User manual
Table Of Contents
- Introduction
- AVG Installation Requirements
- AVG Installation Process
- After Installation
- AVG User Interface
- AVG Components
- My Apps
- AVG Security Toolbar
- AVG Do Not Track
- AVG Advanced Settings
- Firewall Settings
- AVG Scanning
- AVG Updates
- Event History
- FAQ and Technical Support
A V G Internet Security 201 2 © 2012 C opyright A V G Technologies C Z, s.r.o. A ll rights res erved. 14 7
The Intrusion Detection System (IDS) settings dialog offers these configuration options:
Block (Port scan and ARP attacks) attackers for defined time period - here you can
specify for how many seconds a port be blocked, whenever a suspicious communication
attempt is detected on it. By default, the time interval is set to 1800 seconds (30 minutes).
Block Port Scan (on by default) – check the box to block communication attempts over all
TCP and UDP ports coming to the computer from outside. For any such connection, five
attempts are allowed, and the sixth is blocked. The item is turned on by default, and it is
recommended that you keep this setting. If you keep the Block Port Scan option on, some
further detailed configuration is available (otherwise, the following item will be deactivated):
o Black Port Scan – check the box to immediately block any communication
attempts over ports specified in the text field below. Individual ports or port ranges
should be divided by commas. There is a predefined list of recommended ports
should you wish to use this feature.
o Currently blocked attackers - this section lists any communication attempts that
are currently being blocked by the Firewall. The complete history of blocked attempts
can be viewed in the Logs dialog (Port scan logs tab).
Block ARP attacks (advanced) (off by default) - mark this option to activate blocking of
special kinds of communication attempts inside a local network detected by IDS as
potentially dangerous. The time set in Block attackers for defined time period applies.
We recommend that only advanced users, familiar with the type and risk level of their local
network, use this feature.
Control buttons
Refresh list - press the button to update the list (to include any latest blocked attempts)
Remove - press to cancel a selected blocking
Extend timeout - press to prolong the time period for which a selected attempt is blocked.
A new dialog with extended options will appear, allowing you to set a specific time and
date, or unlimited duration.