turn, requires centralizing logs with synchronized device clocks so that timelines line up (i.e., NTP across firewalls, servers, and your SIEM) and putting controls in place to preserve log integrity. How to interpret firewall logs in 6 steps So now that it is clear what a firewall log is—as well as how to store these logs and review them—the next step is knowing how to interpret them. Successfully extracting the necessary data from your firewall logs is a six-step process: Collect logs in one place: The central system needs to receive logs from all firewalls that extend from the data center to the cloud. Each entry missing from your logs allows malicious actors to remain unseen, i.e., pose an unknown threat.. Figure out what's normal: To detect abnormal behavior, you must first create a baseline for normal activity, i.e., typical traffic patterns. Hunt for suspicious patterns: The official investigation begins! What to flag? Network scanning activity from a single IP address that attempts to access multiple ports and internal devices and makes scheduled connections to unverified external servers (beaconing). Add context: Context turns raw events into decisions. Enrich IPs and ports from your logs with: Asset inventory: What system and business app is this? User directories: Who owns/uses it? Threat intelligence: Is the source/destination risky? This enrichment helps determine impact and priority—not just “who/what,” but whether the activity is expected, whether the system is critical, and how urgently you need to respond. Investigate and act: Trigger an incident response plan: Validate findings Contain the incident (isolate the host, block indicators at the firewall). Collect forensics (packet captures, memory snapshot, log preservation) Eradicate the threat Recover systems, operations, and data (patches, credential resets, rule updates) Notify stakeholders Document the case for post‑incident review. Measure and improve: Learn from your results. Identify rules that are creating too much noise and clean them up. Most importantly, track how long it takes you to respond to incidents you find in your logs. How does AlgoSec help with firewall logs? Firewall log management across hybrid environments requires more than manual monitoring. It demands contextual understanding, automated processes, and permanent security measures. AlgoSec offers multiple features to combine all these components. It empowers your team to not only fully grasp what firewall logs are and their importance, but also helps you transition from event analysis to evidence-based remediation: AlgoSec Horizon : Security policy management via an approach based on business application, not a specific device. Offers complete monitoring of app connections between data centers and clouds, automated policy updates, and continuous compliance monitoring, connecting log traffic to actual application operations. Horizon Security Analyzer : Complete visibility into all firewalls to detect dangerous or unneeded rules. Optimizes rule bases by focusing on essential risk-related elements, resulting in less log data, improved signal quality, and faster review processes. Horizon FireFlow : Issue detection and response based on log data. Leverages automated workflows to execute risk and compliance assessments pre-deployment, complete with documentation; integrates with current ITSM systems (e.g., ServiceNow, BMC Remedy) so teams can perform change management tasks within a familiar environment. AlgoSec Cloud Enterprise (ACE) : A single policy framework for cloud and hybrid systems. Enables automated security group and cloud firewall rule management; performs 150+ cloud policy risk checks to deliver application-specific insights from cloud logs. Now is the time to convert your firewall logs into valuable business decisions. Request a demo to see AlgoSec in action today. 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Discover how global customers use Algosec to enhance their network security, streamline operations, and ensure continuous compliance. Our customers Financial Services Read the story Read the story Read the story Read the story Read the story Read the story Read the story Read the story Show more We empower the world’s most complex organizations to gain visibility, reduce risk and process changes at zero-touch across the hybrid network. NCR Nationwide Insurance Testimonial See what people who use AlgoSec have to say about it Read customers stories Filter by industry All industries Energy and Utilities Read the story Read the story Read the story Read the story Read the story Read the story Read the story Read the story Show more Government Read the story Read the story Read the story Read the story Read the story Read the story Read the story Read the story Show more Healthcare & Pharmaceuticals Read the story Read the story Read the story Read the story Read the story Read the story Read the story Read the story Read the story Read the story Read the story Show more Motor Vehicles Read the story Read the story Read the story Read the story Read the story Read the story Show more Technology Read the story Read the story Show more Retail and Consumer Goods Read the story Read the story Read the story Read the story Read the story Read the story Show more Telecom, IT, MSSP Read the story Read the story Read the story Read the story Read the story Read the story Read the story Read the story Show more Transportation Read the story Show more Schedule time with one of our experts Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Continue

Learn best practices to secure your cloud environment and deliver applications securely Webinars Master the Zero Trust strategy for improved cybersecurity Learn how to implement zero trust security into your business In today’s digital world, cyber threats are becoming more complex and sophisticated. Businesses must adopt a proactive approach to cybersecurity to protect their sensitive data and systems. This is where zero trust security comes in – a security model that requires every user, device, and application to be verified before granting access. If you’re looking to implement zero trust security in your business or want to know more about how it works, you’ll want to watch this webinar. AlgoSec co-Founder and CTO Avishai Wool will discuss the benefits of zero trust security and provide you with practical tips on how to implement this security model in your organization. March 15, 2023 Prof. Avishai Wool CTO & Co Founder AlgoSec Relevant resources Protecting Your Network’s Precious Jewels with Micro-Segmentation, Kyle Wickert, AlgoSec Watch Video Professor Wool - Introduction to Microsegmentation Watch Video Five Practical Steps to Implementing a Zero-Trust Network Keep Reading Choose a better way to manage your network Choose a better way to manage your network Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Continue

Security Policy Management with Professor Wool Network Segmentation Course Network Segmentation with Professor Wool is a whiteboard-style series of lessons that examine the challenges of and provide technical tips for segmenting networks for security across in evolving enterprise networks and data centers. Lesson 1 In this lesson, Professor Wool presents a simple yet highly effective strategy to help you future proof your network segmentation policy against future changes. Using the concept of a diamond, Professor Wool shows how you can define very specific rules at each end point of the diamond and broader policies in the middle. This will significantly reduce the time and effort needed to work on change requests—without compromising on security in any way. How to Structure Your Security Policy in a Segmented Network Watch Lesson 2 In this lesson, Professor Wool recommends a simple matrix to define network segments and security zones, and the traffic allowed to and from each zone. This matrix can then be used to immediately assess a firewall change requests as well as validate that existing security policies have been implemented correctly. How to Define, Simplify and Enforce Network Segmentation and Security Zoning Watch Lesson 3 In this lesson, Professor Wool examines common missteps when organizations create security zones and best practices to consider for an improved defense. Common Mistakes and Best Practices for Designing Network Security Zones Watch Lesson 4 In this lesson, Professor Wool provides recommendations for how to design your network for optimal segmentation in two typical scenarios: Allowing traffic from an external partner application into the corporate data center, and structuring network traffic flows within the data center to force specific flows with more check points for better security. Data Center Segmentation Best Practices Watch Lesson 5 In this lesson, Professor Wool presents some of the challenges of setting up security policies for East-West traffic. On the one hand these policies need to allow all legitimate business traffic to flow through the data center, yet on the other hand they need to be very specific so as to block everything else. Watch this video to find out more. The Challenges of East West Traffic Discovery for Network Segmentation Watch Lesson 6 Following on from Professor Wool’s previous lesson, this lesson presents a step-by-step process for writing firewall policies for East-West traffic. This involves an iterative process of discovering, identifying and then writing explicit ‘allow’ rules for all valid business traffic that goes through the network segment. Watch this video to find out more. How to Build Firewall Policies for East West Traffic Watch Lesson 7 How to Prepare for Network Segmentation by Identifying the Segment Borders Watch Have a Question for Professor Wool? Ask him now Choose a better way to manage your network Choose a better way to manage your network Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Continue

Protecting an organization against every conceivable threat is rarely possible. There is a practically unlimited number of potential threats in the world, and security leaders don’t have unlimited resources available to address them. Prioritizing risks associated with more severe potential impact allows leaders to optimize cybersecurity decision-making and improve the organization’s security posture. Cybersecurity risk management is important because many security measures come with large... Uncategorized Risk Management in Network Security: 7 Best Practices for 2024 Tsippi Dach 2 min read Tsippi Dach Short bio about author here Lorem ipsum dolor sit amet consectetur. Vitae donec tincidunt elementum quam laoreet duis sit enim. Duis mattis velit sit leo diam. Tags Share this article 1/26/24 Published Protecting an organization against every conceivable threat is rarely possible. There is a practically unlimited number of potential threats in the world, and security leaders don’t have unlimited resources available to address them. Prioritizing risks associated with more severe potential impact allows leaders to optimize cybersecurity decision-making and improve the organization’s security posture. Cybersecurity risk management is important because many security measures come with large costs. Before you can implement security controls designed to protect against cyberattacks and other potential risks, you must convince key stakeholders to support the project. Having a structured approach to cyber risk management lets you demonstrate exactly how your proposed changes impact the organization’s security risk profile. This makes it much easier to calculate the return on cybersecurity investment – making it a valuable tool when communicating with board members and executives. Here are seven tips every security leader should keep in mind when creating a risk management strategy: Cultivate a security-conscious risk management culture Use risk registers to describe potential risks in detail Prioritize proactive, low-cost risk remediation when possible Treat risk management as an ongoing process Invest in penetration testing to discover new vulnerabilities Demonstrate risk tolerance by implementing the NIST Cybersecurity Framework Don’t forget to consider false positives in your risk assessment What is a Risk Management Strategy? The first step to creating a comprehensive risk management plan is defining risk. According to the International Organization for Standardization (ISO) risk is “the effect of uncertainty on objectives”. This definition is accurate, but its scope is too wide. Uncertainty is everywhere, including things like market conditions, natural disasters, or even traffic jams. As a cybersecurity leader, your risk management process is more narrowly focused on managing risks to information systems, protecting sensitive data, and preventing unauthorized access. Your risk management program should focus on identifying these risks, assessing their potential impact, and creating detailed plans for addressing them. This might include deploying tools for detecting cyberattacks, implementing policies to prevent them, or investing in incident response and remediation tools to help you recover from them after they occur. In many cases, you’ll be doing all of these things at once. Crucially, the information you uncover in your cybersecurity risk assessment will help you prioritize these initiatives and decide how much to spend on them. Your risk management framework will provide you with the insight you need to address high-risk, high-impact cybersecurity threats first and manage low-risk, low-impact threats later on. 7 Tips for Creating a Comprehensive Risk Management Strategy 1. Cultivate a security-conscious risk management culture No CISO can mitigate security risks on their own. Every employee counts on their colleagues, partners, and supervisors to keep sensitive data secure and prevent data breaches. Creating a risk management strategy is just one part of the process of developing a security-conscious culture that informs risk-based decision-making. This is important because many employees have to make decisions that impact security on a daily basis. Not all of these decisions are critical-severity security scenarios, but even small choices can influence the way the entire organization handles risk. For example, most organizations list their employees on LinkedIn. This is not a security threat on its own, but it can contribute to security risks associated with phishing attacks and social engineering . Cybercriminals may create spoof emails inviting employees to fake webinars hosted by well-known employees, and use the malicious link to infect employee devices with malware. Cultivating a risk management culture won’t stop these threats from happening, but it might motivate employees to reach out when they suspect something is wrong. This gives security teams much greater visibility into potential risks as they occur, and increases the chance you’ll detect and mitigate threats before they launch active cyberattacks. 2. Use risk registers to describe potential risks in detail A risk register is a project management tool that describes risks that could disrupt a project during execution. Project managers typically create the register during the project planning phase and then refer to it throughout execution. A risk register typically uses the following characteristics to describe individual risks: Description : A brief overview of the risk itself. Category: The formal classification of the risk and what it affects. Likelihood: How likely this risk is to take place. Analysis: What would happen if this risk occurred. Mitigation: What would the team need to do to respond in this scenario. Priority: How critical is this risk compared to others. The same logic applies to business initiatives both large and small. Using a risk register can help you identify and control unexpected occurrences that may derail the organization’s ongoing projects. If these projects are actively supervised by a project manager, risk registers should already exist for them. However, there may be many initiatives, tasks, and projects that do not have risk registers. In these cases, you may need to create them yourself. Part of the overall risk assessment process should include finding and consolidating these risk registers to get an idea of the kinds of disruptions that can take place at every level of the organization. You may find patterns in the types of security risks that you find described in multiple risk registers. This information should help you evaluate the business impact of common risks and find ways to mitigate those risks effectively. 3. Prioritize proactive, low-cost risk remediation when possible Your organization can’t afford to prevent every single risk there is. That would require an unlimited budget and on-demand access to technical specialist expertise. However, you can prevent certain high-impact risks using proactive, low-cost policies that can make a significant difference in your overall security posture. You should take these opportunities when they present themselves. Password policies are a common example. Many organizations do not have sufficiently robust password policies in place. Cybercriminals know this –that’s why dictionary-based credential attacks still occur. If employees are reusing passwords across accounts or saving them onto their devices in plaintext, it’s only a matter of time before hackers notice. At the same time, upgrading a password policy is not an especially expensive task. Even deploying an enterprise-wide password manager and investing in additional training may be several orders of magnitude cheaper than implementing a new SIEM or similarly complex security platform. Your cybersecurity risk assessment will likely uncover many opportunities like this one. Take a close look at things like password policies, change management , and security patch update procedures and look for easy, low-cost projects that can provide immediate security benefits without breaking your budget. Once you address these issues, you will be in a much better position to pursue larger, more elaborate security implementations. 4. Treat risk management as an ongoing process Every year, cybercriminals leverage new tactics and techniques against their victims. Your organization’s security team must be ready to address the risks of emerging malware, AI-enhanced phishing messages, elaborate supply chain attacks, and more. As hackers improve their attack methodologies, your organization’s risk profile shifts. As the level of risk changes, your approach to information security must change as well. This means developing standards and controls that adjust according to your organization’s actual information security risk environment. Risk analysis should not be a one-time event, but a continuous one that delivers timely results about where your organization is today – and where it may be in the future. For example, many security teams treat firewall configuration and management as a one-time process. This leaves them vulnerable to emerging threats that they may not have known about during the initial deployment. Part of your risk management strategy should include verifying existing security solutions and protecting them from new and emerging risks. 5. Invest in penetration testing to discover new vulnerabilities There is more to discovering new risks than mapping your organization’s assets to known vulnerabilities and historical data breaches. You may be vulnerable to zero-day exploits and other weaknesses that won’t be immediately apparent. Penetration testing will help you discover and assess risks that you can’t find out about otherwise. Penetration testing mitigates risk by pinpointing vulnerabilities in your environment and showing how hackers could exploit them. Your penetration testing team will provide a comprehensive report showing you what assets were compromised and how. You can then use this information to close those security gaps and build a stronger security posture as a result. There are multiple kinds of penetration testing. Depending on your specific scenario and environment, you may invest in: External network penetration testing focuses on the defenses your organization deploys on internet-facing assets and equipment. The security of any business application exposed to the public may be assessed through this kind of test. Internal network penetration testing determines how cybercriminals may impact the organization after they gain access to your system and begin moving laterally through it. This also applies to malicious insiders and compromised credential attacks. Social engineering testing looks specifically at how employees respond to attackers impersonating customers, third-party vendors, and internal authority figures. This will help you identify risks associated with employee security training . Web application testing focuses on your organization’s web-hosted applications. This can provide deep insight into how secure your web applications are, and whether they can be leveraged to leak sensitive information. 6. Demonstrate risk tolerance by implementing the NIST Cybersecurity Framework The National Institute of Standards and Technology publishes one of the industry’s most important compliance frameworks for cybersecurity risk mitigation. Unlike similar frameworks like PCI DSS and GDPR, the NIST Cybersecurity Framework is voluntary – you are free to choose when and how you implement its controls in your organization. This set of security controls includes a comprehensive, flexible approach to risk management. It integrates risk management techniques across multiple disciplines and combines them into an effective set of standards any organization can follow. As of 2023, the NIST Risk Management Framework focuses on seven steps: Prepare the organization to change the way it secures its information technology solutions. Categorize each system and the type of information it processes according to a risk and impact analysis/ Select which NIST SP 800-53 controls offer the best data protection for the environment. Implement controls and document their deployment. Assess whether the correct controls are in place and operating as intended. Authorize the implementation in partnership with executives, stakeholders, and IT decision-makers. Monitor control implementations and IT systems to assess their effectiveness and discover emerging risks. 7. Don’t forget to consider false positives in your risk assessment False positives refer to vulnerabilities and activity alerts that have been incorrectly flagged. They can take many forms during the cybersecurity risk assessment process – from vulnerabilities that don’t apply to your organization’s actual tech stack to legitimate traffic getting blocked by firewalls. False positives can impact risk assessments in many ways. The most obvious problem they present is skewing your assessment results. This may lead to you prioritizing security controls against threats that aren’t there. If these controls are expensive or time-consuming to deploy, you may end up having an uncomfortable conversation with key stakeholders and decision-makers later on. However, false positives are also a source of security risks. This is especially true with automated systems like next-generation firewalls , extended detection and response (XDR) solutions, and Security Orchestration, Automation, and Response (SOAR) platforms. Imagine one of these systems detects an outgoing video call from your organization. It flags the connection as suspicious and begins investigating it. It discovers the call is being made from an unusual location and contains confidential data, so it blocks the call and terminates the connection. This could be a case of data exfiltration, or it could be the company CEO presenting a report to stockholders while traveling. Most risk assessments don’t explore the potential risk of blocking high-level executive communications or other legitimate communications due to false positives. Use AlgoSec to Identify and Assess Network Security Risks More Accurately Building a comprehensive risk management strategy is not an easy task. It involves carefully observing the way your organization does business and predicting how cybercriminals may exploit those processes. It demands familiarity with almost every task, process, and technology the organization uses, and the ability to simulate attack scenarios from multiple different angles. There is no need to accomplish these steps manually. Risk management platforms like AlgoSec’s Horizon Security Analyzer can help you map business applications throughout your network and explore attack simulations with detailed “what-if” scenarios. Use Horizon Security Analyzer to gain deep insight into how your organization would actually respond to security incidents and unpredictable events, then use those insights to generate a more complete risk management approach. Schedule a demo Related Articles Q1 at AlgoSec: What innovations and milestones defined our start to 2026? AlgoSec Reviews Mar 19, 2023 · 2 min read 2025 in review: What innovations and milestones defined AlgoSec’s transformative year in 2025? AlgoSec Reviews Mar 19, 2023 · 2 min read Navigating Compliance in the Cloud AlgoSec Cloud Mar 19, 2023 · 2 min read Speak to one of our experts Speak to one of our experts Work email* First name* Last name* Company* country* Select country... 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The company received an 89 percent Willingness to Recommend score based on reviews AlgoSec Recognized with Established Vendor Designation in 2024 Gartner® Peer Insights™ Voice of the Customer for Network Automation Platforms The company received an 89 percent Willingness to Recommend score based on reviews June 11, 2024 Speak to one of our experts RIDGEFIELD PARK, NJ – June 11, 2024 – AlgoSec , a global cybersecurity leader, today announced it has been named an Established Vendor in the 2024 Gartner Peer Insights Voice of the Customer for Network Automation Platforms. The Voice of the Customer report synthesizes Gartner Peer Insights’ reviews into insights for IT decision makers. The report details that 89% of AlgoSec end-users are willing to recommend its solutions. AlgoSec received a composite rating of 4.3 based on objective reviews by validated users and customers on: Product Capabilities (4.6/5), Sales Experience (4.45), Deployment Experience (4.6/5) and Support Experience (4.5/5). “The expansion of networks from the data center to cloud and SASE architectures adds new levels of complexity that demand next-generation network security to ensure critical business applications don’t expose organizations to added risk. At the same time, orchestration and automation are vital to keep pace in a constantly evolving landscape,” said Avishai Wool , Chief Technology Officer and Co-Founder, AlgoSec. “Gartner’s Established Partner designation underscores AlgoSec’s commitment to guiding organizations on their network automation journey. Our certified framework brings together solid security policies, ongoing training, smart technology investments and collaboration between internal and external stakeholders.” Achieving IT security and compliance goals, at scale, is only possible through extensive integration options, total visibility and intelligent automation. The AlgoSec platform is purposely built to simplify and automate security policy management on-premise and in the cloud. Integrated change management automation monitors if security processes remain effective as organization’s requirements evolve, often resulting in real-time implementation of policy changes vs. days. This level of automation frees up team members and resources to focus on what matters most: ensuring the network is secure. To learn more visit: https://www.algosec.com/products/fireflow/ About the Report Gartner Peer Insights Voice of the Customer for Network Automation Platforms is a document synthesizing Gartner Peer Insights’ reviews into insights for IT decision makers. This aggregated peer perspective, along with the individual detailed reviews, is complementary to Gartner expert research and can play a key role in your buying process, as it focuses on direct peer experiences of implementing and operating a solution. In this document, only vendors with 20 or more eligible published reviews during the specified 18-month submission period are included. About AlgoSec AlgoSec, a global cybersecurity leader, empowers organizations to secure application connectivity and cloud-native applications throughout their multi-cloud and hybrid network. Trusted by more than 1,800 of the world’s leading organizations, AlgoSec’s application-centric approach enables to securely accelerate business application deployment by centrally managing application connectivity and security policies across the public clouds, private clouds, containers, and on-premises networks. Using its unique vendor-agnostic deep algorithm for intelligent change management automation, AlgoSec enables acceleration of digital transformation projects, helps prevent business application downtime and substantially reduces manual work and exposure to security risks. AlgoSec’s policy management and CNAPP platforms provide a single source for visibility into security and compliance issues within cloud-native applications as well as across the hybrid network environment, to ensure ongoing adherence to internet security standards, industry, and internal regulations. Learn how AlgoSec enables application owners, information security experts, DevSecOps and cloud security teams to deploy business applications up to 10 times faster while maintaining security at https://www.algosec.com . Gartner disclaimer GARTNER is a registered trademark and service mark, and PEER INSIGHTS is a trademark and service mark, of Gartner, Inc. and/or its affiliates in the U.S. and internationally and are used herein with permission. All rights reserved. Gartner Peer Insights content consists of the opinions of individual end users based on their own experiences with the vendors listed on the platform, should not be construed as statements of fact, nor do they represent the views of Gartner or its affiliates. Gartner does not endorse any vendor, product or service depicted in this content nor makes any warranties, expressed or implied, with respect to this content, about its accuracy or completeness, including any warranties of merchantability or fitness for a particular purpose.

Safeguarding the network architecture is the need of the hour. According to a study, the average cost of a data breach is at an all-time... Network Security Policy Management Network segmentation vs. VLAN explained Tsippi Dach 2 min read Tsippi Dach Short bio about author here Lorem ipsum dolor sit amet consectetur. Vitae donec tincidunt elementum quam laoreet duis sit enim. Duis mattis velit sit leo diam. Tags Share this article 8/9/23 Published Safeguarding the network architecture is the need of the hour. According to a study, the average cost of a data breach is at an all-time high of $4.35 million. And this figure will only increase with governments and regulators becoming ever stricter on data breaches. The go-to method IT administrators adopt to safeguard their networks is network segmentation. By segmenting a larger network into smaller chunks, it becomes much more manageable to secure the entire network. But network segmentation is a broad concept and doesn’t refer to a single procedure. In fact, there are several segmentation processes — one of them being VLAN. Instead of simplifying, this adds to the complexity. In this article, we will explain the core difference between network segmentation and VLAN and when you should opt for a particular one over the other. What is network segmentation? Let’s start with the definitions of network segmentation and VLAN. By definition, network segmentation is the practice of compartmentalizing a network according to firewall rules . In other words, it’s about dividing a computer network into subnetworks. The subnetworks, at the IP level, are known as subnets. Each of the subnets then works independently and in isolation. Think of how a nation is split into various states and provinces for better management at the local level. Running an entire nation at the federal level is too much work. In addition to subnetting, there are other segmentation options like firewall segmentation and SDN (Software Defined Network) segmentation. But for this article’s sake, we will focus on subnets since those are the most common. What is VLAN? VLAN or Virtual LAN (Virtual Local Area Network) is also a type of network segmentation approach where the main physical network is divided into multiple smaller virtual networks. The division is done logically or virtually, not requiring buying additional physical resources. The same resource is divided using computer logic. There are several benefits to dividing the parts of the network, either using VLAN segmentation or subnet techniques. Some of them are: Broadcast domain isolation Both subnets and VLAN isolate broadcast domains. This way, broadcasting network traffic is contained in a single segment instead of being exposed to the entire network. This reduces the chance of network congestion during peak hours and unnecessary server overload, thereby maximizing efficiency. Enhanced security The isolation by subnets or VLAN enhances the IT network’s security policies. This is achieved through various factors that are at play. But primarily, the creation of subnetworks makes the flat network more secure. With multiple subnetworks, you can regulate the security parameters. Thus, those subnets containing critical data (like that of healthcare) can have enhanced cybersecurity measures more than others, making them harder to crack. So, from a security perspective, both subnets and VLAN are a must. Better network management With digitization and IT modernization, the IT infrastructure is growing. Concurrently, it’s getting harder to manage them. Microsegmentation is one way of managing the ever-growing infrastructure. By segmenting, you can deploy teams to each segment, thereby strengthening their management and accountability. With the implementation of SDN, you can even configure and automate the management of some of the subnetworks. Flexibility in scalability Many network administrators face network performance and scalability issues expanding resources. The issues are a mix of technical and economical. Network segmentation offers a solution to such issues. By segmenting the entire data center network, you can choose which segments to expand and control the resources granted to each segment. This also makes scalability more economical. While both offer scalability opportunities, VLAN offers superior functionality than subnets. Reduced scope of compliance Compliance is another area that IT execs need to work on. And network segmentation, either via subnets or VLAN, can help in this regard. By having subnets, you don’t have to audit your entire segmented network as required by regulators. Just audit the necessary subnets and submit the reports to the regulators for approval. This takes far less time and costs significantly less than auditing the entire network. Differences between network segmentation and VLAN By definition, network segmentation (subnetting) and VLAN sound pretty similar. After all, there’s a division of the main network into subnetworks or smaller networks. But besides the core similarities mentioned above, there are a few critical differences. Let’s dive into the differences between the two. The primary difference between the two subnets are layer 3 divisions, while VLANs are layer 2 divisions. As you may recall, networks are layer 1 (device), layer 2 (data link), layer 3 (IP, routers), and so on, up to layer 7 (application). TCP/IP is the newer framework with four layers only. So, when you divide a network at a data link, you need to adopt VLAN. With VLAN, several networks exist on the same physical network but may not be connected to the same fiber switch. In subnets, the division occurs at IP level. Thus, the independent subnets are assigned their IP addresses and communicate with others over layer 3. Besides this significant difference, there are other dissimilarities you should know. Here’s a table to help you understand: VLAN Subnet 1 Divides the network within the same physical network using logic. Divides the IP network into multiple IP networks 2 VLANs communicate with other devices within the same LAN The communication between the subnets is carried out over layer 3 3 It is configured at the switch side It is configured at IP level 4 VLAN divisions are software-based terminology since they’re divided logically. Subnets can be both hardware- of software-based 5 VLAN provides better network access and tend to be more stable Subnets offer limited control When to adopt a subnet? There are use cases when subnets are more suited, while there are cases when you’re better off with Virtual LANs. As per the definition, you need to adopt a subnet when dividing different networks at IP level. So, if you want to create multiple IP addresses for each partition, implement subnets. The subnets are essentially networks within a network with their own IP addresses. Thus, they divide the broadcast domain and improve speed and efficiency. Subnets are also the go-to segmentation method when you need to make the sub-networks available over layer 3 to the outside world. With appropriate access control lists, anyone with an internet connection would be able to access the subnets But subnetting is also used to prevent access to a particular subnet. For example, you may want to limit access to the company’s software codebase to anyone outside the development department. So, only network devices with approved IP addresses used by the developer network are approved to access the codebase. But there are two downsides to subnets you should know. The first one is increased time complexity. When dealing with a single network, three steps are in place to reach the Process (Source Host, Destination Network, and Process). In subnets, there’s an additional step involved (Source Host, Destination Network, Subnet, Process). This extra step increases time complexity, requiring more time for data transfer and connectivity. It also affects stability. Subnetting also increases the number of IP addresses required since each subnet requires its own IP address. This can become hard to manage over time. When to adopt VLAN? Virtual LANs are internal networks within the same physical network. They interact with one another, not with other devices on the same network or outside the world. Think of VLAN as a private wireless network at home. Your neighbors don’t have access to it, but everyone in your home has. If that sounds like your desired result, you should adopt VLAN. There are three types of VLANs (basic, extended, and tagged). In basic VLAN, you assign IDs to each switch port or PCI . Once assigned, you can’t change them. Extended VLAN has more functionalities like priority-based routing. Lastly, tagged VLAN enables you to create multiple VLANs with IEEE 802.1Q. The main advantages of different VLANs over subnet are speed and stability. Since endpoints do not have to resolve IP addresses every time, they tend to be faster. But there’s a significant disadvantage to VLANs: It’s easier to breach multiple partitions if there’s a malicious injection. Without proper network security controls, it is easier to exploit vulnerabilities using malware and ransomware , putting your entire network at risk. Having ACLs (access control lists) can help in such situations. Furthermore, there are issues arising out of physical store requirements. Connecting two segments in VLAN requires you to use routers and IoT. Routers are physical devices that take up space. The more segments you create, the more routers you need to use. Over time, management can become an issue. The bottom line Both subnets and VLANs are network segmentation approaches that improve security and workload management. It’s not a given that you can’t have both. Some companies benefit from the implementation of VLAN and subnets simultaneously. But there are specific times when IT service providers prefer one over the other. Consider your requirements to select the approach that’s right for you. Schedule a demo Related Articles Q1 at AlgoSec: What innovations and milestones defined our start to 2026? AlgoSec Reviews Mar 19, 2023 · 2 min read 2025 in review: What innovations and milestones defined AlgoSec’s transformative year in 2025? AlgoSec Reviews Mar 19, 2023 · 2 min read Navigating Compliance in the Cloud AlgoSec Cloud Mar 19, 2023 · 2 min read Speak to one of our experts Speak to one of our experts Work email* First name* Last name* Company* country* Select country... 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AlgoSec & Check Point AlgoSec seamlessly integrates with Check Points NGFWs to automate application and user aware security policy management and ensure that Check Points’ devices are properly configured. AlgoSec supports the entire security policy management lifecycle — from application connectivity discovery, through ongoing management and compliance, to rule recertification and secure decommissioning. Solution brief Cloudguard datasheet How to Check Point Regulatory compliance Learn how to prepare your Check Point devices for a regulatory audit Check Point Risk Assessment Learn how assess risk on your Check Point devices with AlgoSec Mapping your Network Visualize your complex network, including your Check Point devices, with a dynamic network topology map See how Check Point Users Can Benefit from AlgoSec Schedule time with one of our experts

Empower your cloud security posture with AlgoSec s Prevasio CSPM Achieve compliance and peace of mind Dive deeper now Cloud security posture management (CSPM) Real-time monitoring for comprehensive cloud security Schedule a demo Watch a video Watch a video Remove blind spots and take control of your multi-cloud Uncover all services and resources within your multi-cloud environment. Supporting Amazon AWS , Microsoft Azure and Google GCP, Prevasio scans a comprehensive range of asset classes such as Lambda functions, S3 buckets, Azure VMs and 60 other cloud service assets. Prioritize risks and misconfigurations to focus on what's critical Thousands of alerts are generated by over 600 CSPM alert types at the asset, service and aggregated levels. Build a prioritized risk list according to CIS Benchmarks to make sense of the deluge of alerts and misconfigurations. Confidently meet compliance requirements With Prevasio , compliance posture is constantly being assessed through continuous monitoring of cloud assets. Organizations can prioritize data security and adhere to regulatory frameworks such as PCI-DSS and HIPAA . Close the loop on your risk mitigation through Jira integration Turn Prevasio CSPM alerts into Jira tasks to ensure a streamlined approach to risk mitigation. Empower collaborative efforts between teams to address and resolve security posture issues. Get the latest insights from the experts What is a Cloud Security Assessment? Read blog Shaping tomorrow: Leading the way in cloud security Read blog CSPM importance for CISOs. What security issues can be prevented\defended with CSPM? Read blog Schedule time and secure your cloud Schedule time and secure your cloud Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Schedule a call

AlgoSec’s latest product release provides application-based risk analysis and enhanced support for cloud platforms Extend application connectivity visibility into the multicloud with AlgoSec A32.20 AlgoSec’s latest product release provides application-based risk analysis and enhanced support for cloud platforms May 3, 2022 Speak to one of our experts RIDGEFIELD PARK, N.J., May 3, 2022 – AlgoSec , the application connectivity and security policy company, announced today the release of its latest product version A32.20. AlgoSec’s A32.20 provides a powerful solution for organizations to manage security in their hybrid and multi-cloud estate. With A32.20, organizations obtain granular application visibility and discovery, allowing them to identify and analyze risk in their multicloud environment, including AWS, GCP and Azure. The key benefits that AlgoSec A32.20 delivers to IT, network and security experts include: Application-based risk analysis in the Cloud Enables SecOps teams to shift focus of risk analysis and remediation efforts to specific business applications beyond risk categories. PAN Prisma access support As an early availability, A32.20 supports Prisma Access visibility for remote networks and service connections, a true industry leading technology of this kind. GCP risk support A32.20 provides advanced capabilities to support discovery of GCP related risks across the hybrid network estate and multiple public clouds Extended support of NSX in AWS As an early availability, A32.20 offers extended cloud support for NSX running on AWS in addition to the existing on-premise support. “With this release, A32.20 offers new powerful cloud coverage, including PAN Prisma access. This gives customers the ability to deploy apps in the cloud and on-premise faster than ever before”, said Eran Shiff, Vice President of Product at AlgoSec. “A32.20 provides a comprehensive solution for organizations to secure application connectivity, reduce risk and ensure continuous compliance while undergoing digital transformation.” About AlgoSec AlgoSec, a global cybersecurity leader, empowers organizations to secure application connectivity by automating connectivity flows and security policy, anywhere. The AlgoSec platform enables the world’s most complex organizations to gain visibility, reduce risk and process changes at zero-touch across the hybrid network. AlgoSec’s patented application-centric view of the hybrid network enables business owners, application owners, and information security professionals to talk the same language, so organizations can deliver business applications faster while achieving a heightened security posture. Over 1,800 of the world’s leading organizations trust AlgoSec to help secure their most critical workloads across public cloud, private cloud, containers, and on-premises networks, while taking advantage of almost two decades of leadership in Network Security Policy Management. See what securely accelerating your digital transformation, move-to-cloud, infrastructure modernization, or micro-segmentation initiatives looks like at www.algosec.com

Annual vendor-agnostic research found businesses continue to prioritize multi-cloud environments, with Cisco, Microsoft Azure, AWS, Palo Alto Networks and Fortinet leading the way AlgoSec’s 2025 State of Network Security Report Reveals Growing Adoption of Zero-Trust Architecture and Multi-Cloud Environments Annual vendor-agnostic research found businesses continue to prioritize multi-cloud environments, with Cisco, Microsoft Azure, AWS, Palo Alto Networks and Fortinet leading the way April 3, 2025 Speak to one of our experts RIDGEFIELD PARK, NJ, April 3, 2025 – Global cybersecurity leader AlgoSec has released its annual ‘The State of Network Security Report’, providing a comprehensive and objective, vendor-agnostic analysis of today’s network security landscape by identifying key market trends, highlighting in demand solutions and technologies and the most popular strategies being adopted by security professionals. The report identifies significant shifts in cloud platform adoption, deployment of firewalls and Software- Defined Wide Area Networks (SD-WAN), as well as Secure Access Service Edge (SASE) implementation and AI. Based on comparative findings from 2024 and 2025, AlgoSec’s research includes responses from security, network and cloud professionals across 28 countries and evaluates market leaders including Cisco, Microsoft Azure, AWS, Check Point, Palo Alto Networks and more. Key findings from the report include: Security visibility gaps are driving a shift in security management - 71% of security teams struggle with visibility, which is delaying threat detection and response. The lack of insight into application connectivity, security policies and dependencies are proving to be a significant risk Multi-cloud and cloud firewalls are now standard – Businesses continue to adopt multi-cloud environments, with Azure becoming the most widely used platform in 2025. Firewall and SD-WAN adoption grow despite complexity – Multi-vendor strategies make firewall deployment more challenging. In terms of customer base, Palo Alto Networks took the lead, but Fortinet’s NGFW is gaining traction. SD-WAN adoption jumped, with Fortinet rising from 19.1% in 2024 to 25.8% in 2025. Zero-trust and SASE gain momentum – Zero-trust awareness is at an all-time high, with 56% of businesses fully or partially implementing it, though 20% are still in the learning phase. SASE adoption is also growing, with Zscaler leading at 35%, while Netskope has gained 15% market share. AI and automation are reshaping security – AI-driven security tools are improving real-time threat detection, but implementation and privacy concerns remain a challenge. Automation is now critical, with application connectivity automation ranked as the top priority for minimizing risk and downtime. “As businesses expand their digital footprints across hybrid and multi-cloud environments, securing network infrastructure has become a top challenge,” said Eran Shiff, VP of Product at AlgoSec. “We are seeing a major shift toward automation, orchestration and risk mitigation as key security priorities. Adoption of SD-WAN and SASE continues to rise, while awareness of AI-driven security and zero-trust principles is stronger than ever.” The full report can be accessed here. About AlgoSec AlgoSec, a global cybersecurity leader, empowers organizations to securely accelerate application delivery up to 10 times faster by automating application connectivity and security policy across the hybrid network environment. With two decades of expertise securing hybrid networks, over 2200 of the worlds most complex organizations trust AlgoSec to help secure their most critical workloads. AlgoSec Horizon platform utilizes advanced AI capabilities, enabling users to automatically discover and identify their business applications across multi-clouds, and remediate risks more effectively. It serves as a single source for visibility into security and compliance issues across the hybrid network environment, to ensure ongoing adherence to internet security standards, industry, and internal regulations. Additionally, organizations can leverage intelligent change automation to streamline security change processes, thus improving security and agility. Learn how AlgoSec enables application owners, information security experts, SecOps and cloud security teams to deploy business applications faster while maintaining security at www.algosec.com .