Glossary: Modern Vulnerabilities, Malware and Physical Attacks

Firewall

Also written: firewall rule

A device or service that allows or blocks network traffic by rules. Its logs often show beaconing, large uploads and other indicators, and Alex uses it to block bad addresses and ports.

Where the book teaches it

Chapter 2: Identity providers, mobile devices, misconfiguration and public storage
Chapter 3: Malware, part 1: ransomware, trojans, worms, spyware and adware
Chapter 4: Malware, part 2: viruses, rootkits, keyloggers, logic bombs and fileless malware

Related terms

Beaconing Port