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Problems with firewalls can be quite disastrous to your operations. When firewall rules are not set properly, you might deny all... Firewall Change Management Firewall troubleshooting steps & solutions to common issues 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 8/10/23 Published Problems with firewalls can be quite disastrous to your operations. When firewall rules are not set properly, you might deny all requests, even valid ones, or allow access to unauthorized sources. There needs to be a systematic way to troubleshoot your firewall issues, and you need to have a proper plan. You should consider security standards, hardware/software compatibility, security policy planning , and access level specifications. It is recommended to have an ACL (access control list) to determine who has access to what. Let us give you a brief overview of firewall troubleshooting best practices and steps to follow. Common firewall problems With the many benefits that firewalls bring, they might also pop out some errors and issues now and then. You need to be aware of the common issues, failures, and error codes to properly assess an error condition to ensure the smooth working of your firewalls. Misconfiguration errors A report by Gartner Research says that misconfiguration causes about 95% of all firewall breaches. A simple logical flaw in a firewall rule can open up vulnerabilities, leading to serious security breaches. Before playing with your firewall settings, you must set up proper access control settings and understand the security policy specifications. You must remember that misconfiguration errors in CLI can lead to hefty fines for non-compliance, data breaches , and unnecessary downtimes. All these can cause heavy monetary damages; hence, you should take extra care to configure your firewall rules and settings properly. Here are some common firewall misconfigurations: Allowing ICMP and making the firewall available for ping requests Providing unnecessary services on the firewall Allowing unused TCP/UDP ports The firewall is set to return a ‘deny’ response instead of a ‘drop’ for blocked ports. IP address misconfigurations that can allow TCP pinging of internal hosts from external devices. Trusting DNS and IP addresses that are not properly checked and source verified. Check out AlgoSec’s firewall configuration guide for best practices. Hardware issues Hardware bottlenecks and device misconfigurations can easily lead to firewall failures. Sometimes, running a firewall 24/7 can overload your hardware and lead to a lowered network performance of your entire system. You should look into the performance issues and optimize firewall functionalities or upgrade your hardware accordingly. Software vulnerabilities Any known vulnerability with your firewall software must be dealt with immediately. Hackers can exploit software vulnerabilities easily to gain backdoor entry into your network. So, stay current with all the patches and updates your software vendors provide. Types of firewall issues Most firewall issues can be classified as either connectivity or performance issues. Here are some tools you can use in each of these cases: Connectivity Issues Some loss of access to a network resource or unavailability usually characterizes these issues. You can use network connectivity tools like NetStat to monitor and analyze the inbound TCP/UDP packets. Both these tools have a wide range of sub-commands and tools that help you trace IP network traffic and control the traffic as per your requirements. Firewall Performance Issues As discussed earlier, performance issues can cause a wide range of issues, such as unplanned downtimes and firewall failures, leading to security breaches and slow network performance. Some of the ways you can rectify it include: Load balancing by regulating the outbound network traffic by limiting the internal server errors and streamlining the network traffic. Filtering the incoming network traffic with the help of Standard Access Control List filters. Simplifying firewall rules to reduce the load on the firewall applications. You can remove unused rules and break down complex rules to improve performance. Firewall troubleshooting checklist steps Step 1. Audit your hardware & software Create a firewall troubleshooting checklist to check your firewall rules, software vulnerabilities, hardware settings, and more based on your operating system. This should include all the items you should cover as part of your security policy and network assessment. With Algosec’s policy management , you can ensure that your security policy is complete, comprehensive and does not miss out on anything important. Step 2. Pinpoint the Issue Check what the exact issue is. Generally, a firewall issue can arise from any of the three conditions: Access from external networks/devices to protected resources is not functioning properly Access from the protected network/resources to unprotected resources is not functioning properly. Access to the firewall is not functioning properly. Step 3. Determine the traffic flow Once you have ascertained the exact access issue, you should check whether the issue is raised when traffic is going to the firewall or through the firewall. Once you have narrowed down this issue, you can test the connectivity accordingly and determine the underlying cause. Check for any recent updates and try to roll back if that can solve the issue. Go through your firewall permissions and logs for any error messages or warnings. Review your firewall rules and configurations and adjust them for proper working. Depending upon your firewall installation, you can make a checklist of items. Here is a simple guide you can follow to conduct routine maintenance troubleshooting . Monitor the network, test it out, and repeat the process until you reach a solution. Firewall troubleshooting best practices Here are some proven firewall troubleshooting tips. For more in-depth information, check out our Network Security FAQs page. Monitor and test Regular auditing and testing of your Microsoft firewall can help you catch vulnerabilities early and ensure good performance throughout the year. You can use expert-assisted penetration testing to get a good idea of the efficacy of your firewalls. Also be sure to check out the auditing services from Algosec , especially for your PCI security compliance . Deal with insider threats While a Mac or Windows firewall can help you block external threats to an extent, it can be powerless regarding insider attacks. Make sure you enforce strong security controls to avoid any such conditions. Your security policies must be crafted well to avoid any room for such conditions, and your access level specifications should also be well-defined. Device connections Make sure to pay attention to the other modes of attack that can happen besides a network access attempt. If an infected device such as a USB, router, hard drive, or laptop is directly connected to your system, your network firewall can do little to prevent the attack. So, you should put the necessary device restrictions in your privacy statement and the firewall rules. Review and Improve Update your firewall rules and security policies with regular audits and tests. Here are some more tips you can follow to improve your firewall security: Optimize your firewall ruleset to allow only necessary access Use unique user IP instead of a root ID to launch the firewall services Make use of a protected remote Syslog server and keep it safe from unauthorized access Analyze your firewall logs regularly to identify and detect any suspicious activity. You can use tools like Algosec Firewall Analyzer and expert help to analyze your firewall as well. Disable FTP connections by default Setup strict controls on how and which users can modify firewall configurations. Include both source and destination IP addresses and the ports in your firewall rules. Document all the updates and changes made to your firewall policies and rules. In the case of physical firewall implementations, restrict the physical access as well. Use NAT (network address translation) to map multiple private addresses to a public IP address before transmitting the information online. How does a firewall actually work? A Windows firewall is a network security mechanism that allows you to restrict incoming network traffic to your systems. It can be implemented as a hardware, software, or cloud-based security solution . It acts as a barrier stopping unauthorized network access requests from reaching your internal network and thus minimizing any attempt at hacking or breach of confidential data . Based on the type of implementation and the systems it is protecting, firewalls can be classified into several different types. Some of the common types of firewalls are: Packet filtering – Based on the filter standards, a small amount of incoming data is analyzed and subjected to restriction on distribution across the network. Proxy service – An application layer service that acts as an intermediary between the actual servers to block out unauthorized access requests. Stateful inspection – A dynamic packet filtering mechanism that filters out the network packets. Next-Generation Firewall (NGFW) – A combination of deep packet inspection and application level inspection to block out unauthorized access into the network. Firewalls are essential to network security at all endpoints, whether personal computers or full-scale enterprise data centers. They allow you to set up strong security controls to prevent a wide range of cyberattacks and help you gain valuable data. Firewalls can help you detect suspicious activities and prevent intrusive attacks at the earliest. They can also help you regulate your incoming and outgoing traffic routing, helping you implement zero-trust security policies and stay compliant with security and data standards. Schedule a demo Related Articles 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 5 Multi-Cloud Environments Cloud Security 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

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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 .

Review top vulnerability management tools for 2025, including suggested applications and selection criteria, and learn how to minimize exposure to security threats. It covers network vulnerability tools, automated vulnerability management systems, open source vulnerability scanners, continuous monitoring solutions, and patch management and vulnerability scanning tools. The number of cyberattacks keeps increasing, and their associated cost shows no sign of slowing down. The global average cost of a data breach now stands at $4.4 million, according to IBM’s Cost of a Data Breach Report 2025. Meanwhile, the Verizon 2025 Data Breach Investigation Report shows ransomware attacks caused 44% of all system-intrusion breaches. These data points underline that organizations must establish robust security measures early on to prevent future problems from occurring. This guide provides essential information about vulnerability management today through its presentation of top vulnerability management tools on the market for 2025. Top vulnerability management tools 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. Vulnerability Management Tools for 2025: What to Use and Why Review top vulnerability management tools for 2025, including suggested applications and selection criteria, and learn how to minimize exposure to security threats. It covers network vulnerability tools, automated vulnerability management systems, open source vulnerability scanners, continuous monitoring solutions, and patch management and vulnerability scanning tools. The number of cyberattacks keeps increasing, and their associated cost shows no sign of slowing down. The global average cost of a data breach now stands at $4.4 million, according to IBM’s Cost of a Data Breach Report 2025 . Meanwhile, the Verizon 2025 Data Breach Investigation Report shows ransomware attacks caused 44% of all system-intrusion breaches. These data points underline that organizations must establish robust security measures early on to prevent future problems from occurring. This guide provides essential information about vulnerability management today through its presentation of top vulnerability management tools on the market for 2025. What Is Vulnerability Management? Vulnerability management is a process of ongoing asset discovery to locate weaknesses, which are then evaluated according to their risk level and business value. This approach enables fast problem-solving and generates clear, easy-to-understand data for stakeholders. Key Features of Modern Vulnerability Management Tools Organizations require a vulnerability management platform that protects their data centers, multiple cloud services, and SaaS platforms through analytical and automated features. To find the right vulnerability management tool for your environment, you need to assess both network vulnerability tools and application-aware engines. What Is Asset Discovery in Vulnerability Management and Why Does It Matter? Asset discovery in vulnerability management requires organizations to identify all hardware and software components within their network infrastructure. This first step is critical, as it allows companies to understand their security vulnerabilities and create appropriate protection plans. There is no safeguarding the invisible. This is why your chosen toolset must automatically detect all endpoints, servers, containers, applications, and internet-accessible assets that exist within both cloud and on-premises environments. A unified inventory system that integrates multiple data sources enables vulnerability scans to detect more assets. This, in turn, minimizes the number of detection and identification issues that occur when assets exist outside of your system. Why Is Continuous Vulnerability Monitoring Essential in 2025? Vulnerability monitoring will continue to be necessary in 2025 and beyond because the method of point-in-time assessments does not identify changing risk factors that are fast-evolving. The market-leading security tools employ business-relevant threat intelligence to help teams detect weaknesses that create risk. They also provide documentation, which is key. Auditors, engineers, and executives require clear documentation to demonstrate how continuous vulnerability monitoring leads to correct change control procedures and proper prioritization. A key aspect of automated vulnerability management is the combination of vulnerability scanning with patch management to maximize system defenses. Automated Vulnerability Management: How Patch Management and Vulnerability Scanning Work Together Traditionally, organizations use automated vulnerability management to decrease MTTR by creating service tickets/change requests and deploying secure patch solutions. However, organizations can automatically respond to detected threats if vulnerability scanning systems maintain a close link to patch management systems. The practice of automated vulnerability management integrates the steps of patch approval with rollout and verification, creating a single operational workflow. This approach provides an automation-based vulnerability management process that operates during scheduled maintenance periods. At the same time, a solution’s documentation system produces results for both auditable and transparent outcome-tracking. Reporting and Analytics for Effective Vulnerability Management Programs Custom dashboards aren’t just for engineers. Executives rely on them as well. A tool’s reporting system needs to deliver exposure trend information alongside SLA performance data and straightforward resolution paths. Leading platforms display CVEs through business-oriented visualizations that show how attacks could affect specific applications. Comparing Network Vulnerability Tools and Open Source Vulnerability Scanners Enterprise-grade scalability in commercial network vulnerability tools comes from: Asset correlation Risk-based prioritization ITSM/CMDB integrations Advanced reporting Network vulnerability tools support broad discovery operations and program governance, while open-source scanners deliver fast and targeted vulnerability assessments for development pipeline testing. Open-source scanners enable teams to perform fast PR reviews and test new security policies within CI/CD environments. The validation process enables these policies to become active in enterprise-wide scans, which network vulnerability tools handle. What Are the Top 10 Vulnerability Management Tools? The following summary of these 10 solutions’ key characteristics and relevant applications will help you match the right vulnerability management tool to your specific infrastructure. Tool Key Highlights Best For Tenable Nessus Expert Deep-dive scanning for hosts & web apps, plus basic cloud/external checks; prioritization with EPSS/CVSS/VPR and 450+ templates Teams requiring thorough, traditional scanning with some modern additions Rapid7 InsightVM Prioritizes fixes based on real-world attacker behavior; great for team workflows Enterprises wanting to focus on the most likely threats and streamline IT tasks Qualys VMDR An all-in-one platform for discovery, prioritization, and patching Large organizations looking for a single, integrated tool for the whole process Wiz Agentless cloud security that maps out potential attack paths Cloud-first companies that need to see the bigger picture of their cloud risk Prisma Cloud Secures the entire development lifecycle (coding to deployment) Dev-heavy teams needing to align security across the entire build process CrowdStrike Falcon Adds real-time vulnerability scanning to CrowdStrike's endpoint protection platform Companies already using CrowdStrike for endpoint security Microsoft Defender Vulnerability Management Native vulnerability management that's deeply integrated into the Microsoft ecosystem Organizations heavily invested in Microsoft products Orca Security Agentless scanning that pinpoints which vulnerabilities are actually exploitable Multi-cloud teams who want to quickly focus on the most critical, reachable risks Arctic Wolf Managed Risk Managed service with a concierge team that runs your vulnerability program for you Resource-constrained teams that want experts to handle vulnerability management Cisco Vulnerability Management (formerly Kenna Security) Uses data science to predict threats and suggest the most efficient fixes Organizations using multiple scanners that need a smart way to prioritize all the data Evaluating Vulnerability Management Solutions for Enterprises Enterprises need vulnerability management solutions that : Integrate with change workflows and CMDBs Expose robust APIs for automation and role‑based access controls Provide localized reporting and support delegated administration for global teams AlgoSec: A Leader in Vulnerability Management Solutions for Enterprises Getting a list of vulnerabilities from a scanner is just the first step. AlgoSec helps users understand and take action in the following ways: The platform provides context for all vulnerabilities in your system. Connect your current scanners to AlgoSec so it can identify and match its results to your operational business applications. See which specific services are affected by a server defect—not simply that you have a server problem. AlgoSec automates fixes without breaking things. The system not only produces automatic remediation rules, but its validation process verifies your changes to stop any accidental disruption of business operations. It helps you prioritize smarter. Develop a task list to match your organizational needs, allowing you to concentrate on the threats that endanger your essential applications the most. This saves time and eliminates unnecessary information. Choosing the right tool means moving beyond a simple list of flaws to understanding their real-world business impact. A context-aware approach is the key to managing risk effectively and ensuring your remediation efforts are both safe and efficient. Ready to see how an application-centric approach can boost your vulnerability management program? Learn more about AlgoSec and request a demo today! Get the latest insights from the 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

Explore Algosec's customer success stories to see how organizations worldwide improve security, compliance, and efficiency with our solutions. Global Transport Company Moves Firewall Changes Faster Organization Global Transport Industry Transportation Headquarters International Download case study Share Customer
success stories "Automation is definitely the way to go. We can now stay on top of the process even while we migrate our firewalls" Background A global transport and logistics company operates in nearly 100 countries and employs 50,000 people. From its 1000 offices, the company manages supply-chain solutions for thousands of customers all over the world each and every day. Found in virtually every industry, customers range from large international companies that require transportation services by sea and air to medium size business that ship mainly over the road. In addition, the company offers warehousing solutions on every continent to help customers with their logistics. Challenges Operating four major data centers on four continents, the security team’s daily tasks had become overwhelming. For the last several years, the company invested heavily in its rapidly growing IT and network security staff, but at its current size and level of activity, finding enough experienced staffers was practically impossible and too expensive to sustain. The only way forward was a network security automation solution that would: Automate many of the daily change requests across the 50+ firewalls, saving time so that IT and security staffers could work on other critical tasks Eliminate errors in firewall rules Demonstrate the ability to work with Cisco FirePower NGFW in the future The company also presented a special challenge in the form of its already-existing deployment of Cisco Bridge Virtual Interface (BVI) devices. The BVIs essentially act as Layer 2 firewalls. Since they, too, store firewall rules, they have to be included in the automation process. Solution The company brought in three leading Network Security Policy Management (NSPM) solutions to compete in a three-month proof-of-concept contest. The combination of AlgoSec Firewall Analyzer (AFA) and AlgoSec FireFlow (AFF) stood above the rest. AlgoSec Firewall Analyzer ensures security and compliance by providing visibility and analysis into complex network security policies. AlgoSec FireFlow improves security and saves security staffs’ time by automating the entire security policy change process, eliminating manual errors, and reducing risk. Results The two AlgoSec products, Firewall Analyzer and FireFlow went into production in mid-2018 where they have been working ever since, with the following results: Usability was outstanding—the products integrate well and are easy to learn and operate Single-pane-of-glass visibility across the network was suddenly available and useful to the network security staff The automation demonstrated the ability to slash the time required to push firewall changes and to eliminate errors The company found AlgoSec’s Tier 3 support to be impressive. Working directly with Tier 3 personnel and the ever-eager AlgoSec developers, the company’s Senior Technology Architect and other senior security analysts were able to work closely with AlgoSec to solve the BVI conundrum and implement the entire AlgoSec solution. Schedule time with one of our experts

Webinars Cisco ACI & AlgoSec: Achieving Application-driven Security Across your Hybrid Network As your network extends into hybrid and multi-cloud environments, including software-defined networks such as Cisco ACI, managing security policies within your hybrid estate becomes more and more complex. Because each part of your network estate is managed in its own silo, it’s tough to get a full view of your entire network. Making changes across your entire network is a chore and validating your entire network’s security is virtually impossible. Learn how to unify, consolidate, and automate your entire network security policy management including both within the Cisco ACI fabric and elements outside the fabric. In this session Omer Ganot, AlgoSec’s Product Manager, will discuss how to: Get full visibility of your entire hybrid network estate, including items within the Cisco ACI security environment, as well as outside it. Unify, consolidate, and automate your network security policy management, including elements within and outside of the Cisco ACI fabric. Proactively assess risk throughout your entire network, including Cisco ACI contracts, and recommend the necessary changes to eliminate misconfigurations and compliance violations February 5, 2020 Omer Ganot Product Manager Relevant resources AlgoSec Joins Cisco’s Global Price List Keep Reading Migrating and Managing Security Policies in a Segmented Data Center Keep Reading AlgoSec Cisco ACI App Center Demo Watch Video 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

AlgoSec’s latest product release provides application-based identification and risk analysis in multi-cloud environments and on-premises. Gain more insights into multi cloud application connectivity with AlgoSec A32.50 AlgoSec’s latest product release provides application-based identification and risk analysis in multi-cloud environments and on-premises. January 10, 2023 Speak to one of our experts RIDGEFIELD PARK, N.J., January 10, 2023 – AlgoSec, a global cybersecurity leader in securing application connectivity, announced today the release of its latest product version A32.50. AlgoSec A32.50 provides a powerful solution for organizations to secure application connectivity in their hybrid and multi-cloud estate. With A32.50, organizations obtain granular visibility and discovery of applications, enabling identification and risk analysis in multi-cloud environments and on-premises. The key benefits that AlgoSec A32.50 delivers to IT, network, and security experts include: Application awareness for Cisco Firepower and Palo Alto’s Panorama as part of the change management cycle Enables SecOps teams to update firewall application information as part of the firewall rules in the workflow automation Extended SASE/SSE management Provides Zscaler users management capabilities focused on risk, regulatory compliance, and policy optimization. As an early availability, A32.50 supports Prisma Access visibility of mobile users. Ensure ongoing regulatory compliance with new and updated out of the box reports Generate full audit report for the ECB security of internet payments and maintain ongoing compliance with the regulatory requirements. Additionally, utilize updated PCI and SWIFT requirement reports. Integrate cloud security into your IaC initiative while streamlining processes Embed cloud security checks into the DevSecOps native tools, allowing them to proactively identify and mitigate risk as part of their ongoing process. 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

Discover how micro-segmentation can help you reduce the surface of your network attacks and protect your organization from cyber-attacks. Webinars CTO Round Table: Fighting Ransomware with Micro-segmentation In the past few months, we’ve witnessed a steep rise in ransomware attacks targeting anyone from small companies to large, global enterprises. It seems like no organization is immune to ransomware. So how do you protect your network from such attacks? Join our discussion with AlgoSec CTO Prof. Avishai Wool and Guardicore CTO Ariel Zeitlin, and discover how micro-segmentation can help you reduce your network attack surface and protect your organization from cyber-attacks. Learn: Why micro-segmentation is critical to fighting ransomware and other cyber threats. Common pitfalls organizations face when implementing a micro-segmentation project How to discover applications and their connectivity requirements across complex network environments. How to write micro-segmentation filtering policy within and outside the data center November 17, 2020 Ariel Zeitlin CTO Guardicore Prof. Avishai Wool CTO & Co Founder AlgoSec Relevant resources Defining & Enforcing a Micro-segmentation Strategy Read Document Building a Blueprint for a Successful Micro-segmentation Implementation Keep Reading Ransomware Attack: Best practices to help organizations proactively prevent, contain and respond 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

Convergence has been claimed. Security orgs merged their teams, aligned their titles, and drew the new boxes on the whiteboard. The... Convergence didn’t fail, compliance did. Adel Osta Dadan 2 min read Adel Osta Dadan 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 6/17/25 Published Convergence has been claimed. Security orgs merged their teams, aligned their titles, and drew the new boxes on the whiteboard. The result: security teams are now responsible for both cloud and on-premises network environments. But for many of those teams, compliance is still running on fumes. The reporting lines changed. The responsibilities increased. The oversight? Still patchy. The systems? Still fragmented. And the ability to demonstrate consistent policy enforcement across hybrid environments—where compliance lives or dies—has never been more at risk. This isn’t an edge case. It’s structural. And it’s quietly putting every converged team in a bind. The illusion of control If convergence was supposed to simplify compliance, most teams missed the memo. Cloud-native controls don’t sync with on-prem rule sets. Application deployments move faster than the audits tracking them. Policies drift. Risk assessments stall out. And when the next audit comes knocking, security teams are left reconciling evidence after the fact—manually stitching together logs, policies, and screenshots across tools that don’t talk to each other. The result? Ownership without visibility. Policy without context. Responsibility without control. Compliance at the application layer—or nowhere Security and compliance are often treated as parallel tracks. But in hybrid environments, they’re the same problem. The more distributed your network, the more fragmented your enforcement—and the harder it becomes to map controls to real business risk. What matters isn’t whether a port is open. It’s whether the application behind it should be reachable from that region, that VPC, or that user. That requires context. And today, context lives at the application layer. This is where AlgoSec Horizon changes the equation. AlgoSec Horizon is the first platform built to secure application connectivity across hybrid networks—with compliance embedded by design. Horizon: compliance that knows what it’s looking at With Horizon, compliance isn’t an add-on. It’s the outcome of deep visibility and policy awareness at the level that actually matters: the business application. Our customers are using Horizon to: Automatically discover and map every business application—including shadow IT and unapproved flows Simulate rule changes in advance, avoiding deployment errors that compromise compliance Track and enforce policies in context, with real-time validation against compliance frameworks Generate audit-ready reports across hybrid networks without assembling data by hand It’s compliance without the swivel chair. And it’s already helping converged teams move faster—without giving up control. Compliance can’t be an after-thought. Security convergence wasn’t the mistake. Stopping at structure was. When compliance is left behind, the risk isn’t just audit failure—it’s operational drag. Policy friction. Delays in application delivery. Missed SLAs. Because the real impact of compliance gaps isn’t found in the SOC—it’s found in the business outcomes that stall because security couldn’t keep pace. Horizon closes that gap. Because in a world of converged teams and hybrid environments, security has to operate with complete visibility—and compliance has to work at the speed of the application. Schedule a demo Related Articles 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 5 Multi-Cloud Environments Cloud Security 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

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. Firewall 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. 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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Securely accelerate application delivery by automating application connectivity and security policy across the hybrid network estate. 솔루션 환영합니다! 클라우드 보안 통제 및 사내 구축 방화벽에 대한 네트워크 보안 정책의 관리는 세심한 균형을 요하는 작업입니다. 한편으로 공격 범위(attack surface)라고 불리는 외부 위협에 대한 노출을 최소화하여 리스크를 줄여야 하며, 다른 한편으로는 중요한 비즈니스 애플리케이션에 대한 연결성을 제공함으로써 생산성을 향상시켜야 합니다. 하지만, 네트워크 보안 정책 관리 프로세스는 늘 복잡하고 오류가 많아 시간 소모적이었습니다. 이제는 더 이상 그럴 필요가 없습니다. AlgoSec은 사내 (On-premise) 및 클라우드 상의 네트워크 보안 정책 관리를 간소화하고 자동화하여 기업의 민첩성과 보안을 강화하고 언제나 규정을 준수하는 환경을 제공합니다. 보안 정책 관리에 대한 독자적인 라이프사이클 접근방식 AlgoSec은 보안 정책 라이프사이클을 전반적으로 관리하여 고객의 비즈니스 애플리케이션에 대한 지속적이며 안전한 연결성을 제공한다는 점에서 독보적입니다. 단일 창을 통해 애플리케이션 연결성 요구사항을 자동으로 검색할 수 있고, 리스크를 사전에 분석하며, 네트워크 보안 변경 계획을 신속하게 수립하여 실행할 수 있으며 방화벽 규칙을 안전하게 제거할 수 있습니다. 아울러, 고객의 이기종 환경 전반에 걸쳐 이 모든 작업이 완벽히 조화를 이루어 자동으로 원활하게 이루어집니다. AlgoSec 솔루션을 이용하면 클라우드, SDN, 사내망 (on-premise)에 걸쳐 네트워크 보안 정책관리를 통합 할수 있습니다 지속적으로 규제를 준수하고, 방화벽 감사 준비에 소요되는 시간과 비용을 현저히 줄일 수 있습니다 신속하고 안전하게 애플리케이션 연결성을 제공하고, 네트워크 관련 가동중단을 방지할 수 있습니다 보안, 네트워크 및 애플리케이션 팀 간의 연계와 DevSecOps를 발전시킵니다 방화벽 변경 관리를 자동화하고 구성 오류를 제거할 수 있습니다 정확한 보안 구성 및 효과적인 네트워크 분할 을 통해 리스크를 줄일 수 있습니다 솔루션 보안 정책 네트워크 분석 더 많은 정보 AlgoSec Firewall Analyzer 보안 정책 변경 자동화 더 많은 정보 AlgoSec FireFlow ROI 계산기 AlgoSec 솔루션 브로슈어 문의하기 Algosec Korea 탁정수 지사장 Phone: +82-10-8994-7121
Email: [email protected] Algosec Korea 정욱 이사 (Sales Engineer) Phone: +82-10-9953-5717
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