Uploaded June 2022 | Updated September 2026, 1 week ago

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In this video we'll cover what network ports are. What does incoming and outgoing traffic mean. Different commands to view the port configuration. What happens during port exhaustion. Basics about TCP/UDP protocols and port security.
#network #tcp
https://itvraag.nl

Timestamp:
0:00 Intro
0:24 Network ports basics
0:55 Network ports advantages
1:31 Network port types
1:53 Well-known ports
2:22 Registered ports
2:44 Defined ports
2:56 Dynamic ports
3:34 Incoming/Outgoing traffic
4:07 Inbound traffic
4:38 Outbound traffic
4:55 Port examples
6:33 Reassigning ports
7:28 Network port security
7:49 Telnet
8:22 Netstat / SS
9:33 Port Exhaustion
9:58 Port Protocols: TCP/UDP
10:42 nmap
11:30 /etc/services
12:02 Firewall rules

Related video:
Network #1 - Ping everything: youtu.be/wRDgFFrmdJo
Vagrant - SSH timeout fix: youtu.be/k5ZE2UMFzqg
APT Package manager: youtu.be/ZKPs-rnG6E0
DNF Package manager: youtu.be/T5QMnvHie0M
WSL2: youtu.be/9Ev2NKLHcvs

Used links:
networkencyclopedia.com/well-known-port-numbers

Used commands:
telnet localhost 22
netstat -an
netstat -an | findstr 443
sudo apt install nmap
nmap -Pn localhost