ABSTRACT

Personal firewalls are often associated with (and were ori-

ginally designed for) home PCs connected to “always-on”

broadband Internet connections. Indeed, the term personal

firewall is itself a vestige of the product’s history: originally

distinguished from enterprise firewalls, personal firewalls

were initially viewed as a way to protect home PCs.[1] Over

time, it was recognized that personal firewalls had other

uses. The security community began to talk about using

personal firewalls to protect notebooks that connect to the

enterprise LAN via the Internet and eventually protecting

notebooks that physically reside on the enterprise LAN.