CyberGuard SG300 User Manual page 182

Note
Enabling this automatically enables Access Control.
Check Virus check web downloads.
Check Reject overly large downloads to have the CyberGuard SG appliance treat
oversized downloads as potential viruses and reject them. The definition of an overly
large download is specified by the Maximum size field on the main Antivirus tab.
Click Submit.
FTP
The CyberGuard SG appliance can scan files downloaded using FTP for viruses.
Check Virus check FTP downloads.
Typically there is no need to change the Proxy port on which the transparent proxy
listens for connections.
If an FTP connection is idle for the number of seconds specified by No activity timeout,
it is automatically disconnected. Increase this only if you are experiencing timeouts
during FTP sessions.
178
Firewall