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The firewall audit checklist: Six best practices for simplifying firewall compliance and risk mitigation Download PDF Schedule time with one of our experts Schedule time with one of our experts Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Continue

A firewall that runs 24/7 requires a good amount of computing resources. Especially if you are running a complex firewall system, your... Firewall Change Management Firewall performance tuning: Common issues & resolutions 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 8/9/23 Published A firewall that runs 24/7 requires a good amount of computing resources. Especially if you are running a complex firewall system, your performance overhead can actually slow down the overall throughput of your systems and even affect the actual functionalities of your firewall. Here is a brief overview of common firewall performance issues and the best practices to help you tune your firewall performance . 7 Common performance issues with firewalls Since firewall implementations often include some networking hardware usage, they can slow down network performance and traffic bottlenecks within your network. 1. High CPU usage The more network traffic you deal with, the more CPU time your server will need. When a firewall is running, it adds to CPU utilization since the processes need more power to execute the network packet analysis and subsequent firewall This may lead to firewall failures in extreme cases where the firewall process is completely shut down or the system experiences a noticeable lag affecting overall functionality. A simple way to resolve this issue would be to increase the hardware capabilities. But as that might not be a viable solution in all cases, you must consider minimizing the network traffic with router-level filtering or decreasing the server load with optimized 2. Route flapping Router misconfiguration or hardware failure can cause frequent advertising of alternate routes. This will increase the load on your resources and thus lead to performance issues. 3. Network errors and discards A high number of error packets or discarded packets can burden your resources as these packets are still processed by the firewall even when they ultimately turn out to be dud in terms of traffic. Such errors usually happen when routers try to reclaim some buffer space. 4. Congested network access link Network access link congestion can be caused due to a bottleneck happening between a high bandwidth IP Network and LAN. When there is high traffic, the router queue gets filled and causes jitters and time delays. When there are more occurrences of jitter, more packets are dropped on the receiving end, causing a degradation of the quality of audio or video being transmitted. This issue is often observed in VoIP systems . 5. Network link failure When packet loss continues for over a few seconds, it can be deemed a network link failure. While re-establishing the link could take just a few seconds, the routers may already be looking for alternate routes. Frequent network link failures can be a symptom of power supply or hardware issues. 6. Misconfigurations Software or hardware misconfigurations can easily lead to overloading of LAN, and such a burden can easily affect the system’s performance. Situations like these can be caused by misconfigured multicast traffic and can affect the overall data transfer rate of all users. 7. Loss of packets Loss of packets can cause timeout errors, retransmissions, and network slowness. Loss of packets can happen due to delayed operations, server slowdown, misconfiguration, and several other reasons. How to fine-Tune your firewall performance Firewall performance issues can be alleviated with hardware upgrades. But as you scale up, upgrading hardware at an increasing scale would mean high expenses and an overall inefficient system. A much better cost-effective way to resolve firewall performance issues would be to figure out the root cause and make the necessary updates and fixes to resolve the issues. Before troubleshooting, you should know the different types of firewall optimization techniques: Hardware updates Firewall optimization can be easily achieved through real-time hardware updates and upgrades. This is a straightforward method where you add more capacity to your computing resources to handle the processing load of running a firewall. General best practices This involves the commonly used universal best practices that ensure optimized firewall configurations and working. Security policies, data standard compliances , and keeping your systems up to date and patched will all come under this category of optimizations. Any optimization effort generally applied to all firewalls can be classified under this type. Vendor specific Optimization techniques designed specifically to fit the requirements of a particular vendor are called vendor-specific optimizations. This calls for a good understanding of your protected systems, how traffic flows, and how to minimize the network load. Model specific Similar to vendor-specific optimizations, model-specific optimization techniques consider the particular network model you use. For instance, the Cisco network models usually have debugging features that can slow down performance. Similarly, the PIX 6.3 model uses TCP intercept that can slow down performance. Based on your usage and requirements, you can turn the specific features on or off to boost your firewall performance. Best practices to resolve the usual firewall performance bottlenecks Here are some proven best practices to improve your firewall’s performance. Additionally, you might also want to read Max Power by Timothy Hall for a wholesome understanding. Standardize your network traffic Any good practice starts with rectifying your internal errors and vulnerabilities. Ensure all your outgoing traffic aligns with your cybersecurity standards and regulations. Weed out any application or server sending out requests that don’t comply with the security regulations and make the necessary updates to streamline your network. Router level filtering To reduce the load on your firewall applications and hardware, you can use router-level network traffic filtering. This can be achieved by making a Standard Access List filter from the previously dropped requests and then routing them using this list for any other subsequent request attempts. This process can be time-consuming but is simple and effective in avoiding bottlenecks. Avoid using complicated firewall rules Complex firewall rules can be resource heavy and place a lot of burden on your firewall performance. Simplifying this ruleset can boost your performance to a great extent. You should also regularly audit these rules and remove unused rules. To help you clean up firewall rules, you can start with Algosec’s firewall rule cleanup and performance optimization tool . Test your firewall Regular testing and auditing of your firewall can help you identify any probable causes for performance slowdown. You can collect information on your network traffic and use it to optimize how your firewall operates. You can use Algosec’s firewall auditor services to take care of all your auditing requirements and ensure compliance at all levels. Make use of common network troubleshooting tools To analyze the network traffic and troubleshoot your performance issues, you can use common network tools like netstat and iproute2. These tools provide you with network stats and in-depth information about your traffic that can be well utilized to improve your firewall configurations. You can also use check point servers and tools like SecureXL, and CoreXL. Follow a well-defined security policy As with any security implementation, you should always have a well-defined security policy before configuring your firewalls. This gives you a good idea of how your firewall configurations are made and lets you simplify them easily. Change management is also essential to your firewall policy management process . You should also document all the changes, reviews, and updates you make to your security policies to trace any problematic configurations and keep your systems updated against evolving cyber threats. A good way to mitigate security policy risks is to utilize AlgoSec. Network segmentation Segmentation can help boost performance as it helps isolate network issues and optimize bandwidth allocation. It can also help to reduce the traffic and thus further improve the performance. Here is a guide on network segmentation you can check out. Automation Make use of automation to update your firewall settings. Automating the firewall setup process can greatly reduce setup errors and help you make the process more efficient and less time-consuming. You can also extend the automation to configure routers and switches. Algobot is an intelligent chatbot that can effortlessly handle network security policy management tasks for you. Handle broadcast traffic efficiently You can create optimized rules to handle broadcast traffic without logging to improve performance. Make use of optimized algorithms Some firewalls, such as the Cisco Pix, ASA 7.0 , Juniper network models, and FWSM 4.0 are designed to match packets without dependency on rule order. You can use these firewalls; if not, you will have to consider the rule order to boost the performance. To improve performance, you should place the most commonly used policy rules on the top of the rule base. The SANS Institute recommends the following order of rules: Anti-spoofing filters User permit rules Management permit rules Noise drops Deny and alert Deny and log DNS objects Try to avoid using DNS objects that need DNS lookup services. This slows down the firewall. Router interface design Matching the router interface with your firewall interface is a good way to ensure good performance. If your router interface is half duplex and the firewall is full duplex, the mismatch can cause some performance issues. Similarly, you should try to match the switch interface with your firewall interface, making them report on the same speed and mode. For gigabit switches, you should set up your firewall to automatically adjust speed and duplex mode. You can replace the cables and patch panel ports if you cannot match the interfaces. VPN If you are using VPN and firewalls, you can separate them to remove some VPN traffic and processing load from the firewall and thus increase the performance. UTM features You can remove the additional UTM features like Antivirus, and URL scanning features from the firewall to make it more efficient. This does not mean you completely eliminate any additional security features. Instead, just offload them from the firewall to make the firewall work faster and take up fewer computing resources. Keep your systems patched and updated Always keep your systems, firmware, software, and third-party applications updated and patched to deal with all known vulnerabilities. Schedule a demo Related Articles Navigating Compliance in the Cloud AlgoSec Cloud Mar 19, 2023 · 2 min read 5 Multi-Cloud Environments Cloud Security Mar 19, 2023 · 2 min read Convergence didn’t fail, compliance did. Mar 19, 2023 · 2 min read Speak to one of our experts Speak to one of our experts Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Schedule a call

Increasing Cisco ACI adoption with AlgoSec Download PDF Schedule time with one of our experts Schedule time with one of our experts Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Continue

The Business benefits of application centric zero trust E-BOOK Download PDF Schedule time with one of our experts Schedule time with one of our experts Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Continue

Webinars [Panel] How Financial Institutions Can Achieve Network Security and Compliance Financial institutions have strict network security requirements, which sometimes hinder innovation and digital transformation. Security and regulatory requirements act as a barrier to innovation. However, financial institutions can enable business innovation, while still achieving network security and compliance. Watch AlgoSec’s panel discussion, as Asher Benbenisty, Director of Product Marketing, and Yitzy Tannenbaum, Product Marketing Manager, discuss how financial institutions can simplify the network security management, reduce risk and ensure continuous compliance. They discuss: How intelligent automation helps overcome security management intricacy How to make sure network changes meet compliance requirements and pass regulatory audits the first time Industry metrics so you can benchmark your own organization as well as see how the finance sector compares to other industries Case studies from other financial institutions September 8, 2020 Yitzy Tannenbaum Product Marketing Manager Asher Benbenisty Director of product marketing Relevant resources Automated Security Policy Allows Financial Institutions to make the Triple Play Keep Reading Security policy management for financial institutions 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

Organizations transitioning to the cloud require robust security concepts to protect their most critical assets, including business... Cloud Security Top Two Cloud Security Concepts You Won’t Want to Overlook 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 11/24/22 Published Organizations transitioning to the cloud require robust security concepts to protect their most critical assets, including business applications and sensitive data. Rony Moshkovitch, Prevasio’s co-founder, explains these concepts and why reinforcing a DevSecOps culture would help organizations strike the right balance between security and agility. In the post-COVID era, enterprise cloud adoption has grown rapidly. Per a 2022 security survey , over 98% of organizations use some form of cloud-based infrastructure. But 27% have also experienced a cloud security incident in the previous 12 months. So, what can organizations do to protect their critical business applications and sensitive data in the cloud? Why Consider Paved Road, Guardrails, and Least Privilege Access for Cloud Security It is in the organization’s best interest to allow developers to expedite the lifecycle of an application. At the same time, it’s the security teams’ job to facilitate this process in tandem with the developers to help them deliver a more secure application on time. As organizations migrate their applications and workloads to a multi-cloud platform, it’s incumbent to use a Shift left approach to DevSecOps. This enables security teams to build tools, and develop best practices and guidelines that enable the DevOps teams to effectively own the security process during the application development stage without spending time responding to risk and compliance violations issued by the security teams. This is where Paved Road, Guardrails and Least Privilege could add value to your DevSecOps. Concept 1: The Paved Road + Guardrails Approach Suppose your security team builds numerous tools, establishes best practices, and provides expert guidance. These resources enable your developers to use the cloud safely and protect all enterprise assets and data without spending all their time or energy on these tasks. They can achieve these objectives because the security team has built a “paved road” with strong “guardrails” for the entire organization to follow and adopt. By following and implementing good practices, such as building an asset inventory, creating safe templates, and conducting risk analyses for each cloud and cloud service, the security team enables developers to execute their own tasks quickly and safely. Security staff will implement strong controls that no one can violate or bypass. They will also clearly define a controlled exception process, so every exception is clearly tracked and accountability is always maintained. Over time, your organization may work with more cloud vendors and use more cloud services. In this expanding cloud landscape, the paved road and guardrails will allow users to do their jobs effectively in a security-controlled manner because security is already “baked in” to everything they work with. Moreover, they will be prevented from doing anything that may increase the organization’s risk of breaches, thus keeping you safe from the bad guys. How Paved Road Security and Guardrails Can Be Applied Successfully Example 1: Set Baked-in Security Controls Remember to bake security into reusable Terraform templates or AWS CloudFormation modules of paved roads. You may apply this tactic to provision new infrastructure, create new storage buckets, or adopt new cloud services. When you create a paved road and implement appropriate guardrails, all your golden modules and templates are already secure from the outset – safeguarding your assets and preventing undesirable security events. Example 2: Introducing Security Standardizations When creating resource functions with built-in security standards, developers should adhere to these standards to confidently configure required resources without introducing security issues into the cloud ecosystem. Example 3: Automating Security with Infrastructure as Code (IaC) IaC is a way to manage and provision new infrastructure by coding specifications instead of following manual processes. To create a paved road for IaC, the security team can introduce tagging to provision and track cloud resources. They can also incorporate strong security guardrails into the development environment to secure the new infrastructure right from the outset. Concept 2: The Principle of Least Privileged Access (PoLP) The Principle of Least Privilege Access (PoLP) is often synonymous with Zero Trust. PoLP is about ensuring that a user can only access the resources they need to complete a required task. The idea is to prevent the misuse of critical systems and data and reduce the attack surface to decrease the probability of breaches. How Can PoLP Be Applied Successfully Example 1: Ring-fencing critical assets This is the process of isolating specific “crown jewel” applications so that even if an attacker could make it into your environment, they would be unable to reach that data or application. As few people as possible would be given credentials that allow access, therefore following least privilege access rules. Crown jewel applications could be anything from where sensitive customer data is stored, to business-critical systems and processes. Example 2: Establishing Role Based Access Control (RABC) Based on the role that they hold at the company, RBAC or role-based access control allows specific access to certain data or applications, or parts of the network. This goes hand in hand with the principle of least privilege, and means that if credentials are stolen, the attackers are limited to what access the employee in question holds. As this is based on users, you could isolate privileged user sessions specifically to keep them with an extra layer of protection. Only if an administrator account or one with wide access privilege is stolen, would the business be in real trouble. Example 3: Isolate applications, tiers, users, or data This task is usually done with micro-segmentation, where specific applications, users, data, or any other element of the business is protected from an attack with internal, next-gen firewalls. Risk is reduced in a similar way to the examples above, where the requisite access needed is provided using the principle of least privilege to allow access to only those who need it, and no one else. In some situations, you might need to allow elevated privileges for a short period of time, for example during an emergency. Watch out for privilege creep, where users gain more access over time without any corrective oversight. Conclusion and Next Steps Paved Road, Guardrails and PoLP concepts are all essential for a strong cloud security posture. By adopting these concepts, your organization can move to the next stage of cloud security maturity and create a culture of security-minded responsibility at every level of the enterprise. The Prevasio cloud security platform allows you to apply these concepts across your entire cloud estate while securing your most critical applications. Schedule a demo Related Articles Navigating Compliance in the Cloud AlgoSec Cloud Mar 19, 2023 · 2 min read 5 Multi-Cloud Environments Cloud Security Mar 19, 2023 · 2 min read Convergence didn’t fail, compliance did. Mar 19, 2023 · 2 min read Speak to one of our experts Speak to one of our experts Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Schedule a call

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

Best practices for network security governance in AWS and hybrid network environments Webinars Overcoming the Hybrid Cloud Policy Management Challenge: A Panel Discussion Visibility May 27, 2020 Omer Ganot Product Manager Yonatan Klein irector of Product Management Relevant resources State of cloud security: Concerns, challenges, and incidents Read Document Demystifying Network Security in Hybrid Cloud Environments Keep Reading A Pragmatic Approach to Network Security Across Your Hybrid Cloud Environment 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

Defining & Enforcing a Micro-segmentation Strategy Download PDF Schedule time with one of our experts Schedule time with one of our experts Work email* First name* Last name* Company* country* Select country... Short answer* By submitting this form, I accept AlgoSec's privacy policy Continue