#04 Protocol and Port Number | Network Ports Explained | Port numbers in Networking with Demo
What is Protocol and Port Numbers
A protocol is a set of rules and guidelines for communicating data.
Port numbers are used to differentiate between different services or applications running on a device
Port numbers range from 0 to 65535
The Internet Assigned Numbers Authority (IANA) categorizes ports into three ranges:
Well-known ports (0-1023)
Registered ports (1024-49151)
Dynamic or private ports (49152-65535)
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Video Walk through🚶♀️🚶♀️
0:05 -Introduction
0:20 - What is a protocol
1:03 - What is a Port
3:37 - Ports number and Protocol
7:04 - Demo for SSH and Telnet
9:00 - Demo for DNS (Domain Name System)
Important port numbers:
Service name Port Number
FTP 21
SSH 22
Telnet 23
SMTP 25
DNS 53
TFTP 69
HTTP 80
HTTPS 443
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