--- title: TEST4NET Blog — Network & Security Testing Insights | Alexander Zemskov description: Alexander Zemskov leads network and security testing at TEST4NET, an independent, vendor-neutral testing lab in Yerevan, Armenia. With 19+ years in performance and load testing on IXIA, Spirent, Keysight, Xena and Xinertel platforms, he runs NGFW, WAF, IPS, DLP and SASE evaluations for telecom operators, banks and system integrators. image: https://test4net.com/hubfs/og-t4n.png --- [Skip to content](https://test4net.com/blog/author/az#main-content) [![TEST4NET](https://test4net.com/hubfs/test4net-logo-fixed-2.svg)](https://test4net.com/?hsLang=en) - CLOUDLAB - SERVICES - SOLUTIONS - VENDORS - RESOURCES - COMPANY - [English](https://test4net.com/blog/author/az) - [Русский](https://test4net.com/ru/blog/author/az) - [Հայերեն](https://test4net.com/hy/blog/author/az) [Login](https://lab.test4net.com) [Support](https://test4net.com/support?hsLang=en) - [English](https://test4net.com/blog/author/az) - [Русский](https://test4net.com/ru/blog/author/az) - [Հայերեն](https://test4net.com/hy/blog/author/az) How It Works Remote access to a live test lab: pick a scenario, run it, get the report Equipment & Capabilities Traffic generators, emulators and DUT racks available in the lab Access Plans Hourly sessions, subscriptions and dedicated racks [Log in to CloudLAB POPULAR Your sessions, reservations and reports](https://lab.test4net.com) [Open the CloudLAB portal](https://lab.test4net.com) Network Test & Validation Load & Performance Testing Functional Testing Conformance Testing Interoperability Testing Security & Resilience Testing All testing services Automation & Expertise Test Automation & CI/CD Test Plan & Methodology Design Training Programs Lab & Equipment Lab Rental Hosted DUT Testing Equipment Repair Not sure where to start? 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[Request a test plan](https://test4net.com/contacts?hsLang=en) By Technology By Industry By Task Routing & Switching Firewalls & NGFW SD-WAN & WAN Cloud & NFV 5G & Mobile Core Wi-Fi Storage & Infrastructure AI / Switching Fabric (RoCEv2) All technologies Telecom Operators Network & Security Vendors Banks & Financial Services System Integrators Enterprise IT Teams Managed Service Providers Media, Broadcast & Streaming Government & Public Sector All industries Pre-deployment Validation Vendor Selection Cloud Migration Readiness AI/GPU Cluster & RoCEv2 Readiness New Technology Rollout Troubleshooting & Benchmarking Disaster Recovery & Failover Testing SLA Validation & Vendor Accountability All tasks Testing Tools & Lab Ixia / Keysight POPULAR Emblasoft NEW Apposite Technologies T-Plan Cubro Candela Technologies Netitest How we integrate the tools IT Infrastructure HPE Vinchin Yeastar Become a partner Read Technologies / Protocols Methodologies [Blog Case studies, test insights and lab notes](https://test4net.com/blog) [Industry News What is changing in network testing and infrastructure](https://test4net.com/news?hsLang=en) FAQ How the lab, sessions and reports work BGP Route exchange, policy and convergence OSPF & IS-IS IGP adjacency, flooding and SPF timing MPLS & Segment Routing LDP, RSVP-TE and SR-MPLS label paths EVPN / VXLAN Overlay fabrics, MAC/IP routes, multi-homing IPsec & IKEv2 Tunnel setup, rekeying and throughput TLS / HTTPS Handshakes, cipher suites and inspection RoCEv2 Lossless Ethernet, PFC and ECN for AI fabrics Wi-Fi 6 / 6E / 7 802.11ax/be, OFDMA, MLO and roaming All protocols [RFC 2544 Throughput, latency, frame loss and back-to-back](https://test4net.com/methodologies/rfc-2544?hsLang=en) RFC 2889 LAN switch benchmarking: forwarding, MAC learning, congestion [RFC 9411 / RFC 3511 Firewall and NGFW performance benchmarking](https://test4net.com/methodologies/rfc-9411-rfc-3511?hsLang=en) RFC 6349 TCP throughput and buffer delay testing RFC 5180 IPv6 benchmarking methodology ITU-T Y.1564 Ethernet service activation: CIR, EIR, KPIs per service ITU-T Y.1731 Ethernet OAM: delay, jitter, loss and SLA monitoring TR-398 Wi-Fi in-premises performance test plan All methodologies From the blog [![Wi-Fi testing](https://test4net.com/hubfs/blog-covers/menu/menu-wifi-640.webp) Wi-Fi Wi-Fi Testing for High-Performance Use Cases: Why a Walk Test Is Not a Test](https://test4net.com/blog/wi-fi-testing-for-high-performance-use-cases-why-a-walk-test-is-not-a-test) [![Security validation](https://test4net.com/hubfs/blog-covers/menu/menu-security-640.webp) Security One Test Is Not Enough: Why Security Infrastructure Needs Continuous Validation](https://test4net.com/blog/security-platform-continuous-validation-updates) [![Security product testing](https://test4net.com/hubfs/blog-covers/menu/menu-lab-640.webp) Methodology How to Run a Security Product Test You Can Actually Trust](https://test4net.com/blog/how-to-run-a-security-product-test-you-can-actually-trust) [About Us Independent lab in Armenia, team and history](https://test4net.com/about?hsLang=en) [Why TEST4NET What you get that vendor slides never show](https://test4net.com/why-test4net?hsLang=en) Our Lab & Certifications Equipment, methods and the standards we test against Partner Program Resell, integrate and co-test with us [Contacts Talk to an engineer, not a sales bot](https://test4net.com/contacts?hsLang=en) [Support portal](https://test4net.com/support?hsLang=en) - CLOUDLAB How It Works Equipment & Capabilities Access Plans [Log in to CloudLAB POPULAR](https://lab.test4net.com) - SERVICES Network Test & Validation Load & Performance Testing Functional Testing Conformance Testing Interoperability Testing Security & Resilience Testing All testing services Automation & Expertise Test Automation & CI/CD Test Plan & Methodology Design Training Programs Lab & Equipment Lab Rental Hosted DUT Testing Equipment Repair [Not sure where to start? Get a test plan for your setup](https://test4net.com/contacts?hsLang=en) - SOLUTIONS By Technology Routing & Switching Firewalls & NGFW SD-WAN & WAN Cloud & NFV 5G & Mobile Core Wi-Fi Storage & Infrastructure AI / Switching Fabric (RoCEv2) All technologies By Industry Telecom Operators Network & Security Vendors Banks & Financial Services System Integrators Enterprise IT Teams Managed Service Providers Media, Broadcast & Streaming Government & Public Sector All industries By Task Pre-deployment Validation Vendor Selection Cloud Migration Readiness AI/GPU Cluster & RoCEv2 Readiness New Technology Rollout Troubleshooting & Benchmarking Disaster Recovery & Failover Testing SLA Validation & Vendor Accountability All tasks - VENDORS Testing Tools & Lab Ixia / Keysight POPULAR Emblasoft NEW Apposite Technologies T-Plan Cubro Candela Technologies Netitest How we integrate the tools IT Infrastructure HPE Vinchin Yeastar Become a partner - RESOURCES Read [Blog](https://test4net.com/blog) [Industry News](https://test4net.com/news?hsLang=en) FAQ Technologies / Protocols BGP OSPF & IS-IS MPLS & Segment Routing EVPN / VXLAN IPsec & IKEv2 TLS / HTTPS RoCEv2 Wi-Fi 6 / 6E / 7 All protocols Methodologies [RFC 2544](https://test4net.com/methodologies/rfc-2544?hsLang=en) RFC 2889 [RFC 9411 / RFC 3511](https://test4net.com/methodologies/rfc-9411-rfc-3511?hsLang=en) RFC 6349 RFC 5180 ITU-T Y.1564 ITU-T Y.1731 TR-398 All methodologies From the blog [Wi-Fi Testing for High-Performance Use Cases: Why a Walk Test Is Not a Test Wi-Fi](https://test4net.com/blog/wi-fi-testing-for-high-performance-use-cases-why-a-walk-test-is-not-a-test) [One Test Is Not Enough: Why Security Infrastructure Needs Continuous Validation Security](https://test4net.com/blog/security-platform-continuous-validation-updates) [How to Run a Security Product Test You Can Actually Trust Methodology](https://test4net.com/blog/how-to-run-a-security-product-test-you-can-actually-trust) - COMPANY [About Us](https://test4net.com/about?hsLang=en) [Why TEST4NET](https://test4net.com/why-test4net?hsLang=en) Our Lab & Certifications Partner Program [Contacts](https://test4net.com/contacts?hsLang=en) [Login](https://lab.test4net.com) [Support](https://test4net.com/support?hsLang=en) Posts by # Alexander Zemskov Alexander Zemskov leads network and security testing at TEST4NET, an independent, vendor-neutral testing lab in Yerevan, Armenia. With 19+ years in performance and load testing on IXIA, Spirent, Keysight, Xena and Xinertel platforms, he runs NGFW, WAF, IPS, DLP and SASE evaluations for telecom operators, banks and system integrators. [All topics](https://test4net.com/blog) [![Wi-Fi testbed diagram: controller, access point under test on a turntable in an RF chamber, emulated client chamber and second AP chamber connected through programmable attenuators](https://test4net.com/hubfs/blog-covers/wifi-testing-cover-2.png)](https://test4net.com/blog/wi-fi-testing-for-high-performance-use-cases-why-a-walk-test-is-not-a-test) ### [Wi-Fi Testing for High-Performance Use Cases: Why a Walk Test Is Not a Test](https://test4net.com/blog/wi-fi-testing-for-high-performance-use-cases-why-a-walk-test-is-not-a-test) Wi-Fi used to be the network you tolerated. Now it carries the video call with the customer, the telehealth session, the factory floor and the classroom. This post is abo… ![](https://test4net.com/hubfs/IMG_0070.jpg) Alexander Zemskov · Sep 8, 2026 · 15 min read [![](https://test4net.com/hubfs/AI-Generated%20Media/Images/Security%20Appliance%20Update%20Timeline%20Visualization.png)](https://test4net.com/blog/security-platform-continuous-validation-updates) ### [One Test Is Not Enough: Why Security Infrastructure Needs Continuous Validation](https://test4net.com/blog/security-platform-continuous-validation-updates) This is the sixth post in a series on evaluating network security products. Part 1: the datasheet gap. Part 2: NGFW traps. Part 3: WAF, IPS, DLP. Part 4: SASE. Part 5: me… ![](https://test4net.com/hubfs/IMG_0070.jpg) Alexander Zemskov · Jul 10, 2026 · 10 min read [![](https://test4net.com/hubfs/AI-Generated%20Media/Images/Network%20Testing%20Lab%20with%20Glowing%20Equipment%20and%20Waveforms.png)](https://test4net.com/blog/how-to-run-a-security-product-test-you-can-actually-trust) ### [How to Run a Security Product Test You Can Actually Trust](https://test4net.com/blog/how-to-run-a-security-product-test-you-can-actually-trust) This is the final part of a six-part series on evaluating network security products. Part 1: the datasheet gap. Part 2: NGFW traps. Part 3: WAF, IPS, DLP. Part 4: SASE. T… ![](https://test4net.com/hubfs/IMG_0070.jpg) Alexander Zemskov · Jul 10, 2026 · 8 min read [![](https://test4net.com/hubfs/AI-Generated%20Media/Images/Glowing%20Nodes%20on%20Dark%20Globe%20with%20Congested%20Point%20Highlighted.png)](https://test4net.com/blog/sase-benchmark-evaluation-methodology) ### [SASE: Why Vendor Cloud-Security Benchmarks Miss Your Real Deployment](https://test4net.com/blog/sase-benchmark-evaluation-methodology) This is part four of a six-part series on evaluating network security products. Part 1 covered the structural datasheet gap. Part 2 covered NGFW testing traps. Part 3 cov… ![](https://test4net.com/hubfs/IMG_0070.jpg) Alexander Zemskov · Jul 10, 2026 · 6 min read [![](https://test4net.com/hubfs/AI-Generated%20Media/Images/Layered%20Document%20Inspection%20with%20Scanning%20Lines%20and%20Amber%20Highlights.png)](https://test4net.com/blog/waf-ips-dlp-content-inspection-testing) ### [WAF, IPS, and DLP: Why Content Inspection Testing Is Harder Than It Looks](https://test4net.com/blog/waf-ips-dlp-content-inspection-testing) This is part three of a six-part series on evaluating network security products. Part 1 covered the structural datasheet gap. Part 2 covered NGFW-specific testing traps. … ![](https://test4net.com/hubfs/IMG_0070.jpg) Alexander Zemskov · Jul 10, 2026 · 7 min read [![](https://test4net.com/hubfs/AI-Generated%20Media/Images/Hardware%20Firewall%20with%20Shadow%20Overlay%20and%20Abstract%20Flow%20Lines.png)](https://test4net.com/blog/ngfw-testing-fast-path-appmix-pcap) ### [NGFW Testing: Fast Paths, Fake AppMix, and PCAP Replay Traps](https://test4net.com/blog/ngfw-testing-fast-path-appmix-pcap) This is part two of a six-part series on evaluating network security products. Part 1 covered the structural datasheet gap that applies across the entire security industr… ![](https://test4net.com/hubfs/IMG_0070.jpg) Alexander Zemskov · Jul 10, 2026 · 7 min read [![](https://test4net.com/hubfs/AI-Generated%20Media/Images/Shattered%20Datasheet%20Reveal%20Dim%20Signal%20in%20Cold%20Blue%20Palette.png)](https://test4net.com/blog/the-security-datasheet-lie-and-why-it-is-structural) ### [The Security Datasheet Lie — And Why It Is Structural](https://test4net.com/blog/the-security-datasheet-lie-and-why-it-is-structural) Every network security vendor publishes performance numbers that look compelling in a slide deck. The demo goes smoothly. The PoC delivers great results. Then the hardwar… ![](https://test4net.com/hubfs/IMG_0070.jpg) Alexander Zemskov · Jul 10, 2026 · 5 min read [![](https://test4net.com/hubfs/AI-Generated%20Media/Images/Network%20Operations%20Center%20with%20Data%20Displays%20and%20IT%20Professionals.png)](https://test4net.com/blog/network-device-testing-business-requirement) ### [Why Network and Device Testing Is a Business Requirement](https://test4net.com/blog/network-device-testing-business-requirement) Network and security infrastructure testing is often treated as a technical exercise near the end of deployment. In reality, it is a business requirement. ![](https://test4net.com/hubfs/IMG_0070.jpg) Alexander Zemskov · Jul 10, 2026 · 4 min read [![](https://test4net.com/hubfs/AI-Generated%20Media/Images/Modern%20Office%20Collaboration%20with%20Network%20Analytics%20and%20Tech%20Displays.png)](https://test4net.com/blog/datasheet) ### [Why Vendor Benchmarks Are Not Enough for Infrastructure Decisions](https://test4net.com/blog/datasheet) Your infrastructure plan has a shelf life of 18 months. AI, 5G, SD-WAN and cloud-native security — every cycle arrives faster than the last. ![](https://test4net.com/hubfs/IMG_0070.jpg) Alexander Zemskov · Jul 10, 2026 · 3 min read Newsletter [![TEST4NET LLC](https://test4net.com/hubfs/test4net-logo-fixed.svg)](https://test4net.com?hsLang=en) Independent testing and validation for telecom, information security and cloud infrastructure — real insights, not assumptions. 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