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Troubleshooting ACLs with Wireshark

Course Summary

The goal of this course is to provide you with a foundation in Wireshark and how to implement it in real-world troubleshooting situations. This course demonstrates how to troubleshoot DNS, TFTP, and TCP on a typical network. Troubleshooting ACLs with Wire


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    Course Syllabus

    ● Introduction to Troubleshooting ACLs with Wireshark
        ◦ Introduction to Troubleshooting ACLs with Wireshark
    ● The OSI Model
        ◦ Network Protocols
        ◦ OSI Model
        ◦ OSI Model and Protocols at Each Layer
        ◦ OSI Model and Addressing at Each Layer
        ◦ Encapsulation Layers
        ◦ Transport Layer Protocols
        ◦ TCP 3-Way Handshake
        ◦ TCP 4-Way Disconnect
        ◦ UDP - Port Number Changes
    ● Wireshark Basics
        ◦ Segment, Packet, and Frame
        ◦ Complete Datagram
        ◦ Wireshark Overview
        ◦ Ping Capture
        ◦ Capturing a Website and Identifying the TCP 3-Way Handshake
        ◦ Capturing a More Complex Website
    ● Access Control List (ACL) Basics
        ◦ Layers Used in Access Control Lists
        ◦ Access Control List (ACL) Types
        ◦ Access Control List (ACL) Syntax
        ◦ Access Control List Examples
        ◦ Scenario
        ◦ Demonstrating ACLs
        ◦ Setting Up Globomantics ACLs
    ● Troubleshooting TFTP and DNS Through an ACL
        ◦ Introduction
        ◦ Globomantics Scenario
        ◦ Troubleshooting TFTP and DNS with Wireshark
        ◦ Showing DNS Being Blocked by the ACL in Wireshark
        ◦ Adding an ACL Rule to Allow DNS
        ◦ Checking That Our New ACL Rule Works with DNS
        ◦ Using Wireshark to Troubleshoot TFTP
        ◦ Adding an ACL Rule to Allow TFTP
        ◦ Checking That Our New ACL Rule Works with TFTP
    ● Troubleshooting TCP Through an ACL
        ◦ Globomantics Scenario
        ◦ Troubleshooting TCP with Wireshark
        ◦ Adding an ACL Rule to Attempt to Allow DNS
        ◦ Checking That Our New ACL Rule Works with DNS
        ◦ Understanding Why the New ACL Rule Does Not Work
        ◦ Adding ACL Rules to Allow DNS and TCP
        ◦ Checking That Our New ACLs Work with DNS and TCP

     


Course Fee:
USD 29

Course Type:

Self-Study

Course Status:

Active

Workload:

1 - 4 hours / week

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