{"id":61,"date":"2025-11-30T15:36:53","date_gmt":"2025-11-30T15:36:53","guid":{"rendered":"https:\/\/adler-tech.com\/?page_id=61"},"modified":"2026-04-13T15:43:54","modified_gmt":"2026-04-13T14:43:54","slug":"wireshark-systematic-network-diagnostics-and-performance-analysis","status":"publish","type":"page","link":"https:\/\/adler-tech.com\/?page_id=61","title":{"rendered":"Wireshark: Systematic Network Diagnostics and Performance Analysis"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\"><\/h1>\n\n\n\n<p><strong>Duration:<\/strong> 21 Hours (3 Days) <strong>Focus:<\/strong> Packet Inspection, Flow Analysis, and Performance Pinpointing<\/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: Foundation, Capture, and Basic Analysis \ud83d\udd2c<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Module 1: Introduction and Tool Setup<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Wireshark Positioning<\/strong> (Understanding that <strong>Wireshark is not just a last-resort tool<\/strong> but a primary diagnostic utility).<\/li>\n\n\n\n<li><strong>Troubleshooting Core<\/strong> (Overview of <strong>Network Troubleshooting Concepts<\/strong> and the principles of <strong>Root cause analysis<\/strong>).<\/li>\n\n\n\n<li><strong>Installation<\/strong> (<strong>Installing Wireshark<\/strong> and required system libraries).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Module 2: Interface Overview and Traffic Capture<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>User Interface Mastery<\/strong> (Navigating the <strong>UI interface<\/strong> (packet list, details, hex panes)).<\/li>\n\n\n\n<li><strong>Interface Selection<\/strong> (<strong>Selecting the network interface<\/strong> for capture).<\/li>\n\n\n\n<li><strong>Capture Techniques<\/strong> (<strong>Capturing packets on wired and wireless networks<\/strong> (e.g., using monitor mode)).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Module 3: Basic Log Inspection and Session Analysis<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Offline Inspection<\/strong> (<strong>Saving the log for offline inspection<\/strong> (e.g., using <code>.pcap<\/code> format)).<\/li>\n\n\n\n<li><strong>HTTP Inspection<\/strong> (<strong>Inspecting the HTTP packets<\/strong> for status codes and payloads).<\/li>\n\n\n\n<li><strong>Stream Flow<\/strong> (Viewing <strong>back-and-forth TCP streams<\/strong> using the Follow TCP Stream feature).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Module 4: Initial Troubleshooting Steps<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Filtering Essentials<\/strong> (Using basic display <strong>filters<\/strong> to isolate specific traffic).<\/li>\n\n\n\n<li><strong>Statistical Overview<\/strong> (Seeing the <strong>statistics<\/strong> of the loaded trace file (protocol distribution, endpoints)).<\/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: Performance, Timing, and Flow Analysis \ud83d\udcc8<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Module 5: Performance Diagnostics and Response Times<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Timing Columns<\/strong> (Setting <strong>delta time columns<\/strong> to check time differences between packets).<\/li>\n\n\n\n<li><strong>Response Time Check<\/strong> (Checking <strong>Response Times<\/strong> for client-server transactions).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Module 6: Troubleshooting Slow Connections<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Isolating Problem Domains<\/strong> (Analyzing <strong>Connection Speed Issues When Connecting to a Particular Website<\/strong>).<\/li>\n\n\n\n<li><strong>Sustained Issues<\/strong> (Diagnosing <strong>Consistently slow connections over prolonged periods of time<\/strong>).<\/li>\n\n\n\n<li><strong>Expert System<\/strong> (Introduction to the <strong>Wireshark Expert System<\/strong> and the <strong>TCP\/IP Resolution Flowchart<\/strong>).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Module 7: Analysis by Traffic Type<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Protocol Deep Dive<\/strong> (Analyzing traffic across major protocols: <strong>DNS, ARP, IPv4, IPv6, ICMP, UDP, TCP, and HTTP\/HTTPS<\/strong>).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Module 8: Pinpointing Performance Issues<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Statistical Visualization<\/strong> (Creating <strong>statistical charts and graphs<\/strong> for flow analysis and bandwidth use).<\/li>\n\n\n\n<li><strong>Color Rules<\/strong> (Setting <strong>colors in Wireshark<\/strong> to visually identify anomalies).<\/li>\n\n\n\n<li><strong>Targeted Filtering<\/strong> (<strong>Filtering traffic<\/strong> using advanced expressions to isolate symptoms).<\/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: Security, Configuration, and Troubleshooting Scenarios \ud83d\udea8<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Module 9: Identifying Malicious and Anomalous Traffic<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ARP Inspection<\/strong> (<strong>Inspecting ARP traffic<\/strong> for spoofing or unusual activity).<\/li>\n\n\n\n<li><strong>Malware Detection<\/strong> (Checking for <strong>Machines Infected with a Virus<\/strong> by observing connection patterns).<\/li>\n\n\n\n<li><strong>Misconfiguration<\/strong> (Inspecting for <strong>Broken\/misconfigured software (network flooding)<\/strong>).<\/li>\n\n\n\n<li><strong>Software Probes<\/strong> (Inspecting <strong>Sources of Network Traffic<\/strong>, including applications like <strong>Intel ANS probe<\/strong>).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Module 10: Troubleshooting Secured and Complex Environments<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Secured Contexts<\/strong> (Troubleshooting <strong>Connections within a Secured Network Environment<\/strong>).<\/li>\n\n\n\n<li><strong>Perimeter Issues<\/strong> (Diagnosing problems related to <strong>Proxies, firewalls and clients<\/strong>).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Module 11: Wireshark Optimization and Methodology<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Non-Intrusive Analysis<\/strong> (Configuring Wireshark for <strong>Optimal Performance<\/strong> and <strong>Non-intrusive analysis<\/strong>).<\/li>\n\n\n\n<li><strong>Workflow Integration<\/strong> (Review of systematic troubleshooting procedures).<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Module 12: Summary and Conclusion<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Comprehensive Troubleshooting<\/strong> (Review of core skills and techniques).<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Duration: 21 Hours (3 Days) Focus: Packet Inspection, Flow Analysis, and Performance Pinpointing Day 1: Foundation, Capture, and Basic Analysis \ud83d\udd2c Module 1: Introduction and Tool Setup Module 2: Interface Overview and Traffic Capture Module 3: Basic Log Inspection and Session Analysis Module 4: Initial Troubleshooting Steps Day 2: Performance, Timing, and Flow Analysis \ud83d\udcc8 [&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-61","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Wireshark: Systematic Network Diagnostics and Performance Analysis - ADLER-TECH<\/title>\n<meta name=\"description\" content=\"Learn 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