I still remember my first Wireshark lab; it was an academic assignment where the goal was to capture and identify a username and password from network traffic. I opened a packet capture containing plain HTTP traffic and analyzed the packets in Wireshark. Since HTTP isn’t encrypted, the login form data was visible right inside the packet details, which meant Wireshark could display the username and password line by line. It made me realize that if I can see credentials, an attacker can too. If a login is sent over HTTP, the system has already failed at the most basic level of cybersecurity, which is securing credentials in transit.
Shortcuts
- What is Wireshark?
- Why is it Important to Learn Wireshark?
- Why Should You Trust Us and This Guide?
- The Best Wireshark Courses
What is Wireshark?
Wireshark is a packet capture and protocol analysis tool. In simple terms, whenever we use the internet, our devices exchange the data by means of Wi-Fi or mobile data, and sometimes through an Ethernet cable. That data doesn’t move in one large file. It travels in small chunks called packets.
Wireshark lets us capture those packets and inspect them so we can see what actually happened during a connection. So basically, Wireshark helps us understand why a connection is failing, what an app is doing on the network, and spot traffic that doesn’t look normal.
Why is it Important to Learn Wireshark?
- Troubleshoot network issues (slow connections, drops, DNS/VPN problems)
- Investigate suspicious traffic (odd outbound connections, scans, beaconing patterns)
- Validate app behavior (are requests/responses correct, hitting the right endpoints)
- Debug protocol/integration bugs (handshakes failing, client-server mismatch)
- Learn how protocols really work (DNS, TCP, HTTP, TLS—beyond theory)
- Support incident response (evidence for what talked to what, when, and how much data moved)
Why Should You Trust Us and This Guide?
Class Central is a TripAdvisor for online education. We make it easier to discover the right courses without having to jump across multiple platforms. With over 250,000 courses in our catalog, we’ve already helped more than 100 million learners find their next course.
Now, why should you trust this guide?
As a senior security specialist, I have seen both offensive and defensive security professionals using Wireshark. Defensive teams rely on it during incident response and triage to confirm what actually happened on the network i.e. suspicious connections, odd DNS behavior, or unexpected protocol use. Offensive teams use it to validate payload delivery and callbacks, troubleshoot why an exploit chain isn’t behaving as expected, and catch anything leaking in cleartext. This hands-on exposure inspired me to create this guide, along with the fact that Wireshark is open source, widely adopted, and accessible to anyone who wants to learn.
The Best Wireshark Courses
Best Introduction to TCP/IP using Wireshark (Yonsei University)
- Level: Beginner
- Rating: 4.6
- Duration: 8 hours
- Cost: Paid
What You’ll Learn
- Understand how your own PC/laptop actually gets on the internet: IP setup, DHCP, default gateway, and routing table basics
- Learn the core TCP/IP building blocks: IPv4 vs IPv6, UDP vs TCP, ports, and the basics of CIDR/subnets (at an intro level)
- Get familiar with the “plumbing” behind real connections: IGP vs EGP, OSPF, ARP, NAT, plus basics of FTP and email protocols (IMAP/POP3)
- Do a simple Wireshark experiment so you can actually see TCP/IP packets and relate them to what your machine is doing
- Pick up a high-level understanding of common internet attacks and defenses (firewalls, IDS, TLS, Wi-Fi security, SSH).
I often see professionals having strong command over theory, yet struggling to apply that in real-world triage. As they often mug up definitions, without any live exposure. Introduction to TCP/IP by Yonsei University will teach you how to install Wireshark, followed by a project, so you can directly connect the dots between theory and practice.
The course instructor, Jong-Moon Chung, has designed the course in 5 modules covering how your PC/laptop is configured (DHCP, gateway, routing table), followed by TCP/IP protocols (IPv4/IPv6, UDP/TCP), and after that it touches routing and everyday internet functions like ARP and NAT. Which is followed by graded assignment for better retention.
A small heads-up: some topics are covered at a fast pace or not given enough coverage (for example, UDP), so if you’re a beginner, you might want to supplement it from other sources.
Note: You can also check out this course Deep-Dive into Protocols and Security (Trainsec).
Best Introduction to Wireshark & Packet Analysis (LinkedIn Learning)
- Level: Intermediate
- Rating: 4.7
- Duration: 2.5 hours
- Cost: Paid
What You’ll Learn
- Build understanding of networking concepts from the basics up until the use of Wireshark as a tool for malware analysis
- Understand Wireshark tool skills, the interface, the use of display and capture filters and their use cases, and analysis tools native to Wireshark
- Learn the network and protocol analysis skills and analysis of core infrastructure protocols of Wireshark
- Get hands-on experience on troubleshooting and security skills, including identification of traffic patterns, deep packet analysis of application protocols, and identification of signs of network attacks.
Lisa Block’s course, Wireshark Essential Training, is a solid introduction to Wireshark and the fundamentals of packet analysis. In about 2.5 hours, it walks you through the interface, what to focus on in a capture, and how to use both display and capture filters (including how to validate and color-code them so your workflow stays clean).
You’ll also get comfortable with Wireshark’s built-in stats and analysis views, which is where packet data starts turning into a story. Although some learners expressed concern regarding the fast pace of the course. But by the end, you should be able to record traffic, filter it down fast, and spot patterns that point to suspicious behavior like unusual connections, odd domains, or traffic that doesn’t fit the baseline.
Best Malware & Network Forensics Course with Wireshark (LinkedIn Learning)
- Level: Intermediate
- Rating: 4.7
- Duration: 2 hours
- Cost: Paid
What You’ll Learn
- Learn the use of Wireshark specifically as a security and forensics tool in this course
- Understand the basics of malware and forensics with concepts of malware types, packet analysis role and network forensics
- Build hands-on experience in deep packet analysis using Wireshark
- Learn detection and filtering techniques for identification of threats and isolation of suspected traffic, all through WireShark as a tool
- Build your skill set with respect to incident handling and response by analysis of packets, creation of firewall rules, and implementation of solutions.
Wireshark isn’t just a “packet capture tool” you use for basic troubleshooting; it can also be a very practical tool for security work, and that’s what this course focuses on. Instead of staying at a generic level, it shows how to use Wireshark for malware detection and network forensics: how to spot suspicious traffic patterns, isolate what matters using filters, and then dig deeper to understand what’s really going on in a capture. I also liked that the course, Wireshark: Malware and Forensics, uses real-world style scenarios, because they push you to think the way you would during an actual investigation, not just in a lab checklist.
Lisa Bock keeps the learning curve manageable by starting with the basics of malware and forensics, then gradually moving into deeper packet analysis, indicators of compromise, and patterns you might see in compromised hosts or more persistent threats. Even though it’s only about two hours long, it covers enough to help intermediate learners connect Wireshark skills to incident response, from analyzing packets to turning findings into actions like blocking or containment. The completion certificate is a small bonus, but the real value is the workflow it builds for SOC and threat-hunting use cases.
Best Network Traffic Analysis Course with Wireshark (SkillUp)
- Level: Intermediate
- Rating: 5
- Duration: 13 hours
- Cost: Paid
What You’ll Learn
- Learn about the use of Wireshark as a tool for packet capturing and advanced filtering techniques
- Gain experience about Deep Packet Inspection (DPI) and network protocol analysis for vulnerability detection
- Understand concepts of Anomaly Detection, flow data analysis, threat identification
- Acquire hands-on skills with DDoS identification, incident response reporting, and intrusion detection/prevention.
- Learn about processes such as network monitoring and digital forensics, skills which are important for building a career in malware analysis.
Wireshark has become a go-to tool in malware analysis and incident response, mainly because it helps you validate what’s actually happening on the network instead of relying on guesswork. If you’re a SOC analyst or someone moving toward IR, getting comfortable with Wireshark is one of those skills that pays off quickly, and Network Traffic Analysis with Wireshark is designed with that goal in mind.
What I liked is that it doesn’t treat Wireshark as “just another packet capture tool.” It starts with the fundamentals, then steadily builds into the kind of analysis you’d actually do in security work: capturing traffic properly, using advanced filters without getting lost, and applying those techniques to real scenarios. The learning flow is structured for intermediate learners, and the hands-on labs, quizzes, and add-ons/plugins keep it practical rather than purely theoretical. The modules are also broken down in a way that’s easy to finish even if you’re busy, which makes the course feel manageable instead of overwhelming. Overall, it’s a solid option if you want a clear, job-relevant path from Wireshark basics to using it confidently for threat-focused traffic analysis.
Best Intro to Wireshark for Beginners (Coursera)
- Level: Beginner
- Rating: 4.6
- Duration: 1.5 hours
- Cost: Paid Certificate
What You’ll Learn
- Learn the basics of network analysis and network monitoring, along with network protocols and TCP/IP fundamentals using Wireshark as a tool
- Gain hands-on experience about the basics of Wireshark in an Ubuntu lab environment
- The course covers the very basics, right from the installation of Wireshark, right up to the use of filters, capture and observation of packets
- The capstone task included in the course allows relevant experience of topics covered in the course.
If you’re new to Wireshark, Wireshark for Beginners: Capture Packets is a solid way to get started without feeling overwhelmed. It stays practical from the beginning, walking you through real packet captures, basic filtering (including HTTP/HTTPS), and a few simple security-focused tasks so you’re not just watching someone click around the interface. And since it’s only about 1.5 hours long, it’s easy to finish in one sitting and still come away with useful skills. One thing to keep in mind is that the course uses a cloud-based VM, and it can be a bit glitchy at times. That said, the core learning still lands well. By the end, you’ll have the foundational habits that matter for deeper work later: capturing traffic cleanly, filtering it down, and making sense of what you’re seeing. It’s a good stepping stone before you move into more advanced Wireshark courses focused on network forensics or malware analysis.
Best Network Troubleshooting Course with Wireshark (LinkedIn Learning)
- Level: Intermediate
- Rating: 4.7
- Duration: 2 hours
- Cost: Paid
What You’ll Learn
- Learn about the foundational basics of network diagnostics, by directly incorporating Wireshark as a tool for triage problems, including basic TCP/IP issues, etc.
- Understand about the troubleshooting process for home networking, corporate Wi-Fi problem and wireless interference
- Learn about concepts of traffic pattern recognition and packet captures using Wireshark before diving deep into detailed protocol analysis.
Before you dive into Wireshark-heavy courses, Learning Network Troubleshooting helps you build the troubleshooting habits that make packet analysis easier. It focuses on using PowerShell and Linux commands to triage common symptoms first like Wi-Fi drops, VPN failures, DNS issues, or routing problems. So you’re not capturing “everything” and hoping the answer shows up. Once you know what to check on the host and what the likely failure looks like, it becomes much easier to capture the right traffic in Wireshark and interpret it in context.
I also liked the fact that it’s short (around two hours) but still practical. It gives you a real-world diagnostic workflow you can reuse in SOC-style investigations: spot the anomaly early, narrow down where the problem likely is, then use Wireshark to confirm what’s happening on the network. If you’re trying to move toward malware forensics or incident response, this approach saves time because it reduces guesswork before you even start digging into packets. The completion certificate is a small plus, but the bigger value is the structured troubleshooting mindset it builds.
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