
Trace the history of cellular networking from analogue origins to gsm's global standard and gprs evolution. Examine mobility management, handoffs, roaming, and the shift to ip-based, bearer independent core network.
Explore global standards shaping mobile and telecom networks, from ITU and ETSI to 3GPP, GSM, and SS7, and trace the shift from circuit switching to IP and Ethernet.
Master signaling system number seven SS7 to understand how it enables reliable telecom signaling across circuit and IP networks, using MTP, ISUP, SCPs, and STPs.
GSM extends SS7 with MAP, ISUP, and BSSMAP to connect mobile switching centers, the Home Location Register, and radio networks using IP-based Sigtran signaling.
Examine the classic GSM network subsystem and its interfaces a, e, c, and d, and compare it to the IP based subsystem with MSC server, media gateway, and serving gateway.
Explore how the visitor location register and home location register manage subscriber data, location tracking, service authorization, and roaming in gsm, with imsi and authentication center security.
Discover how the base station subsystem, comprising the base transceiver station and base station controller, handles traffic and signaling between mobile stations and network, in 900 and 1800 MHz bands.
Base transceiver stations bridge mobile devices and GSM networks via the air interface, using transceivers, amplifiers, combiners, duplexers, antennas, sectorization, frequency reuse, and software defined radios.
Describe how the GSM air interface combines frequency division and TDMA to connect a base station with multiple subscribers via 200 kHz carriers, 4.615 ms frames, and 577 μs bursts.
Coordinate radio resources, call setup, and handovers between base transceiver stations and the mobile switching center using channel requests and immediate assignments on a standalone dedicated control channel.
Explore how GPRS and EDGE shift GSM networks from circuit switching to end-to-end packet switching, enabling bursty data, internet access, and IoT applications.
Explore how LTE upgrades mobile networks with OFDM downlink, flexible bandwidths from 1.2 to 20 MHz, MIMO, carrier aggregation, all-ip core, and voice over LTE for seamless handovers.
Explore how the lte network architecture combines a radio access network and core network to reduce latency and cost, featuring enodeB, mme, sgw, pgw, and hss.
Explore how the mobility management entity authenticates users with the HSS, establishes bearers, and enables roaming, handovers, and secure tunneling across the SGW and PDGW in LTE.
Explore LTE's FDD air interface and its OFDM-based downlink, highlighting multipath resistance, spectral efficiency, and scalable subcarrier design that enables high-speed data.
Explore how sc-fdma enables energy-efficient lte uplink by fft-based processing, subcarrier mapping, and ifft to lower papr, preserving multicarrier benefits of ofdm while reducing uplink power.
Explore quadrature amplitude modulation in LTE, showing how OFDM uses the I and Q components to encode data with QPSK to 256-QAM, and 1024-QAM in 5G.
Explore time division LTE (td-lte), a variant of LTE using a single uplink-downlink channel with guard periods and configurable tdd patterns, and examine enodeb scheduling and uplink limitations.
Explore how a mobile device searches for an LTE cell, synchronizes signals, attaches to the network, and activates default bearers, while examining downlink and uplink resource scheduling.
Discover how a radio system uses a transmitter, a carrier signal, and an air medium to convey information through amplitude modulation and demodulation, exemplified by 1560 kHz am radio.
Explore how signals carry information by modulating a carrier wave with an audio signal using amplitude modulation, then demodulate to recover sound on radio receivers.
Discover digital signal processing through sampling and the roles of analog-to-digital and digital-to-analog converters. See how sample rate and aliasing shape digital representations of signals for software defined radio.
Explore software defined radio with rtl-sdr, a low-cost, repurposed digital tv dongle powered by the rtl-2832u chip, turning affordable hardware into a versatile wideband sdr receiver.
Compare RTL-SDR and HackRF by mapping frequency ranges, bandwidths, and 8-bit ADC specs, and highlight when to use RTL-SDR, HackRF, or higher-end SDRs for transmit/receive tasks.
Download and set up SDR Plusplus, open source cloud platform for SDR enthusiasts, on Windows, Linux, or Raspberry Pi. Get nightly builds from sdrplusplus.org to access latest features and devices.
Learn to set up an SDR receiver with SDR Plus+, install drivers, connect devices (HackRF, RTL-SDR), and configure the source, gain, sample rate, and offset tuning for optimal reception.
Explore the SDR++ main screen and master its core controls, including start/stop, per‑VFO volume, frequency selector, and the signal-to-noise meter, plus side-menu customization.
Master SDR++ main menu to configure FFT, waterfall, color maps, and band plans, then tune modulation modes (nfm, vfm, am, dsb, usb/lsb, cw) with filters, snap intervals, and squelch.
Learn how to set up Dragon OS, a Linux-based Ubuntu distribution with SDR tools like GNU Radio Companion, SDR Angel, and Universal Radio Hacker, by downloading the 3.6 gb ISO.
Explore the HackRF Portapak interface for portable field work, learning to navigate frequency controls, DC bias, audio output, screenshots, and mode toggles for FM reception and burst-based signals.
Explore ads-b basics, history, and live reception with HackRF, covering the LNA, VGA, antenna choices, and decoding fields like ICAO, callsign, speed, altitude, and position.
Master the complete cellular communication stack (GSM, LTE, 5G) from theory to hands-on penetration testing. Learn SS7 signaling, network architecture, radio signal analysis, and practical SDR labs using RTL-SDR and HackRF to analyze, intercept, and exploit real-world signals.
This is the definitive, no-fluff course for engineers, ethical hackers, and security professionals who want to move beyond basic Wi-Fi and Bluetooth to master the core protocols that power global mobile communications: GSM, LTE, and 5G.
Most courses only cover the high-level theory. This one integrates deep network knowledge with Software-Defined Radio (SDR) techniques, giving you the practical ability to analyze, intercept, and understand every signal around you. If you want to master the wireless attack surface and build advanced reverse-engineering skills, this course is your roadmap.
What You Will Master: Key Skills & Technologies
GSM & SS7 Mastery: Dive into the architecture of 2G networks, mastering the signaling protocol (SS7) used for key functionalities. Learn how HLR and VLR databases manage mobility and how this legacy protocol can be leveraged for modern attacks.
4G (LTE) Deep Dive: Understand the complexities of the LTE network architecture, the roles of MME, S-GW, and P-GW, and the essential differences between OFDMA and SC-FDMA. This is the foundation for analyzing modern mobile traffic.
Core Radio Signal Analysis: Demystify the physics behind the signals. Master Modulation, Carrier Waves, and the difference between Analog vs. Digital Signals. This technical depth separates a true professional from a casual user.
Practical SDR & Hacking Labs: Get hands-on with real hardware. Learn to configure and use RTL-SDR and the powerful HackRF One (including the Portapack). You will set up your lab environment with SDR++ and immediately begin detecting and analyzing real-world signals, including aircraft tracking (ADS-B).
Why This Course is Essential for Your Career
This training directly addresses the skills needed for high-demand roles in Telecom Security and Mobile Penetration Testing. You will gain deep knowledge of SS7 Vulnerabilities and LTE Penetration Testing techniques, backed by a proven portfolio of HackRF Tutorials and real-world signal analysis. This positions you as an expert ready to tackle the security challenges of 5G Architecture.