Vous avez du mal à améliorer les performances de votre réseau. Quels sont les meilleurs outils d’analyse à utiliser ?

We use packet sniffer tools to capture and analyze network traffic, pinpoint on performance issue. Monitor network connection track flow of data. Analyze application layer protocols and payload to monitor the performance of specific application. They are aused for security analysis intrusion detection Popular ones are Wireshark- It support wide range of protocols provide detail packet level analysis tcpdump-Command line utility available for linux, capture and display network traffic real time and filtering capability Microsoft network monitor - For Windows environment, allow us to capture and analyze network traffic using GUI advance filter and analysis We gain valuable insight using these tools , identify bottlenecks and optimize network

1.Network Diagnostics Ping and Traceroute: Basic but crucial tools for network troubleshooting, helping identify connectivity and latency issues. Netcat: A versatile networking utility which reads and writes data across network connections, using the TCP/IP protocol. GNS3: Offers a virtual environment to simulate 2. Security Analysis Nmap: An open-source security scanner used for network discovery and security auditing. It’s useful for monitoring host or service uptime and mapping network attack surfaces. Tenable Nessus: Advanced tool for network vulnerabilities scanning, configuration auditing, and patch management among others. 4 Cloud-Based Network Management Cisco Meraki

Identify dominant traffic types: Understand which applications and protocols consume the most bandwidth on your network. Detect security threats: Analyze packet content to identify suspicious activity that might indicate a potential security breach. Troubleshoot network issues: Diagnose bottlenecks, latency problems, and other network performance issues by pinpointing specific traffic sources.

Some of the best analysis tools to improve network performance include: 1. Wireshark is very good with packet analysis and network troubleshooting. 2. SolarWinds Network Performance Monitor: For comprehensive network monitoring and analysis. 3. NetFlow Analyzer: To analyze network traffic patterns and bandwidth utilization.

Packet sniffers like Wireshark capture and analyze network traffic in real-time, helping identify performance bottlenecks, anomalies, and security threats by examining individual data packets.

In my experience, network mapping tools have been instrumental in gaining a comprehensive understanding of network architecture and topology. For instance, during a recent project aimed at optimizing network performance, we utilized a network mapping tool to visualize the interconnectedness of various devices and identify potential bottlenecks. By creating a detailed map of the network layout, we were able to pinpoint areas of congestion and plan strategic upgrades to enhance overall performance.

One of the great advantages of having your entire application infrastructure hosted on Azure is its native feature, Application Insights. It’s a powerful analysis tool that has completely transformed the way we manage our network. Capable of tracking message flow through Operation IDs, it allows professionals to have a clear view of all data traffic, from a single message in Service Bus to a REST API call, and even database connections. This aids not only in the identification and resolution of issues but also enables performance optimization by facilitating better infrastructure planning.

A powerful tool for details analysis of existing network architecture. Shows a detailed diagnosis of network congestion though not straightforward to remove network latency by it.

Tools like Nmap create visual representations of network topology, mapping out connected devices, ports, and services. They help pinpoint network congestion points and optimize device placement for better performance.

Based on my solo SA experience, I recommend network mappers. Network latency can be difficult to solve at times. Network mappers are an excellent tool for visualisation and identifying potential points of intervention. Then comes bandwidth analysis, and finally packet sniffers should help you understand your network issues. Good luck! 😊

Use SolarWinds Network Bandwidth Analyzer Pack, as it can combine several tools for network analysis, such as NetFlow Traffic Analyzer and Network Performance Monitor

One of the common root causes of all the complaints as ISP is that customer is Utilizing his full subscribed bandwidth and complaining that network feels a little slow. Regularly monitoring your bandwidth Utilization with Bandwidth analyzers would help understanding the performance.

Network-monitoring software is an important administrative tool when it comes to operating and maintaining a network, regardless of the size as often there are few symptoms or warnings prior to a network outage. PRTG can track system anomalies and provide early warnings to potentially calamitous network events thereby giving the administrator sufficient time to take corrective action.

Bandwidth analyzers such as SolarWinds NetFlow Traffic Analyzer monitor bandwidth usage and traffic patterns, allowing you to identify bandwidth-hogging applications or users and optimize network resources accordingly.

Yo uso Wireshark: Es una herramienta de análisis de protocolos de red que proporciona una gran cantidad de información sobre el tráfico de red, incluido el ancho de banda utilizado por diferentes aplicaciones y protocolos.

Performance testing tools play a crucial role in assessing network responsiveness and identifying potential areas for improvement. For example, in a recent network upgrade initiative, we employed performance testers to simulate heavy network loads and evaluate how the infrastructure coped with increased traffic. By measuring key performance metrics such as throughput and packet loss, we were able to fine-tune network configurations and optimize resource allocation, resulting in noticeable improvements in network performance and reliability.

Performance Tester is the ideal tool to ensure your network is up to part so you can make any necessary changes. Testing your network will actually gives you enough information to scale accordingly.

"Performance testers are software tools or systems used to assess the speed, responsiveness, and stability of software applications, websites, or network infrastructures under various conditions. They simulate user loads and interactions to measure how systems perform under stress or peak usage. Performance testers are essential for developers and system administrators to identify bottlenecks, optimize performance, and ensure a positive user experience."

performance Tester will help you find the issue and by fixing that will improve Network performance. we used solarwind Network performance monitor.

Performance testing tools like iPerf measure network throughput, latency, and packet loss under various conditions. They help simulate real-world scenarios to assess network performance and identify areas for improvement.

Configuration Managers are software tools or systems designed to streamline and automate the management of configuration settings and changes within a software or IT infrastructure. They ensure consistency, reliability, and efficiency by tracking, controlling, and coordinating configuration items throughout their lifecycle.

I find using an IAC approach on networking is very effective in reducing issues as we are sure that it is not a misconfiguration that introduced the problem, Ansible is commonly used here, I tend to suggest AWX as it has the graphical interface on top of Ansible and is a centralized approach.

Microsoft Endpoint Configuration Manager, formerly known as System Center Configuration Manager (SCCM), is a Windows-centric endpoint management tool for devices within an Active Directory domain.

A custom Network Performance assessment is the thing to do where you select a dedicated PC connected to the wired n/w in each site and run wireshark tool continually for 5 days. Keep uploading and downloading files of different sizes and collect the traces to analyze. Is the DNS centralized or every site has a local DNS server (Geo DNS) is a crucial thing to check. Once the traces are run, analyze the traffic, find the causes of the performance and take appropriate steps.

Security auditing tools are essential for safeguarding network integrity and resilience. In a recent cybersecurity assessment, we leveraged security auditors to conduct comprehensive scans and vulnerability assessments across our network infrastructure. By proactively identifying and addressing security vulnerabilities, such as outdated firmware or misconfigured access controls, we bolstered our network's defenses and reduced the risk of potential breaches or disruptions. Moreover, regular security audits helped instill confidence among stakeholders and demonstrate our commitment to maintaining a secure and performant network environment.

Security auditing tools are invaluable for assessing your stance against cyber threats and upholding strong defenses. I really like using Nessus for this. It does a great job scanning for vulnerabilities, making sure we meet security standards, and keeping an eye on any odd activity in the network. By running regular audits with Nessus, I can spot and fix security issues before they're exploited by attackers. This proactive approach doesn't just beef up our network defenses; it also keeps the network running smoothly, which helps avoid the kind of disruptions that security problems can cause. Regularly using Nessus really helps us keep important services secure and running efficiently.

As ferramentas de auditoria de segurança desempenham um papel crucial na proteção das redes, ao avaliar sua postura de segurança, identificar vulnerabilidades e garantir conformidade com padrões de segurança. Ao realizar auditorias regularmente, você pode antecipar e corrigir pontos fracos, fortalecendo assim suas defesas contra ameaças cibernéticas. Isso não apenas melhora a segurança, mas também contribui para um desempenho mais estável da rede, reduzindo as chances de interrupções causadas por incidentes de segurança.

Security Auditors are professionals responsible for evaluating the effectiveness of an organization's security measures to protect against unauthorized access, data breaches, and other security threats. They conduct comprehensive assessments, identify vulnerabilities, and recommend solutions to enhance security posture and compliance with regulations and standards.

Security auditing tools like Nessus or OpenVAS assess network security posture, identifying vulnerabilities, misconfigurations, and compliance issues that could impact performance or pose security risks.

Another aspect worth considering is the integration of these analysis tools into a centralized management platform for enhanced visibility and control. For instance, leveraging a unified network management solution allows organizations to streamline monitoring, analysis, and remediation efforts across their entire network infrastructure. By consolidating disparate tools and data sources into a single interface, network administrators can more efficiently identify and address performance issues, security threats, and configuration discrepancies. This holistic approach to network management fosters greater agility, scalability, and resilience in today's dynamic IT environments.

Netspot: It focuses on wireless network analysis and monitoring. Zabbix: It is an open-source and highly customizable for a range of network sizes. Nagios core: It is also an open-source solution which is popular for its flexibility.

All of the tools described before are pivotal tools to inspect and analyze network traffic, packet loss, bandwidth consumption, etc aimed to have a better understanding on how your network baseline should be. However, sometimes network administrators overlook by accident some basic aspects of a switched network. For example, after designing and implementing the network, a fine tunning is always a good practice. In particular, optimizing switches configuration (e.g. spanning-tree, trunking, etc) or disabling unnecesary services or reviewing QoS policies. Those simple and basic steps can help improve network performance

These are all good tools to use. As with any troubleshooting, a combination may be required. Use the strengths of each to your advantage!!!