User manual

FAQ, Tips
Avira Professional Security - User Manual (Status: 14 Dec. 2012) 65
To avoid this behavior do the following:
Go to Control Center and select the section INTERNET PROTECTION > FireWall.
Click the Configuration button.
The Configuration dialog box is displayed. You are in the configuration section
Application rules.
Activate the Expert mode option.
Select the configuration section Adapter rules.
Click add rule.
Select UDP in the section Incoming rules.
Type the name of the rule in the Section Name of the rule.
Click OK.
Check if the rule is directly above the rule Deny all IP packets.
Warning
This rule is potentially dangerous because it will allow UDP packets without any
filtering! After working with the virtual machine change to your previous security
level.
Virtual Private Network (VPN) Connection is blocked, if the security level of Avira
FireWall is set to medium or high.
Reason: By default, all packets that do not comply with the pre-set rules are discarded.
Packets dispatched by the VPN software (so-called GRE packets) do not fit into any of the
other categories and are therefore filtered by these rules.
Add the rule Allow VPN connections in the Adapter rules of the Avira FireWall
Configuration. This rule will allow all VPN related packets.
An email sent via a TLS connection has been blocked by Mail Protection.
Reason: Transport Layer Security (TLS: encryption protocol for data transfers on the
Internet) is not supported by Mail Protection at this time. The following options are
available for sending the email:
Use a port other than port 25, which is used by SMTP. This will bypass monitoring by
Mail Protection.
Turn off the TLS encrypted connection and disable TLS support in your email client.
Disable (temporarily) the monitoring of outgoing emails by Mail Protection in the
configuration under Mail Protection > Scan.