This is a boring post about networking protocols
What are the most popular networking protocols?
Link to the ChatGPTHereβs a list of the **most popular and widely used networking protocols**, organized by their purpose and layer in the network stack (mainly based on the OSI and TCP/IP models):
### π **Core Internet & Transport Protocols**
These are the backbone of how devices communicate across the internet.
| Protocol | Full Name | Purpose || -------- | --------------------------------- | --------------------------------------------------------------------------------------- || **TCP** | Transmission Control Protocol | Reliable, connection-oriented data transfer between devices (used for web, email, etc.) || **UDP** | User Datagram Protocol | Faster, connectionless data transfer (used for streaming, gaming, VoIP) || **IP** | Internet Protocol (IPv4 / IPv6) | Routes packets across networks || **ICMP** | Internet Control Message Protocol | Network diagnostics (e.g., `ping`, `traceroute`) || **ARP** | Address Resolution Protocol | Maps IP addresses to MAC addresses in local networks |
### π₯οΈ **Application Layer Protocols**
Used for specific types of communication between applications.
| Protocol | Full Name | Common Use || ---------------------- | --------------------------------------------------------------------- | ---------------------------------------- || **HTTP / HTTPS** | Hypertext Transfer Protocol (Secure) | Web browsing, APIs || **DNS** | Domain Name System | Translates domain names to IP addresses || **FTP / SFTP** | File Transfer Protocol / Secure FTP | File uploads and downloads || **SMTP / IMAP / POP3** | Simple Mail Transfer / Internet Message Access / Post Office Protocol | Email sending and receiving || **SSH** | Secure Shell | Secure remote access to servers || **TELNET** | Telecommunication Network | Legacy remote login protocol (insecure) || **SNMP** | Simple Network Management Protocol | Network monitoring and device management || **NTP** | Network Time Protocol | Synchronizes system clocks over networks || **DHCP** | Dynamic Host Configuration Protocol | Assigns IP addresses automatically |
### 𧩠**LAN & Network Infrastructure Protocols**
Used within local networks and by network devices.
| Protocol | Full Name | Common Use || ------------------------- | -------------------------------------------------------- | ----------------------- || **Ethernet (IEEE 802.3)** | β | Standard for wired LANs || **Wi-Fi (IEEE 802.11)** | β | Wireless networking || **VLAN / 802.1Q** | Virtual LAN | Network segmentation || **STP / RSTP** | Spanning Tree Protocol / Rapid STP | Prevents network loops || **LLDP / CDP** | Link Layer Discovery Protocol / Cisco Discovery Protocol | Device discovery |
### π **Security & Encryption Protocols**
Used to secure data and authenticate users.
| Protocol | Full Name | Common Use || ------------------------- | ----------------------------------------------- | ---------------------------------------------- || **TLS / SSL** | Transport Layer Security / Secure Sockets Layer | Encryption for HTTPS, email, etc. || **IPSec** | Internet Protocol Security | VPNs and secure IP communication || **Kerberos** | β | Authentication in enterprise networks || **RADIUS / TACACS+** | β | Centralized authentication for network devices || **OAuth / OpenID / SAML** | β | Identity and access management on the web |
### π‘ **Routing & Network Control Protocols**
Used by routers and network infrastructure.
| Protocol | Full Name | Purpose || --------------- | ---------------------------------------------------------------- | -------------------------------------------------- || **BGP** | Border Gateway Protocol | Routing between large networks (the Internet) || **OSPF** | Open Shortest Path First | Internal network routing || **EIGRP / RIP** | Enhanced Interior Gateway Routing / Routing Information Protocol | Dynamic routing within networks || **MPLS** | Multiprotocol Label Switching | Efficient routing in enterprise & carrier networks |
If youβd like, I can narrow this down to **the most important protocols to learn for IT/cybersecurity**, or for **software/network engineers** β would you like me to tailor the list that way?
Link to the ChatGPTSponsored: Atefeh (Ati) Yousefi Attaei - Senior Cloud Network Engineer | North America Cloud Engineering
Free Resources:
Network Academy - Ivan Ivanov, Network Architect and Lead Instructor
Bytebytego Engineering Visual Guides
Networking Fundamentals - Kevin Wallace, Cisco Certified Internetwork Expert
David Bombal - CCIE # 11023 (Emeritus), over 15 years of network training experienceCBT Nuggets (IT Certifications)
Fredy's Bitly Links - https://bit.ly/FredySpinning
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