User Guide - Kaspersky Lab

142 Kaspersky Internet Security 7.0
12.1.1.1. Selecting Security Level
When you use the network, Kaspersky Internet Security protects your computer
at one of the following levels (see Figure 47):
Block all – blocks any network activity on your computer. If you select this
security level, you will not be able to use any network resources or
programs that require a network connection. We recommend that you
only select this level in the event of a network attack or when using a
dangerous network on an insecure connection.
Figure 47. Selecting an Firewall security level
High Security – a security level which allows only network activity for which
an allow rule exists. Firewall uses preconfigured and user-defined rules.
The set of rules included with Kaspersky Internet Security includes
allow rules for applications whose network activity is not suspicious, and
for data packets that are absolutely safe to send and receive. However,
if there is a block rule with a higher priority than the allow rule, the
program will block the network activity of that application.
Warning!
If you select this security level, any network activity not recorded in
an Firewall allow rule will be blocked. Therefore we recommend only
using this level if you are certain that all the programs you need are
allowed by the rules to make network connections, and that you do
not plan on installing new software.
Training mode – security level where Firewall rules are created. At this
level, whenever a program attempts to use a network resource, Firewall
checks to see if there is a rule for that connection. If there is a rule,
Firewall applies it. If there is no rule, a message will appear on the
screen, containing a description of the network connection (what
program initiated it, what port, the protocol, etc.). You must decide
whether to allow this connection or not. Using a special button in the
message window, you can create a rule for that connection, so that in