Concerning to Kaspersky Internet Security 2011 Today computers
have become quite vulnerable when on the Internet. They are
subjected not only to virus infections but other types of
attacks as well that take advantage of vulnerabilities in
operating systems and software. Kaspersky Internet Security 2011
contains a special component, Firewall, to ensure your security
on local networks and the Internet. Firewall applies rules to
all network connections. A Firewall rule is either an allowing
or blocking action performed by Firewall once it detects a
connection attempt. Protection against various types of attacks
is performed on two levels: network and application. Protection
on the network level is performed by using global packet
filtration rules where network activity is allowed or blocked
based on analyzing settings such as packet direction, the data
packet transfer protocol, and the outbound packet port. Your
computer is protected on the application level by applying
application rules for using network resour