Comprehensive Networking Roadmap

Networking Fundamentals

• Network Devices
• OSI Model
• Host Communication
  • Local Network
  • Foreign Network
• Switches
  • Switches Part 1
  • Switches Part 2
• Routers
  • Routers Part 1
  • Routers Part 2
  • Routers Part 3
  • Route Precedence (Beyond)
• Networking Protocols
• How Data Moves Summary
• Local Broadcast vs Directed Broadcast (Beyond)

Virtual Local Area Network (VLAN)

• VLANs Overview
• Native VLANs (Needed?)
• Configuring VLANs
• Routing Between VLANs & Layer 3 Switches

Subnetting

• Subnetting Definition
• Subnetting Range 25-32
• Subnetting Range 17-24
• Subnetting Range 1-16
• Fixed/Variable Length Subnet Mask (FLSM/VLSM)
• Supernetting, IP Aggregation, IP Summarization
• Wildcard Masks
  • Discontiguous Wildcard Mask
• Configuring a Subnet

Network Address Translation (NAT)

• IP Conservation
• Static NAT
• Static PAT
• Dynamic NAT
• Dynamic PAT
• Policy NAT
• Twice NAT

Access Control Lists (ACLs)

TCP & UDP Mastery

Practical OSPF (Open Shortest Path First)

Practical TLS (Transport Layer Security)

Total Protocol Overview

Internet Protocol Suite (TCP/IP):

Link Layer:

• ARP: Address Resolution Protocol
• RARP: Reverse Address Resolution Protocol
• LLDP: Link Layer Discovery Protocol
• NDP: Neighbor Discovery Protocol

Network Layer:

• IP: Internet Protocol
  • IPv4: Internet Protocol version 4
  • IPv6: Internet Protocol version 6
• ICMP: Internet Control Message Protocol
• IGMP: Internet Group Management Protocol
• RIPng: Routing Information Protocol next generation (for IPv6)
• OSPFv3: OSPF for IPv6

Transport Layer:

• TCP: Transmission Control Protocol
• UDP: User Datagram Protocol
• SCTP: Stream Control Transmission Protocol
• DCCP: Datagram Congestion Control Protocol
• RUDP: Reliable User Datagram Protocol

Application Layer:

• HTTP: Hypertext Transfer Protocol
• HTTPS: HTTP Secure
• FTP: File Transfer Protocol
• SFTP: SSH File Transfer Protocol
• SMTP: Simple Mail Transfer Protocol
• POP3: Post Office Protocol 3
• IMAP: Internet Message Access Protocol
• DNS: Domain Name System
• DHCP: Dynamic Host Configuration Protocol
• SNMP: Simple Network Management Protocol
• SSH: Secure Shell
• Telnet: Telecommunication Network
• NTP: Network Time Protocol
• RIP: Routing Information Protocol
• OSPF: Open Shortest Path First
• BGP: Border Gateway Protocol
• EIGRP: Enhanced Interior Gateway Routing Protocol
• LDAP: Lightweight Directory Access Protocol
• XMPP: Extensible Messaging and Presence Protocol
• MQTT: Message Queuing Telemetry Transport
• SOAP: Simple Object Access Protocol
• RDP: Remote Desktop Protocol
• VNC: Virtual Network Computing
• TFTP: Trivial File Transfer Protocol
• NetFlow: Network Flow Monitoring Protocol
• IS-IS: Intermediate System to Intermediate System
• TACACS+: Terminal Access Controller Access-Control System Plus
• Kerberos: Network Authentication Protocol

Wireless Protocols:

• WPA: Wi-Fi Protected Access 1
• WPA2: Wi-Fi Protected Access 2
• WPA3: Wi-Fi Protected Access 3
• Bluetooth: Not an acronym
• Zigbee: Not an acronym
• LoRaWAN: Long Range Wide Area Network
• NFC: Near Field Communication
• WiMAX: Worldwide Interoperability for Microwave Access

Voice and Video Protocols:

• SIP: Session Initiation Protocol
• RTP: Real-time Transport Protocol
• RTCP: Real-time Transport Control Protocol
• H.323: Multimedia Communication Protocol
• SDP: Session Description Protocol
• MGCP: Media Gateway Control Protocol

Security Protocols:

• SSL: Secure Sockets Layer
• TLS: Transport Layer Security
• IPsec: Internet Protocol Security
• SRTP: Secure Real-Time Transport Protocol
• PPTP: Point-to-Point Tunneling Protocol
• L2TP: Layer 2 Tunneling Protocol

Industrial Protocols:

• Modbus: Not an acronym
• PROFIBUS: Process Field Bus
• EtherNet/IP: Ethernet Industrial Protocol

Other Specialized Protocols:

• RADIUS: Remote Authentication Dial-In User Service
• SMB: Server Message Block
• CIFS: Common Internet File System
• NNTP: Network News Transfer Protocol
• IRC: Internet Relay Chat
• UPnP: Universal Plug and Play
• AFP: Apple Filing Protocol
• iSCSI: Internet Small Computer Systems Interface
• ICAP: Internet Content Adaptation Protocol
• WebDAV: Web Distributed Authoring and Versioning

Deprecated or Replaced Protocols:

• IPX: Internetwork Packet Exchange
• SPX: Sequenced Packet Exchange
• NetBEUI: NetBIOS Extended User Interface
• WEP: Wired Equivalent Privacy (for Wi-Fi)
• SLIP: Serial Line Internet Protocol
• ATM: Asynchronous Transfer Mode

Cryptography

• Square and Multiply
• Hashing Algorithms
• Message Integrity
• Confidentiality
• Symmetric Encryption
• Asymmetric Encryption
• Using Asymmetric Keys
• Authentication
• Anti-Replay
• RSA Algorithm
• Diffie-Hellman
• Digital Signature Algorithm (DSA)

Miscellaneous

• Understanding Ethernet Wiring
• Regex

Acknowledgments

• Ed Harmoush - Practical Networking - For sharing his knowledge with everyone for free.