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Get your application discovery and dependency mapping questions answered. Find clear explanations, best practices, and learn how to improve your understanding of your IT landscape. Application Discovery & Dependency Mapping Explained (FAQs) Introduction A network is the sum of its components, and if you want to ensure its functioning at the highest level, you need to be able to pinpoint every app that exists inside it. However, when the average company has 254 SaaS apps, identifying all the apps and dependencies that exist throughout an on-premise or cloud environment is easier said than done. Organizations cannot afford to rely on manual IP scanning to catalog or inventory each app their employees use every day; they need an AI-powered, automated, and scalable application discovery process. In this post we are going to examine what application discovery is, and how an automated dependency mapping tool can help. Schedule a Demo What is application discovery? Application discovery is the process of identifying and creating an inventory of the apps installed and used throughout an environment. This not only includes apps used within on-premise servers, but also those in the cloud, in containers, and even on employees’ personal devices. Discovering applications is essential for IT administrators because it helps to set out a framework they can use to navigate the network and understand how different elements fit together. It also enables security teams to manage the performance and security of the business apps used by the organization. Schedule a Demo What is a dependency mapping tool? A dependency mapping tool is essentially a tool that automatically maps apps and dependencies. A typical dependency mapping tool automates the discovery of applications within a network and provides a visual map to which an IT administrator can refer. Dependency mapping tools are a popular choice among IT teams because manually identifying and inventorying apps is a time-consuming process. Schedule a Demo Key benefits of application dependency mapping Taking the time to map application dependencies, or investing in a tool that automates the process, pays dividends because it provides administrators with a heightened understanding of their organization’s IT environment. Greater visibility over how apps connect to each other reduces the amount of time it takes to conduct troubleshooting and root cause analysis, which means that disruptions can be resolved faster, limiting the overall operational impact of downtime. Dependency mapping also enhances change management, giving administrators the ability to identify the impact that changing the topology or composition of the network will have on critical services. At the same time, better knowledge of the IT environment makes it easier to spot inefficiencies and redundancies, giving insights into more cost-effective ways of structuring the network and decreasing resource consumption. As an added bonus, having a complete understanding of application topology decreases the risk of vulnerabilities in the network, and reduces the likelihood of data leakage and intrusions from unauthorized third parties. Organizations interested in mapping application dependencies at scale would be well-advised to incorporate an application dependency mapping tool so they do not have to manually poll apps from scratch. Schedule a Demo Application discovery in cloud environments AlgoSec AlgoSec is the industry-leading AI-powered application and connectivity management solution for mapping apps, security policies, and connectivity flows across on-premise, hybrid, and multi-cloud environments. As a solution, it is designed to enable network security operations teams to map and understand app and connectivity flows through their organization. This top-down, topological perspective allows users to identify business risks and remediate them ASAP. For example, an administrator can use the platform to identify obsolete traffic that could serve as a potential entry point for malicious traffic. At a high level, application discovery not only helps administrators keep up with topology changes in the network and reduce the risk of downtime, it also provides the visibility needed to simplify the management of firewall and SSL configurations. Features Discovery of applications and connectivity flows Real-time map of app connectivity requirements Impact assessment of topology changes on application connectivity , security and compliance Complete easy-to-use workflows for streamlining migration to a new data center or cloud environment Zero-touch change management and access rule recertification Use cases Create a real-time map of applications and connectivity flows to outline network topology. Use workflows to support users who migrate apps as part of the data center migration process. Before migration, assess and predict the impact of topology changes on application connectivity, performance and security. Automatically configure application security policies post-migration. Amazon Web Services (AWS) and the AWS application discovery service AWS application discovery service is a common choice for migrating apps to an AWS environment. The AWS discovery service can automatically discover on-premise applications, and integrates with AWS Migration Hub to help migrate multiple applications at the same time. While this approach is useful for identifying applications in on-premise environments, unlike AlgoSec, it does not offer deep visibility into connectivity flows. It also offers limited support for cloud migration, lacking automated change management capabilities and migration workflows. Features The AWS application discovery service is designed to enable organizations to identify applications across AWS-powered cloud environments. The service includes the following features: Encrypt data in transit and at rest Create a snapshot of your on-premise application inventory Integrate discovery data with other AWS services, such as AWS Migration Hub and SMS Plan migrations for servers that share applications Connect applications to servers Group servers to migrate Mix agentless and agent-based approaches Use cases The main use case for AWS Application Discovery is discovering and creating an inventory of on-premise Information you can gather includes hostnames, IP addresses, MAC addresses and more. Map connections between applications and servers to create a visual representation of your network environment. Ingest utilization data to plan for your migration to the AWS Migration Hub. Microsoft Azure Migrate: Discovery and assessment tool One of the next biggest alternatives to the AWS application discovery service is the Microsoft Azure Migrate: Discovery and assessment tool. This solution enables users to automatically create an inventory of on-premise databases software, web apps, and SQL or AWS server instances. The Microsoft Azure Migrate: Discovery and assessment tool also integrates with Azure Monitor ’s Application Insight, an application monitoring solution. Oracle Cloud Infrastructure Oracle Cloud also offers its own migration tool designed to migrate on-premise applications and virtual machines from on-premise environments to Oracle Cloud Infrastructure using automated migration and provisioning. Oracle Cloud’s migration tool also offers templates, workflow automation and connectors for popular workloads including SQL Server, MySQL, Java, etc. Like Azure, Oracle Cloud also offers Application performance Monitoring integration. Schedule a Demo Other cloud providers and SaaS solutions Besides the top three cloud vendors, there are a number of other cloud security and SaaS-vendors offering application discovery capabilities. Some of these are listed below: Datadog Feature summary: Automated application and dependency mapping in real-time, alerts, latency graphs, and performance anomaly detection. Pros and cons: Rapid app and dependency mapping but beyond that lacks functionality for supporting cloud migrations. ManageEngine applications manager Feature summary: Application Discovery and Dependency Mapping (ADDM) with IP range application discovery, scheduled discoveries, scan summary reports, and a dependency map view. Pros and cons: IP range based discovery offers a broad view of apps and dependencies but does not offer migration workflows and change management capabilities. SolarWinds server & application monitor Feature summary: Polling to create application and dependency maps, tracking the response time of services, creating custom alerts for network latency, packet loss, and uptime monitoring. Pros and cons: Designed for monitoring application performance in on-premise environments, but it too lacks migration support. Schedule a Demo Application discovery in on-premises environments One of the main challenges that organizations face when trying to discover applications in on-premise environments is reliance on outdated legacy monitoring tools. Manually discovering and mapping applications is inefficient, and offers limited visibility over configuration data and metrics across the environment. Application discovery tools such as AlgoSec’s tools enable security teams to discover application dependencies and connections throughout the environment that could easily be overlooked by relying on manual approaches alone. Automation also opens the door for an organization to leverage virtualization technologies from providers like VMware and Hyper-V, which unlock new cloud-native capabilities that cannot necessarily be replicated on-premises. Schedule a Demo FAQs How does AlgoSec help with application discovery and asset management? AlgoSec can help you to discover, identify, and map applications across your on-premise and cloud environments in real-time using AI, so you can keep an up-to-date perspective of your entire network. How does AlgoSec help optimize traffic flows and improve firewall performance? Deploying AlgoSec enables an organization to scan traffic flows and match them to applications within the environment. Once you discovered traffic flows, you can start to automatically optimize application flows and the maximum number of flows per application in order to optimize your firewall throughput and performance for end users. How does AlgoSec help enforce security and compliance across the data center? Increased transparency of application, traffic and firewall flows makes it easier for IT security teams to assess the effectiveness of security policies in the environment, and creates an audit trail that can be used to manage potential compliance violations. Enhanced visibility makes it easier to maintain compliance and to ensure that security controls are effective at protecting your critical data assets from compromise or misuse. For example, administrators can automatically identify compliance gaps and generate compliance reports to document the state of firewalls and surrounding infrastructure to comply with PCI, HIPAA, SOX, and NERC. How does AlgoSec help with business continuity and disaster recovery? AlgoSec helps your organization to maintain business continuity not only through proactive network security policy management, but also by simplifying the process of migrating application connectivity flows and firewall policies to the cloud and ensuring compliance. Migrating your apps and data to a secondary site ensures that if your primary site is affected by a power outage or natural disaster, you will still be able to access critical information. Furthermore, according to an EMA survey, network security policy management also enhances business continuity by helping organizations to enforce more consistent security policies, conduct more proactive disaster recovery testing, and limit the number of change-related outages. How does AlgoSec help with data center migration? AlgoSec can help you to migrate your data center by discovering and mapping applications and connectivity flows, and connecting them to the relevant policies. Once these are discovered, the solution can migrate them to a new on-premise installation or cloud platform, while automatically identifying and removing obsolete and redundant firewall rules. This reduces the amount of overall manual processes associated with the migration. How does AlgoSec help with cloud cost optimization? AlgoSec’s application discovery and mapping capabilities help your organization to optimize costs in the cloud by giving you a reference point to conduct application performance monitoring and ensure that your cloud bandwidth is used efficiently. This ensures that you are getting the maximum throughput from your network infrastructure and are not being held back by outages or other application performance issues. What are ADDM solutions and their advantages? Application Discovery and Dependency Mapping (ADDM) is a category of software solutions that can map applications and dependencies to help human users understand how they connect together and interact. ADDM solutions are a popular choice for IT administrators because they enable users to identify and map dependencies automatically rather than spending a substantial amount of time locating them manually. How does application performance monitoring work? Application performance monitoring is where an organization monitors performance metrics from applications located throughout their environment. Monitoring application performance helps to generate insights into how to optimize system availability, performance and response time. It also helps to ensure that end users enjoy a solid user experience with minimal downtime. What are some common application discovery methods? There are a number of common application discovery methods that organizations can deploy. These include: Sweep and poll – A technique for discovering IT assets whereby a system pings IP addresses and identifies the devices that issue a response. Network monitoring – Monitoring real-time packet information to generate data on application dependencies. This can be done at the packet level by capturing packets or at the flow level with NetFlow. Agent on Server – A process for identifying applications that uses a software agent deployed to a server to conduct real-time monitoring of incoming and outgoing traffic in order to map dependencies. Orchestration-Level Discovery – Where an organization uses an orchestration platform like AlgoSec to discover applications and dependencies automatically without having to deploy agents to servers. What is the role of DevOps in application discovery? Application discovery plays an important role in the DevOps process because it enables development teams to work toward automated app deployment. Automating the discovery of apps and connectivity flows means that users do not need coding knowledge to understand the environment. Increased visibility also supports a DevSecOps strategy, offering security teams greater transparency over application components. For example, a security analyst can view apps and connected dependencies and get a clear perspective of the entire attack surface and potential vulnerabilities a hacker could exploit. What is the role of application discovery in cloud migration? Discovering applications and dependencies helps you to fast-track your cloud migration by identifying what components you need to move and allowing you to phase the deployment in steps. Schedule a Demo Take control of your network Gaining visibility over applications in your environment is a critical step on your journey toward enhancing your business agility and continuity and minimizing downtime. A better understanding of app topology helps administrators find risks and remediate them quickly to ensure ongoing compliance. If you cannot see how effectively your applications are being delivered, or how they perform, then there is no way to consistently optimize performance or enforce security policies. While manually developing an inventory of apps and dependencies is a time-consuming process, the AlgoSec platform can completely eliminate the need for this by discovering apps in real-time so you can see how these components connect to each other on-premise, and across the private or public cloud. Real-time visibility over apps gives you everything you need to manage performance, risk, and compliance challenges at enterprise pace. Schedule a Demo Select a size Introduction What is application discovery? What is a dependency mapping tool? Key benefits of application dependency mapping Application discovery in cloud environments Other cloud providers and SaaS solutions Application discovery in on-premises environments FAQs Take control of your network Get the latest insights from the experts Use these six best practices to simplify compliance and risk mitigation with the AlgoSec platform White paper Learn how AlgoSec can help you pass PCI-DSS Audits and ensure Solution overview Learn how AlgoSec can help you pass PCI-DSS Audits and ensure Solution overview Choose a better way to manage your network

Ensure your network security is up to par with a comprehensive firewall audit checklist. Review and optimize security policy rules to prevent vulnerabilities. Firewall audit checklist for security policy rules review ---- ------- Schedule a Demo Select a size ----- Get the latest insights from the experts Choose a better way to manage your network

Explore Algosec's customer success stories to see how organizations worldwide improve security, compliance, and efficiency with our solutions. BM&FBOVESPA Invests In Security Policy Management To Improve Operational Efficiencies Organization BM&FBOVESPA Industry Financial Services Headquarters Sao Paulo, Brazil Download case study Share Customer
success stories "AlgoSec helps us maintain a problem-free environment. And because of operational efficiencies, the product paid for itself within the first year. With AlgoSec, we can do more with less" Leading Latin American Stock Exchange Maintains a Secure, Compliant Trading Environment AlgoSec Business Impact • Recouped investment in AlgoSec within the first year• Reduce rule review project from 1 month to 1 day• Helps maintain a secure, compliant environment• Frees up staff to focus on other crucial security tasks Background Headquartered in Sao Paulo, Brazil, BM&FBOVESPA is the largest stock exchange in Latin America. BM&FBOVESPA has a diversified and integrated trading model offering a complete custody system. Trading takes place in an exclusively electronic environment. The Exchange enables customers to trade equities, to hedge and to execute arbitrage, investment diversification, allocation and the leveraging of positions. Challenge To keep its systems and transactions secure, BM&FBOVESPA utilizes firewalls from several vendors. In total these firewalls have about 40,000 firewall rules, with another 5,000 added annually. Even with two full-time employeesfocused on maintaining firewall rules, the steady addition of rules and objects created clutter and consumed the firewall appliances’ CPU and memory. Therefore, BM&FBOVESPA realized that an automated solution for firewall policy management was the natural next step in the maturity of its information security processes. “Manually managing our firewall policies was difficultand time consuming. We needed a solution that supported a variety of different firewall vendors and could integrate and manage all policies in an automated manner,” said Wellington Vita, Information Security Manager of BM&FBOVESPA. Solution Following a recommendation from Compugraf, one of BM&FBOVESPA’s key security partners, Vita and his team evaluated AlgoSec’s Security Management solution. The proof of concept clearly showed the value of the solution and the ease and speed with which it could be deployed. The ability to integrate and manage devices from multiple vendors and provide visibility across the entire network was also important in BM&FBOVESPA’s decision to select AlgoSec. Results BM&FBOVESPA uses AlgoSec on a daily basis to manage its firewall policies. “AlgoSec is a great product which helps us maintain the core of our environment -the firewall policy. With AlgoSec we can easily identify unused rules and objects, as well as rules that were not compliant with our information security policy.” noted Vita. “While using AlgoSec, we also discovered a new benefit. AlgoSec enables our information security architects to understand how information flows between firewalls, which helps them significantly with their information security projects.” The gains in efficiency and productivity have dramatically reduced the time consumed by firewall policy management. “Because of operational efficiencies AlgoSec paid for itself in the first year,” said Vita. In addition to cutting the time needed to perform ongoing policy management, the solution enabled BM&FBOVESPA to meet deadlines that would previously have been unachievable. “A month ago, we had to review our incoming internet access rules in two days — and did. Without AlgoSec, it would have taken us at least a month to accomplish this task,” added Vita.“AlgoSec helps us maintain a problem-free environment. And we have been able to move members of our team who previously handled these maintenance jobs onto other tasks, so we can do more with less. I recommend AlgoSec to other companies — it will help them improve their firewall policy management processes,” concluded Vita. Schedule time with one of our experts

Explore Algosec's customer success stories to see how organizations worldwide improve security, compliance, and efficiency with our solutions. Atruvia (formerly Fiducia IT AG) Reduces Security Risks For Banks With Algosec Organization Atruvia Industry Technology Headquarters Karlsruhe, Deutschland Download case study Share Customer
success stories "AlgoSec’s Security Management Solution is incredibly powerful. Its intelligent process improvements have directly translated into the highest level of security and compliance for our customers’ networks" Background With over 45 years’ experience in the banking sector, Atruvia ( formerly Fiducia IT AG) is one of the top ten IT providers in Germany. Today, Atruvia manages the IT networks of nearly 1,100 banks, constituting more than 100,000 PC workstations, 6,600 servers and 25,000 self-service banking terminals. Responsible for ensuring the smooth and secure processing of more than 16 billion transactions per year for its customers, Atruvia’s risk mitigation and regulatory compliance strategies are of utmost importance. Challenge To protect its customer networks, Atruvia implemented a number of security solutions, including 60 Check Point and 20 Juniper firewall clusters. However, managing multiple firewalls in a multi-vendor environment proved challenging. “Performing vulnerability assessments for such a large and complex firewall environment was extremely time-consuming, labor-intensive and prone to human error,” says Lutz Bleyer, Atruvia’s Chief Information Security Officer. With multiple stakeholders at each of its client organizations, Atruvia required a structured change management process to prevent firewall policies from growing unmanageable and creating security risks. “We needed a proven firewall management and workflow solution to eliminate potential security risks while providing us with complete visibility into our customer networks, anytime, anywhere,” says Bleyer. Solution After an in-depth analysis, Atruvia chose the AlgoSec Security Management Solution to optimize its security, compliance and change management processes. “AlgoSec provided the most comprehensive, intelligent automation solution for our firewall operations, helping us increase efficiency while improving risk mitigation and compliance,” says Bleyer. Results AlgoSec’s topology-aware technology provides Atruvia with complete visibility into the security landscape of its customers’ networks. “AlgoSec’s in-depth visibility enables us to easily create a hierarchy profile and establish a competency baseline of operations for each networks’ firewalls, even when multiple vendor technologies are involved,” says Bleyer. Atruvia’s security consultants and auditors are now closely aligned with their customers’ IT teams, regardless of their location. “The level of visibility AlgoSec provides across our customers’ security networks, and the ability to perform coordinated tasks remotely with them, enables us to work hand-in-hand as a joint team,” says Bleyer. Atruvia also uses AlgoSec to automate policy change management across customers’ firewall environments, enabling the company to eliminate manual and inefficient processes associated with the security policy change lifecycle, save time and reduce the potential for human error. “AlgoSec has fundamentally changed how we manage sophisticated, multi-device, multi-vendor firewall environments. By automating our workflows, we’ve eliminated unnecessary policy changes and reduced the time required to process changes by half,” explains Bleyer. “Thanks to AlgoSec’s intelligent automation, we’ve gained valuable optimization capabilities enabling our teams to operate smarter and faster.” Another important AlgoSec feature is its automatic assessment and reporting capabilities, which help Atruvia ensure that it remains in continuous compliance with corporate governance rules and adheres to regulatory standards, including ISO 27001, ISO 27002 and Sarbanes-Oxley (SOX). Data and network security, particularly within the financial sector, requires incredible focus on risk management and mitigation. “With AlgoSec we can now analyze every change and its impact on the network before it is live, and focus on risk mitigation rather than crisis management.” In summary, Bleyer commented, “Not only does AlgoSec more than measure up from a technology perspective, but the integrity of the company and its employees has surpassed our expectations and raised the bar for what we look for in other partners.” Schedule time with one of our experts

New version of Security Management Solution supports central control of access credentials, extends DevOps integrations, and optimizes security management processes AlgoSec Announces Support for Privileged Access Management to Enhance Security Management and Reduce Network Attack Surface New version of Security Management Solution supports central control of access credentials, extends DevOps integrations, and optimizes security management processes February 19, 2019 Speak to one of our experts 19 February 2019 – AlgoSec , the leading provider of business-driven network security management solutions, has introduced the AlgoSec Security Management Solution version 2018.2. The new version features support for privileged access management solutions, enabling customers to further enhance their organization’s security management processes with centralized control of device credentials and privileged accounts. AlgoSec 2018.2 delivers seamless access to security devices protected by privileged access control solutions, with no need to duplicate or save those devices’ account access credentials externally. It also includes extended support for DevOps and enhanced support functions for a range of market-leading security controls, to accelerate automation of network security management while minimizing the organization’s attack surface. “With support for privileged access control solutions, customers can now take a business-centric approach to security policy management that ensures agility and continuity, while maintaining a strong security and compliance posture across all of their strategic assets and privileged accounts,” said Omer Ganot, Product Manager at AlgoSec. “The range of new features and enhancements in version 2018.2 further extends AlgoSec’s business-driven security management capabilities, which optimize agility, security and compliance across today’s hybrid enterprise networks.” Key new features introduced in AlgoSec version 2018.2 include: Support for CyberArk Privileged Access Security Solution AlgoSec version 2018.2 gives access to security devices protected by CyberArk’s solution without duplicating or saving those devices’ access credentials, helping joint customers maintain centralized control of all privileged accounts and credentials. Enhanced support for Cisco, VMware, F5, Fortinet and Juniper devices Extended change management for Cisco Firepower devices controlled by the Firepower Management Center, giving full automation and end-to-end provisioning Extended change management support for VMWare NSX Distributed Firewalls, enabling rules to be automatically added, modified, disabled or removed from policies Seamless integration with Cisco Tetration , enabling automation of micro-segmentation projects; also reduces attack surface by combining endpoint and network security Extended support for F5’s BIG-IP Advanced Firewall Manager module Enhanced integration with FortiManager security policies, enabling fully automated management of related Fortinet firewalls managed by FortiManager Enhanced workflow automation for Juniper SRX firewalls New integrations with External Application Deployment Systems for DevOps DevOps can deploy new applications and manage their connectivity with new APIs for application, flow and object editing, and for user / role permission management. APIs are available for Ansible, Puppet and Chef Optimized user experience 2018.2 features a new, dedicated UI for troubleshooting results of traffic simulation queries, helping users to fine-tune their network maps and achieve automation faster The AlgoSec Security Management Solution version 2018.2 is generally available. About AlgoSec The leading provider of business-driven network security management solutions, AlgoSec helps the world’s largest organizations align security with their mission-critical business processes. With AlgoSec, users can discover, map and migrate business application connectivity, proactively analyze risk from the business perspective, tie cyber-attacks to business processes and intelligently automate network security changes with zero touch – across their cloud, SDN and on-premise networks. Over 1,800 enterprises , including 20 of the Fortune 50, utilize AlgoSec’s solutions to make their organizations more agile, more secure and more compliant – all the time. Since 2005, AlgoSec has shown its commitment to customer satisfaction with the industry’s only money-back guarantee. All product and company names herein may be trademarks of their registered owners. *** Media Contacts: Tsippi Dach AlgoSec [email protected] Craig Coward Context Public Relations [email protected] +44 (0)1625 511 966

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 Navigating Compliance in the Cloud AlgoSec Cloud Mar 19, 2023 · 2 min read 5 Multi-Cloud Environments Cloud Security Mar 19, 2023 · 2 min read Convergence didn’t fail, compliance did. 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... Short answer* By submitting this form, I accept AlgoSec's privacy policy Schedule a call

Security Policy Management with Professor Wool Managing Business Application Connectivity Managing Business Application Connectivity is a whiteboard-style series of lessons that examine the challenges of and provide technical tips for provisioning and decommissioning application connectivity across enterprise networks and data centers. Lesson 1 In this lesson, Professor Wool examines the challenges of managing data center applications and their connectivity requirements. Professor Wool also offers tips for bridging the gap between application owners and network and security teams - to ensure faster, more secure deployment, maintenance and decommissioning of critical applications. Examining the Need for Application-Centric Security Policy Management Watch Lesson 2 In this lesson, Professor Wool discusses how to look at and prioritize network security vulnerabilities in a new way - from the perspective of the business applications in your data center. How to Prioritize Risk from the Business Perspective Watch Lesson 3 In this lesson, Professor Wool examines how to leverage firewall rules for discovering the connectivity requirements of data center applications. Tips to Discover Business Application Connectivity Requirements Watch Lesson 4 In this lesson, Professor Wool examines the challenges of decommissioning business applications and offers recommendations for improving security without impacting network operations by removing firewall rules that are no longer in use. Tips for Secure Decommissioning of Business Applications Watch Lesson 5 How to Automatically Identify Business Application Connectivity Needs from Network Traffic Watch Lesson 6 The Different Data Sources for Application Connectivity Discovery Watch Lesson 7 How to Aggregate Network Flows Into Application Flows Watch Lesson 8 The Benefits of Mapping Firewall Rules to Business Applications 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

AlgoSec ObjectFlow Optimizing policy automation through effective object management Download PDF Schedule time with one of our experts 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