NETWORK COMPONENTS (OBJ 1.2)

Clients

Devices that users access the network with

Servers

Provide resources to the network

Hubs

Older network devices that connect other devices like clients and servers over a local area network

Has limitations such as increased network errors due to their broadcasting nature

Hubs

Switches

Smarter hubs that provide more security and more efficient bandwidth utilization

Only forward traffic from one port to the intended destination port , this helps avoid unnecessary broadcasting of your data over the network

Switches

WAPs

Wireless Access Points

APs

Access Points

Wireless Access Points (WAPs/APs)

Allow wireless devices to connect to a wired network

Broadcast data over a radio frequency wave instead of copper or fiber cable

Access Points

Routers

Used to connect different networks together

Relies on the Internet Protocol to route the traffic across the network,

Routers

Firewalls

Security carries between internal networks and the external world (usually the Internet)

Monitors and controls incoming and outgoing network traffic based upon predetermined security rules by using access control lists

Firewalls

Load Balancers

Devices or software that distribute network or application traffic across millions servers

Proxy

Acts as a intermediary between and users device and the Internet

Provides functionality’s like

Web filtering, shared network connections,data caching, enhanced security and privacy by hiding users real IP address and limiting exposure to the internet.

Proxies

IDS

Intrusion Detection Systems

IPS

Intrusion Prevention Systems

Intrusion Detection System (IDS)

Detect unauthorized access it anomalies and alert administrators

Intrusion Prevention Systems (IPS)

Not only detect threats , but also take action to prevent intrusion.

SDN

Software Defined Networking

Controllers

In SDN context, these are central units used to manage flow control to networking devices

NAS

Network Attached Storage

Network Attached Storage Device

Dedicated file storage system that provides data access to a heterogeneous group of clients

SAN

Storage Area Network

Storage Area Network (SAN)

High-Speed network that provides access to to consolidated block level data storage

Media

In networking , it refers to the physical materials used to transmit data

Wide Area Network (WAN) Link

Used to connect networks over large geographical areas