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SonicOS Enhanced 4.0 Administrator Guide
Access Rule Service Options
Force inbound and outbound FTP data connections to use default port 20 - The default
configuration allows FTP connections from port 20 but remaps outbound traffic to a port such
as 1024. If the check box is selected, any FTP data connection through the security appliance
must come from port 20 or the connection is dropped. The event is then logged as a log event
on the security appliance.
IP and UDP Checksum Enforcement
• Enable IP header checksum enforcement - Select this to enforce IP header checksums.
• Enable UDP checksum enforcement - Select this to enforce IP header checksums.
UDP
Enter the number of seconds of idle time you want to allow before UDP connections time out in
the Default UDP Connection Timeout (seconds) field. This value is overridden by the UDP
Connection timeout you set for individual rules.