{"id":55,"date":"2025-11-30T15:31:08","date_gmt":"2025-11-30T15:31:08","guid":{"rendered":"https:\/\/adler-tech.com\/?page_id=55"},"modified":"2026-04-13T15:39:58","modified_gmt":"2026-04-13T14:39:58","slug":"wireshark-fundamentals-deep-packet-analysis-for-network-troubleshooting","status":"publish","type":"page","link":"https:\/\/adler-tech.com\/?page_id=55","title":{"rendered":"Wireshark Fundamentals: Deep Packet Analysis for Network Troubleshooting"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p><strong>Duration:<\/strong> 21 Hours (3 Days) <strong>Focus:<\/strong> Packet Capture, Filter Logic, and Performance Diagnostics<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Day 1: Wireshark Foundation and Filter Mastery \ud83d\udd2c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Module 1: Network Troubleshooting Essentials<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Troubleshooting Core<\/strong> (<strong>What is network troubleshooting<\/strong> and why it&#8217;s critical).<\/li>\n\n\n\n<li><strong>Tool Overview<\/strong> (<strong>Troubleshooting tools<\/strong> landscape and capabilities).<\/li>\n\n\n\n<li><strong>Methodologies<\/strong> (Systematic <strong>Troubleshooting methodologies<\/strong>, e.g., the OSI model approach).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Module 2: Introduction to Wireshark<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Application Mechanism<\/strong> (<strong>How Wireshark Works<\/strong> and the role of libpcap\/WinPcap).<\/li>\n\n\n\n<li><strong>Setup and Configuration<\/strong> (Setting <strong>Global Preferences<\/strong>).<\/li>\n\n\n\n<li><strong>Packet Capture<\/strong> (<strong>Capturing Packets<\/strong> and defining capture interfaces).<\/li>\n\n\n\n<li><strong>Initial Filters<\/strong> (Defining the difference between <strong>capture and display filters<\/strong>).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Module 3: Navigation and Trace File Management<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Interface Techniques<\/strong> (<strong>Navigation and Colorization Techniques<\/strong> for trace file review).<\/li>\n\n\n\n<li><strong>Time Analysis<\/strong> (Understanding and <strong>Using Time Values<\/strong> and relative\/absolute time).<\/li>\n\n\n\n<li><strong>Trace File Summaries<\/strong> (Examining <strong>Basic Trace File Statistics<\/strong>).<\/li>\n\n\n\n<li><strong>Data Handling<\/strong> (<strong>Save, Export and Print<\/strong> functions for analysis sharing).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Module 4: Capture and Display Filter Language<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Capture Filters (BPF)<\/strong> (Capture filters \u2013 <strong>basics and filter language<\/strong> (e.g., <code>host<\/code>, <code>port<\/code>, <code>proto<\/code>)).<\/li>\n\n\n\n<li><strong>Display Filters (Wireshark)<\/strong> (Display filters \u2013 <strong>basics and filter language<\/strong> (e.g., field names, operators)).<\/li>\n\n\n\n<li><strong>Filter Utility<\/strong> (<strong>Useful filters<\/strong> for immediate diagnostic tasks (e.g., <code>ip.addr<\/code>, <code>tcp.flags.syn==1<\/code>)).<\/li>\n\n\n\n<li><strong>Practical Application<\/strong> (<strong>Lab exercises and case studies<\/strong> applying complex filter logic).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Day 2: Advanced Analysis and Performance Metrics \ud83d\udcca<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Module 5: Time Values and Timing Issues<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Time Column Usage<\/strong> (Using the <strong>default time column setting and precision<\/strong>).<\/li>\n\n\n\n<li><strong>Inter-Packet Timing<\/strong> (Analyzing <strong>time between packets<\/strong>).<\/li>\n\n\n\n<li><strong>Reference Setting<\/strong> (How to <strong>Set a time reference and view capture times<\/strong>).<\/li>\n\n\n\n<li><strong>Timing Diagnostics<\/strong> (<strong>Troubleshooting timing problems<\/strong> using time delta and time since first frame).<\/li>\n\n\n\n<li><strong>Hands-on Practice<\/strong> (<strong>Lab exercises and case studies<\/strong> focused on latency symptoms).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Module 6: Statistical Analysis Tools<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>I\/O Graphs<\/strong> (How to <strong>Create I\/O graphs<\/strong> to visualize throughput and burst traffic).<\/li>\n\n\n\n<li><strong>Flow Analysis<\/strong> (Analyzing <strong>TCP\/IP flows<\/strong> and <strong>Analyse applications flows<\/strong>).<\/li>\n\n\n\n<li><strong>TCP Metrics<\/strong> (Creating <strong>TCP Time-Sequence graphs<\/strong> for window and ACK analysis).<\/li>\n\n\n\n<li><strong>Graph Evaluation<\/strong> (Analyzing <strong>flow graphs<\/strong>).<\/li>\n\n\n\n<li><strong>Service Response Time<\/strong> (Evaluating <strong>service response times<\/strong> and calculating application delay).<\/li>\n\n\n\n<li><strong>Round-Trip Time (RTT)<\/strong> (Creating <strong>Round-Trip-Time graphs<\/strong>).<\/li>\n\n\n\n<li><strong>Case Studies<\/strong> (<strong>Lab exercises and case studies<\/strong> using statistical outputs).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Module 7: The Expert System and Performance Problems<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Expert Basics<\/strong> (Understanding <strong>The Expert System Basics<\/strong> (Info, Warn, Error, Chat)).<\/li>\n\n\n\n<li><strong>Communication Contexts<\/strong> (Identifying <strong>Normal and un-normal Network Communications<\/strong>).<\/li>\n\n\n\n<li><strong>Symptom Identification<\/strong> (Identifying common <strong>Causes of Performance Problems<\/strong>).<\/li>\n\n\n\n<li><strong>Key Indicators<\/strong> (Recognizing <strong>Packet Losses, Ack too longs and Retransmissions<\/strong>).<\/li>\n\n\n\n<li><strong>Diagnostics Practice<\/strong> (<strong>Lab and case studies<\/strong> using Expert System output).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Day 3: Bandwidth, Latency, and Retransmission Diagnostics \ud83d\udcc9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Module 8: Bandwidth and Throughput Issues<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Measurement Techniques<\/strong> (<strong>Bandwidth measurement<\/strong> concepts).<\/li>\n\n\n\n<li><strong>Throughput Calculation<\/strong> (Performing <strong>User\/flow throughput calculations<\/strong> and <strong>Applications throughput calculations<\/strong>).<\/li>\n\n\n\n<li><strong>Problem Identification<\/strong> (Diagnosing <strong>Bandwidth and throughput problems<\/strong> using I\/O graphs).<\/li>\n\n\n\n<li><strong>Throughput Labs<\/strong> (<strong>Lab exercises and case studies<\/strong> on congestion identification).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Module 9: Latency Diagnostics<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Latency Calculation<\/strong> (Understanding <strong>The primary points in calculating latency<\/strong>).<\/li>\n\n\n\n<li><strong>Visualizing Latency<\/strong> (Methods for <strong>Plotting high latency times<\/strong>).<\/li>\n\n\n\n<li><strong>External Tools<\/strong> (Review of <strong>Free latency calculators<\/strong>).<\/li>\n\n\n\n<li><strong>Delta Filter<\/strong> (Using the <strong>frame.time_delta filter<\/strong> for per-packet analysis).<\/li>\n\n\n\n<li><strong>Latency Labs<\/strong> (<strong>Lab exercises and case studies<\/strong> focusing on RTT).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Module 10: Packet Loss and Retransmissions<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Loss Mechanisms<\/strong> (Understanding <strong>Packet loss and recovery &#8211; UDP and TCP<\/strong>).<\/li>\n\n\n\n<li><strong>TCP Loss Events<\/strong> (Identifying <strong>Previous segment lost<\/strong> and <strong>Out-of-Order Segments events<\/strong>).<\/li>\n\n\n\n<li><strong>Fast Recovery<\/strong> (Identifying <strong>Duplicate ACKs and Fast Retransmissions<\/strong>).<\/li>\n\n\n\n<li><strong>Retransmission Analysis<\/strong> (Analyzing <strong>TCP Retransmissions<\/strong>).<\/li>\n\n\n\n<li><strong>Window Management<\/strong> (Identifying <strong>Zero window, Window changes and other window problems<\/strong> (e.g., TCP Window Full)).<\/li>\n\n\n\n<li><strong>Deep Dive Labs<\/strong> (<strong>Lab exercises and case studies<\/strong> on recovering and diagnosing session integrity issues).<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Duration: 21 Hours (3 Days) Focus: Packet Capture, Filter Logic, and Performance Diagnostics Day 1: Wireshark Foundation and Filter Mastery \ud83d\udd2c Module 1: Network Troubleshooting Essentials Module 2: Introduction to Wireshark Module 3: Navigation and Trace File Management Module 4: Capture and Display Filter Language Day 2: Advanced Analysis and Performance Metrics \ud83d\udcca Module 5: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":206,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-55","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is 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