McAfee firewall 4.0 User Manual
Product Guide
35
4
McAfee Firewall Configurations
Overview
The configuration of McAfee Firewall is divided into two classifications –
application (program) and system. Upon installation, a base set of rules for
system services such as ICMP, DHCP and ARP are installed (these are
considered default settings).
application (program) and system. Upon installation, a base set of rules for
system services such as ICMP, DHCP and ARP are installed (these are
considered default settings).
On the other hand, the programs classification is personalized. Whenever you
run a new program that attempts to communicate over the Internet, McAfee
Firewall will prompt and ask you whether you want to trust the program or
not.
run a new program that attempts to communicate over the Internet, McAfee
Firewall will prompt and ask you whether you want to trust the program or
not.
For example, using Internet Explorer, enter an Internet address or URL (i.e:
http://www.mcafee-at-home.com) in the address bar of your browser and
press ENTER. Internet Explorer will attempt to connect to that URL over the
Internet. The first time you do this, McAfee Firewall prompts if you “trust”
Internet Explorer. If you say “Yes,” McAfee Firewall notes Internet Explorer is
allowed and whenever you use Internet Explorer in the future, McAfee
Firewall will allow its traffic.
http://www.mcafee-at-home.com) in the address bar of your browser and
press ENTER. Internet Explorer will attempt to connect to that URL over the
Internet. The first time you do this, McAfee Firewall prompts if you “trust”
Internet Explorer. If you say “Yes,” McAfee Firewall notes Internet Explorer is
allowed and whenever you use Internet Explorer in the future, McAfee
Firewall will allow its traffic.
As you allow programs to use the Internet, McAfee Firewall “learns” the rules
you are creating for the program and saves them for future use. If a Trojan
horse program attempts to communicate out from your computer, McAfee
Firewall will also prompt you whether you trust them or not, and the decision
to block the Trojan horse program from communicating is easy and
instantaneous.
you are creating for the program and saves them for future use. If a Trojan
horse program attempts to communicate out from your computer, McAfee
Firewall will also prompt you whether you trust them or not, and the decision
to block the Trojan horse program from communicating is easy and
instantaneous.