Troubleshooting network communications with Wireshark

Knowledge within the scope of the courses listed in the Previous courses and Related courses sections>
Good knowledge of TCP/IP and DNS technologies

Research of the test environment on the Hyper-V platform, virtual networks and allocation of MAC addresses to virtual computers
Introduction to Windows Firewall
Architecture of WireShark and its installation on Windows
Architecture of nmap and its installation on Windows
Basics of wireshark network interception
Filtering packets in WireShark
Principles of ARP protocol using WireShark and its use for troubleshooting, network exploration and searching for nearby computers using NMAP
Review of DHCP principles using WireShark and its use for troubleshooting, network exploration and troubleshooting DHCP itself, DHCP Relay and using NMAP
Scanning UDP services and their UDP ports using NMAP on examples of services such as DNS, RADIUS and NTP
Reminding of ICMP functions such as Destination Port Unreachable and Echo (Ping)
Review of TCP operation using WireShark, three-way communication negotiation and port scanning using NMAP and Test-NetConnection in PowerShell
Solution problems with duplicate IP addresses and firewall penetrations in general and specifically using Windows Defender Firewall
Troubleshooting DNS name resolution on LAN using NSLOOK, Resolve-DnsName, NMAP and WireShark
Basics of HTTP protocol, HTTP proxy, basics of HTTPS and TLS
Using the Fiddler tool for basic exploration of HTTP and HTTPS communications
Intranet communications in Windows LAN networks such as LDAP, Kerberos, SMB, RPC, DCOM and WMI, RDP, WinRM and Enter-PSSession and troubleshooting them
Details of initiating TLS communications of TLS 1.0, TLS 1.1, TLS 1.2 and TLS 1.3 protocols and troubleshooting them with Wireshark

For Microsoft certification exams, except for MCM certifications, participation in the official MOC course is not required a condition for passing the exam
Official Microsoft MOC courses and our own GOC courses are a suitable part of preparing for Microsoft certification exams, such as MTA, MCP, MCSA, MCSE, or MCM
However, the primary goal of the course is not directly preparing for certification exams, but mastering theoretical principles and acquiring practical skills necessary to work effectively with a given product
MOC courses usually cover almost all areas required for the corresponding certification exams. However, their discussion in the course is not always given exactly the same time and emphasis as the certification exam requires
As additional preparation for certification exams, you can use, for example, books from MS Press (so-called Self-paced Training Kit) and electronic self-test software

Previous courses

Networking and TCP/IP Basics and preparation for Network+ [GOC2]

Next courses

Networking - basic and security of web technologies [GOC217]

Networking - Advanced TCP/IP and Wireless Networking Technologies [GOC186]