User manual

Reference: Configuration options
Avira Professional Security - User Manual (Status: 14 Dec. 2012) 145
 Default adapter: LAN or high-speed Internet
 Wireless
 Dial-up connection
From the adapter's context menu (in the Generic adapter rules window, right-click My
Computer or Default, Wireless, Dial-up, etc) you can specify predefined adapter rules for
each available adapter:
 Set security level Low
 Set security level Medium
 Set security level High
You also have the option of modifying individual adapter rules to suit your own particular
requirements.
Note
The default security level setting for all predefined rules of the Avira FireWall is
Medium.
 ICMP protocol
 TCP Port Scan
 UDP Port Scan
 Incoming rules
 Incoming IP protocol rule
 Outgoing rules
 Buttons to manage the rules
ICMP protocol
The Internet Control Message Protocol (ICMP) is used to exchange error and information
messages on networks. The protocol is also used for status messages with ping or tracer.
With this rule, you can define the incoming and outgoing blocked message types, the
behavior in case of flooding and the reaction to fragmented ICMP packets. This rule
serves for preventing so-called ICMP flood attacks, which results in an increase of the
CPU load of the attacked machine as it responds to every packet.
Predefined rules for the ICMP protocol