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4.2.7 Establishing connection – detection
The Personal firewall detects each newly‑created network connection.
The active firewall mode determines which actions are performed for
the new rule. If Automatic mode or Policy‑based mode is activated,
the Personal firewall will perform predefined actions with no user
interaction. The Interactive mode displays an informational window
which reports detection of a new network connection, supplemented
with detailed information about the connection. You can opt to allow
the connection or refuse (block) it. If you repeatedly allow the same
connection in the dialog window, we recommend that you create a
new rule for the connection. To do this, select the Remember action
option (Create rule) and save the action as a new rule for the Personal
firewall. If the firewall recognizes the same connection in the future, it
will apply the existing rule.
Please be careful when creating new rules and only allow connections
which are secure. If all connections are allowed, then the Personal
firewall fails to accomplish its purpose. These are the important
parameters for connections:
• Remote side: Only allow connections to trusted and known
addresses
• Local application: It is not advisable to allow connections for
unknown applications and processes
• Port number: Communication on common ports (e.g., web trac
– port number 80) should be allowed under normal circumstances
In order to proliferate, computer infiltrations often use the Internet
and hidden connections to help them infect remote systems. If rules
are correctly configured, a Personal firewall becomes a useful tool for
protection against a variety of malicious code attacks.
4.2.8 Logging
The ESET Smart Security Personal firewall saves all important events
in a log file, which can be viewed directly from the main menu. Click
Tools > Log files and then select ESET Personal firewall log from the
Log drop‑down menu.
The log files are an invaluable tool for detecting errors and revealing
intrusions into your system, and should be given appropriate
attention. ESET Personal firewall logs contain the following data:
• Date and time of event
• Name of event
• Source
• Target network address
• Network communication protocol
• Rule applied, or name of worm, if identified
• Application involved
• User
A thorough analysis of this data can help detect attempts to
compromise system security. Many other factors indicate potential
security risks and allow you to minimize their impact: too frequent
connections from unknown locations, multiple attempts to establish
connections, unknown applications communicating or unusual port
numbers used.
4.3 Antispam protection
Unsolicited email – called spam – ranks among the greatest problems
of electronic communication. It represents up to 80 percent of all
email communication. Antispam protection serves to protect against
this problem. Combining several ecient principles, the Antispam
module provides superior filtering.
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