QYTANG EVOLUTION
Explore complete public sessions by year and follow how technology evolves.
Starting with line charts, this episode covers time series, utilization data, annotations, multiple lines, subplots, bar charts, pie charts, and web …
A practical workflow for reading, cleaning, filtering, aggregating, and exporting tabular data with Pandas, establishing a reusable foundation for ne…
This episode introduces VyOS installation and core interface and routing configuration in a virtual lab, explaining its role in automation and cloud …
This episode explores Merlin firmware installation, enhanced services, plugins, and practical home-network use cases, including compatibility and ope…
A guided tour of Cisco DevNet learning labs, sandboxes, documentation, Python, APIs, and SDN, with a practical path from study to hands-on validation…
This episode covers Burp Suite proxying, interception, replay, scanning, and HTTP request analysis, emphasizing evidence-driven web security testing.…
This episode covers NumPy arrays, vectorized computation, indexing, slicing, and statistics for efficient scientific and network-data processing. …
This episode demonstrates AppScan crawling, scan policies, vulnerability identification, reporting, and manual validation to reduce false positives. …
This episode uses Ansible inventory, YAML, playbooks, and network modules for repeatable state collection, configuration deployment, and validation. …
A systematic guide to capture interfaces, capture and display filters, protocol fields, stream following, and packet-based troubleshooting. Total …
This episode explains DNS-layer security, domain categorization, threat blocking, roaming clients, policy design, deployment, and validation with Cis…
This episode integrates Cisco devices with Zabbix using SNMP, templates, OIDs, items, triggers, graphs, alerts, and data validation. Total recordi…
This episode walks through Cisco ISE 2.3 BYOD onboarding, certificates, identity, authorization, self-service registration, and policy validation. …
This episode explains Bitcoin through hashing, blocks, proof of work, distributed consensus, wallets, transactions, and security boundaries. Total…
This episode interprets 2018 security-report evidence on attack patterns, threat evolution, defensive priorities, enterprise risk, and security opera…
This episode explains Cisco Smart Install operation and exposure, then demonstrates detection, mitigation, access restriction, and validation. Tot…
This episode covers practical vSphere operations across virtual machines, networking, storage, and troubleshooting, with attention to dependencies an…
This episode builds a Python crawler covering requests, HTML parsing, extraction, persistence, headers, encoding, exceptions, and basic anti-bot cons…
This episode uses the vSphere 6.5 REST API for authentication, resource discovery, VM creation, configuration updates, identifiers, requests, and res…
This episode introduces MongoDB documents, collections, queries, installation, and Python CRUD workflows for operations data. Total recording dura…
This episode covers PyCharm installation, projects, interpreters, plugins, editing, version control, and local development with remote debugging. …
This episode builds a Django and Bootstrap environment covering project structure, URLs, views, templates, static files, and end-to-end page renderin…
This episode covers Cisco Mobility Express architecture, AP images, initialization, WLAN configuration, client onboarding, and operational checks. …
This episode automates Cisco Nexus with NX-API, Python SDKs, and network modules for VLANs, static routes, configuration, and repeatable workflows. …
A four-part course on IOS XE IKEv2 remote access and FlexVPN, covering EAP, authentication, proposals, policies, profiles, AnyConnect access, and val…
This episode explains Bonjour and mDNS service discovery and Cisco WLC Bonjour Gateway configuration and validation across VLANs with Apple clients. …
This episode uses YANG, NETCONF sessions, XML RPCs, and IOS XE for state retrieval, configuration reads and changes, plus model exploration. Total…
This episode covers RESTCONF resource paths, HTTP methods, authentication, JSON/XML payloads, IOS XE queries and updates, and comparison with NETCONF…
This episode builds an ELK pipeline for collection, parsing, indexing, Query DSL, dashboards, and transforming raw events into observable data. To…
This episode uses Python for IPv6 addresses, prefixes, normalization, network calculations, device workflows, and validation. Total recording dura…
This episode covers sockets, client-server communication, protocol data, exceptions, timeouts, reliability, and their use in network operations scrip…
This episode covers Django template inheritance, variables, tags, filters, static assets, page organization, and data-driven rendering. Total reco…
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 HTTP fundamentals with Requests, Fiddler, Burp Suite, and Beautiful Soup for debugging, APIs, proxying, and parsing. Total r…
This episode explains NetFlow records, exporters, templates, collectors, and Python-based ingestion and parsing for programmable traffic analytics. …
A long-form integrated security course connecting identity, endpoints, networks, content, threat protection, and coordinated control points. Total…
Volume two deepens integrated security architecture, policies, product capabilities, deployment validation, and troubleshooting across complex scenar…
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 uses Selenium IDE for recorded browser workflows, locators, assertions, waits, replay, and maintainable no-code web automation. Total…
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…
A twelve-part security reading series covering WSA web security, ESA email security, Umbrella DNS security, and AMP advanced malware protection from …
This episode covers Cisco FlexConnect branch architecture, control and data paths, local switching, authentication, site configuration, and troublesh…
