Lec1: Network Devices & Security

Routers

Connects multiple devices to a network, allowing them to communicate, and directs data packets between them.

Switches

Connects multiple devices on a single network, controlling the flow of data to the correct destination.

Access Points (AP)

Facilitates wireless devices connecting to a wired network.

Servers

A computer or system that provides resources, data, services, or programs to other computers (clients) over a network

Accessing Network Devices (CLI)

• SSH (Secure Shell)

• Telnet

• Console Access

SSH (Secure Shell)

A secure and encrypted protocol for remote access, offering a secure alternative to Telnet.

Telnet

An older, unencrypted protocol for remote access, less secure than SSH.

Console Access

Direct physical connection to the device's console port for configuration and troubleshooting.

Accessing Network Devices (GUI)

• HTTPS (Web Interface)

• Remote Desktop Protocol

HTTPS (Web Interface)

Accessing the device's management interface through a web browser, often using HTTPS for secure communication.

Remote Desktop Protocol

A protocol for connecting to a remote computer's desktop, allowing for graphical control.

Firewalls

A network security device that monitors and filters incoming and outgoing network traffic based on an organization's previously established security policies.

Firewall

Essentially the barrier that sits between a private internal network and the public Internet.