Internet Protocols:
- TCP/IP (Transmission Control Protocol/Internet Protocol):
- TCP/IP is the foundational suite of protocols that underpins the internet. It includes TCP for reliable data transmission and IP for addressing and routing. It is responsible for end-to-end communication across the internet.
- HTTP (Hypertext Transfer Protocol):
- HTTP is used for transferring web content, such as HTML documents, between web servers and browsers. It enables users to request and view web pages.
- HTTPS (HTTP Secure):
- HTTPS is a secure version of HTTP that uses encryption (SSL/TLS) to protect data exchanged between web servers and clients. It’s essential for secure online transactions and data privacy.
- FTP (File Transfer Protocol):
- FTP is used for transferring files between a client and a server. It allows users to upload, download, and manage files on remote servers.
- SMTP (Simple Mail Transfer Protocol):
- SMTP is used for sending and relaying email messages between mail servers. It defines the rules for email transmission and delivery.
- POP3 (Post Office Protocol version 3):
- POP3 is an email retrieval protocol used by email clients to download messages from a mail server to a local device. It typically deletes messages from the server once they are downloaded.
- IMAP (Internet Message Access Protocol):
- IMAP is another email retrieval protocol that allows email clients to access and manage messages stored on a mail server while keeping them synchronized.
- DNS (Domain Name System):
- DNS is a critical protocol for translating human-readable domain names (e.g., www.example.com) into IP addresses used for routing on the internet. It plays a vital role in internet navigation.
- DHCP (Dynamic Host Configuration Protocol):
- DHCP is used for dynamically assigning IP addresses and network configuration information to devices on a local network, simplifying network administration.
- ICMP (Internet Control Message Protocol):
- ICMP is used for diagnostic and error reporting in IP networks. It includes functions like ping and traceroute for network troubleshooting.
- SNMP (Simple Network Management Protocol):
- SNMP is used for monitoring and managing network devices, such as routers, switches, and servers. It enables administrators to gather information and perform remote management tasks.
- BGP (Border Gateway Protocol):
- BGP is used for routing and exchanging routing information between autonomous systems on the internet. It plays a crucial role in internet backbone routing.
- NTP (Network Time Protocol):
- NTP is used for synchronizing the clocks of devices on a network, ensuring accurate timekeeping for various applications and services.
- SSH (Secure Shell):
- SSH is a secure network protocol for secure remote login and command execution on remote servers. It provides encryption and authentication for secure communication.
- IPv4 (Internet Protocol version 4) and IPv6 (Internet Protocol version 6):
- These are the core IP protocols that define the addressing scheme for devices on the internet. IPv4 is widely used but faces address exhaustion, while IPv6 offers a much larger address space to accommodate future growth.
These internet protocols are essential for enabling communication, data exchange, and navigation on the World Wide Web and across the broader internet. They ensure the reliable and secure transmission of data between devices and systems in a globally connected network.
Key terms in plain language
Open a term for a concise explanation of language used on this page.
Fiber Internet
Internet delivered through strands of glass using light. Fiber commonly supports high capacity, low latency, and strong upload performance, but availability must be confirmed for the exact address.
Broadband
A general term for always-on, high-speed Internet access. Broadband can be delivered over fiber, cable, DSL, fixed wireless, cellular, or satellite networks.
Bandwidth
The amount of data a connection can carry in a given time, usually measured in Mbps or Gbps. More bandwidth supports more users, devices, and simultaneous applications.
Latency
The time it takes data to travel between two points. Lower latency improves voice, video meetings, cloud applications, gaming, and other real-time services.
Dedicated Internet Access (DIA)
A business-grade Internet connection with capacity dedicated to the customer rather than shared in the same way as typical consumer broadband. It often includes symmetrical speeds and an SLA.
SD-WAN
Software-defined wide area networking. It manages multiple connections and chooses paths based on application needs, performance, and policy to improve resilience and control.