# NetAccura — English

> NetAccura WAN emulators cover 1G–400G, with 11 link impairment types and up to 4096 virtual links for repeatable testing of complex networks. Features include protocol fault injection, scenario replay, standard RESTful API automation and custom development support.

## Pages

- [WAN Emulators | 1G–400G Network Emulation - NetAccura | NetAccura](https://www.netaccura.com/en): NetAccura WAN emulators cover 1G–400G, with 11 link impairment types and up to 4096 virtual links for repeatable testing of complex networks. Features include protocol fault injection, scenario replay, standard RESTful API automation and custom development support.
- [About Us | Specialists in Network Impairment Emulation | NetAccura](https://www.netaccura.com/en/about): NetAccura develops 1G–400G WAN emulators, drawing on a founder's network testing experience since 2010. Our team combines field expertise, AI-assisted development and automated validation to provide product selection, technical support, test scripts and custom development.
- [Contact Us - WAN Emulator Selection and Technical Advice | NetAccura](https://www.netaccura.com/en/contact): Contact NetAccura for 1G–400G WAN emulator selection, pricing, demonstrations and trials. Get troubleshooting, RESTful API automation scripts and custom development support through a technical adviser, phone or WeChat.
- [Privacy Policy | NetAccura](https://www.netaccura.com/en/privacy): Shenzhen NetAccura Technology Co., Ltd. (NetAccura) Privacy Policy: how we collect, use and protect your personal information.
- [Network Quality Measurement Software | BestPerf Link Acceptance and Troubleshooting | NetAccura](https://www.netaccura.com/en/products/bestperf): BestPerf is NetAccura's active two-endpoint network quality measurement software. Measure RTT, directional packet loss, jitter, micro-outages and TCP throughput, with load testing, PDF reports and impairment scenario export for link acceptance, field troubleshooting and research. Available for Windows, macOS and Linux.
- [Nanosecond Delay Controller - Financial Production Links | NetAccura](https://www.netaccura.com/en/products/delay-controller-fpga): NetAccura Delay Controller uses FPGA hardware for nanosecond delay control in financial trading, colocation, dedicated circuits and critical production links. It supports continuous operation, 1G to 100G links, VLAN classification and asymmetric bidirectional delay.
- [Distributed Network Emulator | Multi-Node and Cloud-Edge-Device Emulation | NetAccura](https://www.netaccura.com/en/products/distributed-link-emulator): Use NetAccura WAN emulators for distributed network emulation. Set separate network conditions for endpoints, edge nodes and central clouds to support research, multi-node coordination and distributed system testing.
- [Products - Network Emulation, Production-Link Control and Traffic Analysis | NetAccura](https://www.netaccura.com/en/products): NetAccura provides network emulation products, testing and reproduction tools, dedicated nanosecond delay controllers for financial production links and traffic analyzers for network operations.
- [Flow Hunter Network Traffic Analyzer - L2-L7 Analysis and PCAP Forensics | NetAccura](https://www.netaccura.com/en/products/traffic-analyser): Flow Hunter supports passive capture, layered L2-L7 traffic analysis, historical investigation, event timelines and PCAP evidence export for network operations.
- [Network Performance Tester and PCAP Replay | NetAccura Traffic Generation](https://www.netaccura.com/en/products/trafficbox): NetAccura Traffic Generation combines network performance testing and PCAP replay for universities, research institutes and device development teams. Use it for experiments, data center and infrastructure acceptance, device performance and protocol identification testing, with reusable configurations and REST API automation.
- [Independently Developed WAN Emulator | ChaosBridge | NetAccura](https://www.netaccura.com/en/products/wan-emulator): NetAccura ChaosBridge covers 1G–400G with 11 link impairments, including delay, loss and jitter, and up to 4096 virtual links. Reproduce complex networks with protocol fault injection, scenario replay, RESTful API automation and custom development support.
- [Impaired-Network Emulator | App, Media and Game Testing | NetAccura](https://www.netaccura.com/en/products/weak-network-emulator): NetAccura WE-101 emulates impaired networks for apps, real-time media and games. Apply delay, loss, rate limits and outages to real traffic to validate user experience, reconnection, recovery and version regression.
- [Product Selection Guide - Network Emulation, Production-Link Control and Traffic Analysis | NetAccura](https://www.netaccura.com/en/resources/product-selector): First identify whether you need a network emulation lab, financial production-link delay control or network traffic analysis. Then select products by link, node, port and business requirements.
- [WAN Emulator RESTful API Examples and Python Scripts | ChaosBridge | NetAccura](https://www.netaccura.com/en/resources/wan-emulator/api-examples): Use standard HTTP and JSON to discover engines, read virtual links and configure fixed delay. Download ChaosBridge API examples that use only the Python standard library.
- [WAN Emulator Quick-Start Guide | ChaosBridge | NetAccura](https://www.netaccura.com/en/resources/wan-emulator/quick-start): Run your first NetAccura ChaosBridge test, from connecting equipment and configuring bidirectional links and filters to fixed-delay testing and result validation.
- [Link Quality Monitoring and SLA Baselines | NetAccura](https://www.netaccura.com/en/solutions/quality-assurance): Use BestPerf for RTT, directional loss, jitter, micro-outage and TCP goodput measurements, and Flow Hunter for live monitoring, session analysis, retrospe…
- [Dedicated-Link Bandwidth Monitoring | NetAccura](https://www.netaccura.com/en/solutions/dedicated-line-bandwidth-monitoring): Passively monitor ingress/egress utilization, five-minute peaks, busy-hour 95th percentile, top applications, QoS queues and bursts at CE/PE handoffs, clo…
- [Dedicated-Link Quality Monitoring | NetAccura](https://www.netaccura.com/en/solutions/dedicated-line-quality-monitoring): Use BestPerf for continuous RTT, directional loss, jitter, micro-outage, TCP goodput and baseline measurements. Combine Flow Hunter session, retransmissio…
- [Field Impairment Reproduction and Regression Validation | NetAccura](https://www.netaccura.com/en/solutions/field-replay-validation): Capture field quality profiles with BestPerf, then reproduce delay, loss, jitter, micro-outages and bandwidth reductions with ChaosBridge to bring custome…
- [Field Traffic Analysis and PCAP Forensics | NetAccura](https://www.netaccura.com/en/solutions/traffic-forensics): Use Flow Hunter on mirrored ports or TAPs for layered L2-L7 analysis, session investigation, protocol-stage diagnosis and PCAP evidence export.
- [Network Device Performance and Capacity Testing | NetAccura](https://www.netaccura.com/en/solutions/performance-capacity): Generate L2-L3, IMIX, burst and concurrent multi-port traffic. Combine ChaosBridge and BestPerf to validate switches, routers, firewalls, load balancers a…
- [Broadband Access and Service Delivery Acceptance | NetAccura](https://www.netaccura.com/en/solutions/broadband-access-service-validation): Combine NetAccura Traffic Generation, ChaosBridge, BestPerf and Flow Hunter for operators, ISPs, cable broadband and enterprise access. Validate DOCSIS, P…
- [SD-WAN Selection and Deployment Acceptance | NetAccura](https://www.netaccura.com/en/solutions/sd-wan-product-validation): Combine ChaosBridge, NetAccura Traffic Generation, BestPerf and Flow Hunter to validate SD-WAN gateways, controllers, CPE, SASE and branches across MPLS, …
- [Cloud Migration and Hybrid Cloud Application Acceptance | NetAccura](https://www.netaccura.com/en/solutions/cloud-migration-performance-validation): Combine ChaosBridge, NetAccura Traffic Generation, BestPerf and Flow Hunter for data center migration, hybrid/multicloud, VPC/VNet, dedicated links, VPN, …
- [PCAP Replay and Issue Reproduction | NetAccura](https://www.netaccura.com/en/solutions/pcap-replay-validation): Retain field PCAP evidence with Flow Hunter, then replay at configurable rates with IPv4/port rewriting, multiplication and multiple samples. Support R&D,…
- [Security Device Validation and Exercise Traffic | NetAccura](https://www.netaccura.com/en/solutions/security-validation): Combine NetAccura Traffic Generation, Flow Hunter and ChaosBridge to generate background traffic, replay attack PCAPs, observe detection paths and retain …
- [5G Protocol Packet Impairment and Robustness Testing | NetAccura](https://www.netaccura.com/en/solutions/5g-protocol-robustness): Use ChaosBridge for selective NAS, SIP and GTP loss, delay, reordering and bursts. Combine Flow Hunter, Traffic Generation and BestPerf to validate 5G rob…
- [Financial Production-Link Delay Control | NetAccura](https://www.netaccura.com/en/solutions/low-latency-trading): Delay Controller independently serves trading access, market data, colocation and critical circuits with stable, precise deterministic hardware delay for …
- [Real-Time Media Quality and Impairment Testing | NetAccura](https://www.netaccura.com/en/solutions/real-time-audio-video-testing): For conferencing, online classes, telemedicine, interactive streaming, dispatch and RTC/WebRTC, combine ChaosBridge, BestPerf, Flow Hunter and Traffic Gen…
- [Video Streaming and VoIP Quality Testing | NetAccura](https://www.netaccura.com/en/solutions/video-streaming-voip-quality): For streaming, live/VOD, IPTV/OTT, CDN, enterprise VoIP and carrier services, combine ChaosBridge, Traffic Generation, BestPerf and Flow Hunter to assess …
- [Satellite Link Emulation and QoS Validation | NetAccura](https://www.netaccura.com/en/solutions/satellite-link-test): Use ChaosBridge for high delay, dynamic jitter, burst loss, bandwidth reductions and handovers, with BestPerf and Flow Hunter to validate satellite servic…
- [End-to-End Satellite Application Performance Testing | NetAccura](https://www.netaccura.com/en/solutions/satellite-application-performance): Combine ChaosBridge, Traffic Generation, BestPerf and Flow Hunter for satellite internet, commercial broadband, government SATCOM, maritime/aviation, emer…
- [RDMA/RoCE Lossless Network R&D Validation | NetAccura](https://www.netaccura.com/en/solutions/rdma-roce-validation): For GPU clusters, HPC, storage, high-performance NICs and switches, combine emulation, generation, measurement and analysis to validate RoCEv2, PFC/ECN, m…
- [Pre-Release Automated Impairment Regression | NetAccura](https://www.netaccura.com/en/solutions/ci-weaknet-regression): Integrate ChaosBridge scenarios, BestPerf quality gates, Traffic Generation PCAPs and Flow Hunter evidence into CI/CD to reduce production network risks.
- [Cloud-Edge-Branch Link Checks and Fault Isolation | NetAccura](https://www.netaccura.com/en/solutions/branch-cloud-monitoring): Continuously measure headquarters/branch, cloud/edge and data center/cloud links with BestPerf. Use Flow Hunter to isolate slow access, retransmissions, D…
- [Campus Network Checks and Active/Passive Analysis | NetAccura](https://www.netaccura.com/en/solutions/campus-network-inspection): Use BestPerf and Flow Hunter across enterprise, industrial, school and office campuses to investigate Wi-Fi, exits, core switches, DNS, application access…
- [Military Campus Network Emulation and Exercise Acceptance | NetAccura](https://www.netaccura.com/en/solutions/camp-network-simulation): For construction, upgrades, selection, pre-deployment exercises and emergency assurance, combine ChaosBridge, Traffic Generation, BestPerf and Flow Hunter…
- [Mission-Critical Communications and DDIL Resilience Validation | NetAccura](https://www.netaccura.com/en/solutions/mission-critical-communications-resilience): Combine ChaosBridge, Traffic Generation, BestPerf and Flow Hunter for government/private networks, emergency communications and integration. Validate DDIL…
- [Mining Network Quality Monitoring | NetAccura](https://www.netaccura.com/en/solutions/mining-network-quality): Use BestPerf and Flow Hunter for continuous quality, session and PCAP monitoring across smart mines, underground 5G, industrial rings, video, personnel tr…
- [Mining Monitoring and Information System Robustness Testing | NetAccura](https://www.netaccura.com/en/solutions/mining-system-robustness): Use ChaosBridge, BestPerf and Flow Hunter to test impairment robustness and investigate mining monitoring, industrial video, tracking, remote control, dis…
- [Financial Network Emulation, Production Links and Operations | NetAccura](https://www.netaccura.com/en/solutions/finance): For banking, securities, insurance and payments: disaster-recovery/impairment labs, production trading delay control, circuit measurement and passive anal…
- [Operator / ISP Network Testing Solutions | NetAccura](https://www.netaccura.com/en/solutions/telecom): Combine Traffic Generation, ChaosBridge, BestPerf and Flow Hunter for qualification, SLA checks, 5G transport, application traffic analysis and PCAP repla…
- [Internet Company Network Testing | NetAccura](https://www.netaccura.com/en/solutions/internet): Use ChaosBridge, BestPerf and Flow Hunter for internet, SaaS, media and mobile apps: global impairment testing, release regression, slow-request diagnosis…
- [Government, Enterprise and Public Security Forensics | NetAccura](https://www.netaccura.com/en/solutions/government): Combine Traffic Generation, Flow Hunter and ChaosBridge for security exercises, appliance validation, traffic audits and evidence across government, enter…
- [Education and Research Network Labs | NetAccura](https://www.netaccura.com/en/solutions/education): Build protocol, impairment, performance, PCAP and analysis labs using ChaosBridge, Traffic Generation, BestPerf and Flow Hunter for universities and resea…
- [Smart Manufacturing and Industrial Network Testing | NetAccura](https://www.netaccura.com/en/solutions/manufacturing): Use Traffic Generation, ChaosBridge, BestPerf and Flow Hunter to validate industrial Ethernet, TSN, robotics, OT security and production-line reliability.
- [Satellite and Integrated Space-Ground Network Emulation | NetAccura](https://www.netaccura.com/en/solutions/satellite-communications): Use WAN emulators and measurement/analysis tools for GEO, MEO, LEO, satellite internet, integrated space-ground and emergency communications, covering dyn…
- [Telemedicine Network Assurance | NetAccura](https://www.netaccura.com/en/solutions/telemedicine): Use BestPerf, ChaosBridge and Flow Hunter to validate media, imaging and medical system connectivity for consultations, imaging transfers, surgical teachi…
- [Robotics / Embodied AI Network Testing | NetAccura](https://www.netaccura.com/en/solutions/robotics): Build distributed emulation for AMR/AGV, inspection and teleoperated robots and embodied AI. Combine WAN emulators, BestPerf and Flow Hunter to validate c…
- [AI Computing Center Network Testing | NetAccura](https://www.netaccura.com/en/solutions/ai-datacenter): Use Traffic Generation, BestPerf and Flow Hunter for AI centers, GPU clusters, HPC and storage to validate RDMA/RoCE, microbursts, PFC/ECN and east-west t…
- [Network Emulation and Production Network Solutions | NetAccura](https://www.netaccura.com/en/solutions): NetAccura provides labs for 2G, 3G, 4G, 5G, satellite and wired network emulation, plus independent financial production-link delay control and network operations analysis solutions.
- [Cannot Open the Management Page | WAN Emulator Troubleshooting Guide | NetAccura](https://www.netaccura.com/en/support/guides/management-connection): For problems opening the WAN emulator Web interface, first check management connectivity, then the address and access path.
- [Configured Delay Has No Effect | WAN Emulator Troubleshooting Guide | NetAccura](https://www.netaccura.com/en/support/guides/delay-not-applied): Saving parameters does not establish that traffic traverses the intended link. Check in this order before changing parameters repeatedly.
- [No Traffic on the Target Link | WAN Emulator Troubleshooting Guide | NetAccura](https://www.netaccura.com/en/support/guides/traffic-matching): Check from ingress onward to distinguish traffic not reaching the appliance, not matching the link, or not reaching the receiver after processing.
- [API Authentication Fails | WAN Emulator Troubleshooting Guide | NetAccura](https://www.netaccura.com/en/support/guides/api-authentication): Confirm the request reaches the right device, then check authentication and permissions. Handle timeouts, certificate failures and HTTP authentication errors separately.
- [Technical Support | WAN Emulator Resources, Troubleshooting and Automation | NetAccura](https://www.netaccura.com/en/support): Read NetAccura WAN emulator quick starts, download datasheets and Python examples, and resolve connectivity, delay and API authentication issues. Get scenario and automation support through advisers, phone or WeChat.
- [Terms of Service | NetAccura](https://www.netaccura.com/en/terms): Shenzhen NetAccura Technology Co., Ltd. (NetAccura) Terms of Service, covering website use, product licensing and after-sales service.