QYTANG EVOLUTION
Explore complete public sessions by year and follow how technology evolves.
This episode explores stable loopback identities in routing, VPNs, NAT, self-traffic monitoring, and virtual-machine bridging, using practical design…
This episode automates Cisco FMC through REST authentication, object and policy queries, pagination, JSON processing, and API Explorer workflows. …
This episode introduces VyOS installation and core interface and routing configuration in a virtual lab, explaining its role in automation and cloud …
This two-part episode interprets Cisco's Global Networking Trends report across cloud, security, observability, automation, and digital experience, c…
This episode explains Secure Access Service Edge through SD-WAN, secure web gateways, CASB, ZTNA, and firewall as a service. It maps identity, device…
This episode runs edge applications on Cisco IOx and manages their lifecycle with Fog Director. It covers packaging, resource and network mappings, i…
This episode requests and deploys a free SSL certificate, covering domain validation, private keys, chains of trust, HTTPS configuration, redirects, …
This episode explores Merlin firmware installation, enhanced services, plugins, and practical home-network use cases, including compatibility and ope…
This episode compares route-based VPN implementations on Cisco FTD and ASA using Static Virtual Tunnel Interfaces. It covers IKE and IPsec parameters…
This episode compares local SPAN, RSPAN, and GRE-based ERSPAN, covering sources, destinations, direction, encapsulation, packet validation, and desig…
This four-part episode covers RADIUS and AAA fundamentals, AVPs and authenticators, NAS integration, authentication database choices, authorization r…
This episode installs and initializes SONiC on an NVIDIA switch. It covers device and image preparation, the ONIE installation flow, boot validation,…
This episode explains Opportunistic Wireless Encryption in Wi-Fi 6, providing per-user encryption on open networks without a shared password. Theory …
This episode covers Burp Suite proxying, interception, replay, scanning, and HTTP request analysis, emphasizing evidence-driven web security testing.…
This episode automates Aruba through REST API authentication, sessions and tokens, resource URLs, JSON requests and responses, and Python-based confi…
This three-part episode covers Cisco ISE 3.x cloud-first, visibility, and API features; infrastructure as code with Terraform; and Azure AD identity …
This episode configures SONiC on NVIDIA switches through the CLI, covering interfaces, VLANs, Layer 3 adjacencies, BGP EVPN, VXLAN objects, and valid…
This episode deploys a containerized browser proxy in Cisco IOS XE App Hosting. It covers Guest Shell, application packages, virtual ports, networkin…
This episode goes beyond basic ACL syntax to examine standard, extended, reflexive, dynamic, and time-based controls across routed control and data p…
This episode explains Cisco pxGrid session, identity, device, and security-context sharing through node registration, certificates, topic subscriptio…
This episode interprets Cisco's 2021 Global Networking Trends report, examining network as a service, automation, observability, security, and busine…
This episode demonstrates AppScan crawling, scan policies, vulnerability identification, reporting, and manual validation to reduce false positives. …
This three-part episode covers Aruba Instant AP clustering, master/member behavior, Mesh backhaul, and physical-controller upgrades and downgrades, w…
This episode explains software load balancers through scalability, cost, automation, and cloud-native delivery. Layer 4 and Layer 7 forwarding, healt…
This episode initializes Cisco Firepower Device Manager and configures interfaces, routing, objects, access control, NAT, deployment, and traffic val…
A systematic guide to capture interfaces, capture and display filters, protocol fields, stream following, and packet-based troubleshooting. Total …
This episode builds a working FreeRADIUS service with client definitions, user and authentication databases, policies, debug logs, and network-device…
This episode demonstrates Yigeyun SASE from identity onboarding, clients, internal DNS, and application publishing to watermarking, acceleration, IT …
This two-part episode explains Linux Virtual Server and compares NAT and Direct Routing across packet paths, address translation, and return traffic.…
This episode explains WPA3-Personal, SAE, protected management frames, and transition mode, comparing them with WPA2 authentication and key exchange.…
This episode explains DNS-layer security, domain categorization, threat blocking, roaming clients, policy design, deployment, and validation with Cis…
This episode configures Azure AD Connect for directory synchronization and then federates Cisco AnyConnect VPN with Azure SAML. ASA/FTD settings, ent…
This episode imports Huawei images into EVE-NG, builds a lab topology, and wraps device connectivity, commands, and configuration in Python automatio…
This episode interprets Cisco security-report findings on privacy, threats, attacks, and defense trends and applies them to enterprise architecture a…
This episode deploys VMware NSX Advanced Load Balancer (Avi) on AWS, beginning with image import, IAM roles, and networking before configuring contro…
This episode uses Cisco ISE APIs and Syslog for identities, endpoints, policies, events, authentication, parsing, and automated security integration.…
This episode walks through Cisco ISE 2.3 BYOD onboarding, certificates, identity, authorization, self-service registration, and policy validation. …
This episode explains Cisco Umbrella DNS-layer security, cloud proxying, and threat intelligence. It covers policies, identities, roaming clients, lo…
This episode compares ZTNA and traditional VPNs through access models, trust boundaries, and attack surfaces. Identity, context, policies, and trust …
This episode uses Cisco YANG Suite to explore YANG models, build NETCONF and RESTCONF requests, and validate device responses. It covers models, path…
This episode interprets 2018 security-report evidence on attack patterns, threat evolution, defensive priorities, enterprise risk, and security opera…
This episode starts with traditional VPN limitations in cloud and SaaS environments, then compares SASE and SSE architectures and service boundaries.…
This episode runs Python in the IOS XE Guest Shell, uses CLI modules, and triggers event-driven automation with EEM, covering environment, permission…
This episode explains Cisco Smart Install operation and exposure, then demonstrates detection, mitigation, access restriction, and validation. Tot…
This episode explains Check Point Maestro hyperscale architecture, including orchestrators, security groups, uplinks and downlinks, active-active ope…
This episode integrates Cisco Firepower Management Center, ISE Passive Identity Connector, and Active Directory to map users to network sessions. Ide…
This episode introduces Cisco C9800 IOS XE wireless architecture, deployment, initialization, policy tags, AAA, 802.1X WLANs, and client validation. …
This episode explains Tailscale through WireGuard, its control plane, node identity, Tailnets, ACLs, key management, subnet routers, and exit nodes. …
This episode explains how eBPF safely extends Linux without modifying kernel source or traditional modules, covering hooks, kprobes/uprobes, verifica…
This episode introduces Cisco Modeling Labs topology, nodes, images, and lifecycle management, then extends GUI operations with APIs and cmlutils. It…
This episode uses Cisco PSIRT openVuln APIs to query advisories by product, version, date, and severity, covering OAuth, REST requests, JSON parsing,…
This episode builds an evidence-based routing troubleshooting method using ICMP, TCP resets, asymmetric reachability, route lookups, logging, and deb…
This episode compares VMware VeloCloud, Cisco Viptela, Aruba EdgeConnect, and Fortinet SD-WAN across architecture, controllers, onboarding, policy mo…
This episode integrates Cisco AnyConnect VPN with multi-factor authentication, covering RADIUS or SAML, identity sources, policies, login flow, clien…
This episode explains Cisco IBNS 2.0 policy maps, events, classes, service templates, migration from legacy 802.1X, authentication, authorization, an…
This episode compares routed, VLAN, and port ACLs on switches, covering placement, direction, matching, hardware forwarding, and traffic-path validat…
This episode runs Python in the IOS XE Guest Shell and uses Embedded Event Manager to trigger scripts from device events. It covers IOx, the CLI Pyth…
This episode reviews Cisco 2020 trends in automation, AI assurance, multicloud, wireless access, and security roles, connecting them to architecture …
This episode covers Cisco Mobility Express architecture, AP images, initialization, WLAN configuration, client onboarding, and operational checks. …
This episode covers advanced Cisco Syslog configuration including severity, facility, timestamps, source interfaces, structured fields, and remote-se…
This two-part episode traces networking from hardware-centric command-line operations to virtualization, cloud, automation, and software-defined arch…
This episode automates Cisco Nexus with NX-API, Python SDKs, and network modules for VLANs, static routes, configuration, and repeatable workflows. …
This episode introduces Cisco TRex and its DPDK-based user-space packet-processing architecture. It covers topology, interfaces and routes, traffic p…
This episode explains Manufacturer Usage Description files, controller enforcement, communication intent, and access policies for reducing IoT attack…
A four-part course on IOS XE IKEv2 remote access and FlexVPN, covering EAP, authentication, proposals, policies, profiles, AnyConnect access, and val…
This episode implements Cisco zero-touch provisioning with Python. DHCP bootstrap information, script download, asset identification, template render…
This episode introduces SONiC container architecture, switch abstraction, configuration databases, and network services, then installs a virtual envi…
This episode uses ThousandEyes endpoint, enterprise, and cloud agents for HTTP, DNS, and network tests, analyzing hops, latency, loss, dependencies, …
This episode explains Bonjour and mDNS service discovery and Cisco WLC Bonjour Gateway configuration and validation across VLANs with Apple clients. …
This episode explains Cisco NSO through NETCONF, YANG, device models, and service models. A service lab demonstrates repeatable cross-device configur…
This episode uses YANG, NETCONF sessions, XML RPCs, and IOS XE for state retrieval, configuration reads and changes, plus model exploration. Total…
This episode automates Cisco Modeling Labs with PyATS through topology setup, device startup, testbed definitions, connectivity, parsing, bulk config…
This episode explains Cisco Viptela SD-WAN through vManage, vSmart, vBond, and WAN Edge, covering OMP, overlays, policies, routing interactions, cont…
This episode introduces Cisco NSO YANG service models, device management, transactions, FastMap, multi-vendor configuration, service creation, deploy…
This episode covers RESTCONF resource paths, HTTP methods, authentication, JSON/XML payloads, IOS XE queries and updates, and comparison with NETCONF…
This episode introduces OpenConfig's vendor-neutral YANG models and compares native, IETF, and OpenConfig schemas. RESTCONF labs on Cisco IOS XE and …
This episode inserts and scales Cisco virtual firewalls with AWS Gateway Load Balancer. GWLB endpoints, GENEVE encapsulation, route steering, statefu…
This episode interprets Cisco's 2022 Global Networking Trends report, focusing on network as a service, consumption models, cloud management, observa…
This episode implements Identity PSK on Cisco C9800, assigning per-user or per-device keys and policies. It covers WLAN and policy configuration, RAD…
This episode explains Layer-2 MACsec encryption, key agreement, policy, interface configuration, packet and state validation, and its boundary versus…
This episode introduces Cisco DNA Center intent-based networking, inventory and sites, plus REST API authentication and automation through DevNet San…
This episode introduces V2Ray components, inbound and outbound routing, transports, client-server deployment, proxy paths, and connectivity validatio…
This episode covers Mobility Express 8.5 features, deployment, initialization, WLAN operations, upgrades, compatibility, and validation. Total rec…
This episode analyzes NAT, dynamic addressing, port mapping, and VPN traversal with topology-based connection and path validation. Total recording…
This episode explains RADIUS packets, shared secrets, authentication, authorization, accounting, device integration, packet capture, logs, and troubl…
This episode connects PKI certificates, CAs, trust chains, and identity validation to secure DMVPN establishment, lifecycle, IKE/IPsec, and verificat…
This episode covers Cisco macros and Auto Smartports triggers, templates, interface policies, matching conditions, automation benefits, rollback, and…
This episode explains antenna gain, directionality, polarization, beamwidth, types, Cisco product selection, RF coverage design, and deployment outco…
This episode explains FMC FlexConfig objects, policies, deployment, advanced CLI capabilities, change review, and device-side validation. Total re…
This episode automates Cisco ACI through APIC APIs, authentication, the object model, Python queries, tenants, network objects, and DevNet labs. T…
This episode covers Cisco FlexConnect branch architecture, control and data paths, local switching, authentication, site configuration, and troublesh…
