Explain the types of network protocols | CDW
Types of Network Protocols
There are three main types of network protocols. These include network management protocols, network communication protocols and network security protocols:
- Communication protocols include basic data communication tools like TCP/IP and HTTP.
- Management protocols maintain and govern the network through protocols such as ICMP and SNMP.
- Security protocols include HTTPS, SFTP, and SSL.
Let's take a closer look at each, so you can better understand their role in your network.
Network Communication Protocols
Communication protocols are vital to the functioning of a network. In fact, computer networks can't exist without these protocols. These protocols formally describe the formats and rules by which data is transferred over the network. This is a must-have for exchanging messages between your computing systems and in telecommunications, applying to both hardware and software. Communication protocols also handle authentication and error detection as well as the syntax, synchronization and semantics that both analog and digital communications must abide by to function.
- HTTP – One of the most familiar protocols, hyper text transfer protocol (HTTP) is often referred to as the protocol of the internet. HTTP is an application layer protocol that allows the browser and server to communicate.
- TCP – Transmission Control Protocol (TCP) separates data into packets that can be shared over a network. These packets can then be sent by devices like switches and routers to the designated targets.
- UDP – User Datagram Protocol (UDP) works in a similar way to TCP, sending packets of data over the network. The key difference between the two is that TCP ensures a connection is made between the application and server, but UDP does not.
- IRC – Internet Relay Chat (IRC) is a text-based communication protocol. Software clients are used to communicate with servers and send messages to other clients. This protocol works well on networks with a large number of distributed machines.
Network Management Protocols
Network management protocols help define the policies and procedures used to monitor, manage and maintain your computer network, and help communicate these needs across the network to ensure stable communication and optimal performance across the board.
Generally, network managers can use a management protocol to troubleshoot connections between host and client devices. Management protocols provide network managers with the host connection's status, availability, packet or data loss, and other related information about the health of the network connection.
The policies managed by management protocols can be applied to all devices on the network, including computers, switches, routers and even servers.
Two of the most common types of network management protocols include Simple Network Management Protocol (SNMP) and Internet Control Message Protocol (ICMP).
- SNMP – Simple Network Management Protocol (SNMP) is used to monitor and manage network devices. This TCP-based protocol allows administrators to view and modify endpoint information to alter behavior of devices across the network. SNMP relies on the use of agents to collect and send data to an overarching SMNP manager, which in turn queries agents and gets their responses.
- ICMP – Internet Control Message Protocol (ICMP) is primarily used for diagnostic purposes. Managed devices on the network can use this protocol to send error messages, providing information regarding network connectivity issues between devices.
Network Security Protocols
Network security protocols work to ensure that data in transit over the network's connections stays safe and secure. These protocols also define how the network secures data from any attempts to review or extract said data by illegitimate means. This helps ensure that no unauthorized users, services, or devices access your network data, and this works across all data types and network mediums being used.
Usually, network security protocols rely on encryption and cryptography to secure data so that only special algorithms, formulas and logical keys can make this data accessible. Some of the most popular protocols for network security include Secure Socket Layer (SSL), Secure File Transfer Protocol (SFTP) and Secure Hypertext Transfer Protocol (HTTPS).
- SSL – A Secure Socket Layer (SSL) is a network security protocol primarily used for ensuring secure internet connections and protecting sensitive data. This protocol can allow for server/client communication as well as server/server communication. Data transferred with SSL is encrypted to prevent it from being readable.
- SFTP – Secure File Transfer Protocol (SFTP), as its name might suggest, is used to securely transfer files across a network. Data is encrypted and the client and server are authenticated.
- HTTPS – Secure Hypertext Transfer Protocol is the secure version of HTTP. Data sent between the browser and server are encrypted to ensure protection. Which Network
- Protocol Types are Right for You?
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