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NETWORKING, ping <ip> = sends a echo message to an host to check if…
NETWORKING
Data Packet - data packet is a small amount of data sent over a TCP/IP network.
Data sent over computer networks, such as the Internet, is divided into packets. These packets are then recombined by the computer or device that receives them
ADVANTAGES of using Packets:
can communicate with more devices simultaniously.
Packets consist of two portions: the header and the payload
The header contains information about the packet, such as its origin and destination IP addresses
The payload is the actual data
SSH - Secure Shell
sudo nano /etc/ssh/sshd_config = to do congfigrations in ssh
sudo service ssh restart = after making configurations
PROTOCOLS
UDP - User Datagram Protocol
UDP is faster but less reliable than TCP
can start sending data to another device
does not check about the receival status of data packets
TCP -Transmission Control Protocol
Starts Connection via a handshake
more reliable and secure.
Checks if packages were received successfully
SSH connection requires two components
Client
Server
OpenSSH client => to gain access to server.
ifconfig = show details of network configurations
ping <ip> = sends a echo message to an host to check if it's online.