User Guide - Kaspersky Lab

CHAPTER 12. PROTECTION
AGAINST NETWORK
ATTACKS
Today computers have become quite vulnerable when connected to the Internet.
They are subjected both to virus infections and to other types of attacks that take
advantage of vulnerabilities in operating systems and software.
The Kaspersky Internet Security Firewall component ensures your security on
local networks and the Internet, by protecting your computer at the network and
application levels, and masking your computer on the net to prevent attacks.
Let’s take a closer look at how Firewall works.
You are protected at the network level through global packet filtration rules, in
which network activity is allowed or blocked, based on an analysis of settings
such as: packet direction, the data transfer protocol for the packet, and the
outbound packet port. Rules for data packets establish access to the network,
regardless of the applications installed on your computer that use the network.