This is an animated video explaining what a network firewall is.
A firewall is a system that is designed to prevent unauthorized access from entering a private network by filtering the information that comes in from the internet.
A firewall blocks unwanted traffic and permits wanted traffic.
https://www.cisco.com/c/en/us/products/security/firewalls/what-is-a-firewall.html
What is a network topology? Network topologies is the layout of how a network communicates with different devices. In this video we discuss the star, bus, ring, mesh, ad hoc, infrastructure and wireless mesh topologies.
What are VLANs? This is an animated video explaining what a VLAN is and how it works. Virtual local area network.
POP3 vs IMAP – What is POP and IMAP? How does email work? This is an animated video explaining the difference between POP and IMAP. These are email protocols that are used to retrieve email Read more…