Networking Foundations: Protocols and CLI Tools

Explore the main methods for troubleshooting network connectivity issues using different protocols and command-line (CLI) tools

Introduction

• Networking protocols and CLI tools
• What you should know

1. Protocol Basics

• Protocols
• Connection-oriented vs. connectionless protocols
• Port addresses
• The difference between packets and frames

2. Protocols Used in Networking

• Understand ARP and RARP
• Utilizing ICMP
• How IGMP is used with multicast
• DNS and NetBIOS in your environment
• HTTP operation
• HTTPS's role in securing browsing
• Exchanging email with POP, IMAP, and SMTP
• VoIP protocols (voice over a network)
• Transferring files via FTP and TFTP
• Network files via SMB
• Secure network communication via SSH
• Remote desktops: RDP, VNC, and cloud based
• Network management via SNMP
• DHCP's role in modern networks

3. Common Command Line (CLI) Tools

• Using ipconfig and ifconfig to verify IP settings
• Utilizing network tools: ping, tracert, and pathping
• Verify address mapping via the ARP command
• The Telnet tool's multiple uses
• Netstat's operation

Conclusion

• Networking next steps