Managing Server Firewalls
Firewall concepts
About nftables, features, and advantages of firewalld.
Firewalld components, pre-defined zones.
How packet flows through the firewall.
Check firewalld services - Lab Session.
Adding and Removing Services & Port from Firewall Server - Lab Session.
Add Services Permanently in Firewalld - Lab Session.
Add HTTP Service in firewalld - Lab Session.
Port forwarding - Lab Session.
Conceptual discussion about Masquerading, Packet Flow in Firewalld.
Masquerading with Port Forwarding - Lab Session.
About Rich Rules in Firewalld.
Specifically allow a Server using Rich Rules - Lab Session.
Allow Telnet Port, SSH with log prefix using Rich Rule - Lab Session.
Accept, Reject, Drop - Lab Session.

Homepage

https://www.skillshare.com/classes/Linux-Managing-Server-Firewalls/1669538092