TCP/IP Networking Essentials Course in Doha, Qatar

The TCP/IP Networking Essentials course in Doha, Qatar takes a close look at the protocol suite that runs every modern network and the internet itself. Rather than surveying hardware, it concentrates on the protocols: how IP routes packets, how subnetting divides address space, how TCP builds reliable sessions with its three-way handshake, and when applications choose UDP instead. Learners also study ICMP, ARP, DNS, DHCP and HTTP/HTTPS to understand what really happens when a user opens a web page.

Much of the learning happens inside Wireshark. Participants capture and filter live traffic, follow TCP streams, spot retransmissions and read DNS and DHCP exchanges field by field. Subnetting drills with VLSM and CIDR summarization build speed and accuracy, and IPv6 labs cover addressing, SLAAC and neighbor discovery. The course suits people who already know basic networking and want deeper protocol knowledge, and it can run as an in-house program focused on an organization's own traffic patterns.

By the end of this course, participants will be able to:

• Calculate subnets, host ranges and summary routes using VLSM and CIDR

• Explain the structure of IPv4 and IPv6 headers and key fields

• Compare TCP and UDP, including handshakes, windowing and port numbers

• Configure IPv6 addressing and explain SLAAC and neighbor discovery

• Analyze DNS, DHCP and HTTP/HTTPS exchanges in packet captures

• Use Wireshark filters to diagnose latency, retransmissions and resolution failures

This course is aimed at IT professionals with basic networking knowledge who want a deeper, protocol-level understanding of TCP/IP.

• Network and systems support engineers

• System administrators responsible for servers and services

• Cybersecurity staff who review network traffic

• Application support staff troubleshooting connectivity

• IT professionals preparing for further networking certifications

Module 1: The TCP/IP Model and the Internet Layer

• TCP/IP layers mapped against the OSI model

• IPv4 header fields, TTL and fragmentation

• ICMP messages used by ping and traceroute

• ARP requests, replies and the ARP cache

Module 2: IPv4 Subnetting in Depth

• Binary arithmetic for network and broadcast addresses

• Fixed-length and variable-length subnet masks

• Route summarization and supernetting with CIDR

• Private addressing, NAT and PAT

Module 3: IPv6 Essentials

• IPv6 address types, notation and prefixes

• Link-local, global unicast and multicast addresses

• SLAAC, DHCPv6 and neighbor discovery protocol

• Dual-stack operation and transition approaches

Module 4: The Transport Layer

• TCP three-way handshake and connection teardown

• Sequence numbers, acknowledgments and windowing

• UDP use cases such as DNS, VoIP and streaming

• Well-known, registered and ephemeral ports

Module 5: Application Protocols and Packet Inspection

• DNS queries, DHCP DORA and HTTP/HTTPS with TLS

• Capturing traffic and applying Wireshark display filters

• Following TCP streams and spotting retransmissions

• Diagnosing slow applications from capture evidence

Qatar's banks, energy companies, hospitals and government services increasingly run critical applications across interconnected networks and cloud platforms. As digital government services expand and new data centers support Qatar National Vision 2030, organizations need engineers who can look beneath the surface and explain exactly why traffic is slow or failing. Deep TCP/IP knowledge also supports the national emphasis on cybersecurity, because understanding normal protocol behavior is the first step in recognizing suspicious activity.

Join a scheduled class at our training center in Doha or attend live online. For organizations, the course can run as an in-house program at your premises or online, tailored to your sector, examples and schedule.