Further reading

Vendors explain firewalls:

Cisco: https://www.cisco.com/c/en_uk/products/security/firewalls/what-is-a-firewall.html

Fortinet: https://www.fortinet.com/resources/cyberglossary/firewall.html

Checkpoint: https://www.checkpoint.com/definitions/what-is-firewall/

Palo Alto Networks: https://blog.fuelusergroup.org/from-first-gen-to-next-gen-the-evolution-of-the-firewall

OpenLearn - Introduction to cyber security
ou logoCreative Commons non-commercial share alike icon Except for third party materials and otherwise, this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence, full copyright detail can be found in the acknowledgements section. Please see full copyright statement for details.