DoS defense Setup Enable DoS Defense Enable SYN flood defense Threshold packets / sec Timeout sec Enable UDP flood defense Threshold packets / sec Timeout sec Enable ICMP flood defense Threshold packets / sec Timeout sec Enable Port Scan detection Threshold packets / sec Block IP options Block TCP flag scan Block Land Block Tear Drop Block Smurf Block Ping of Death Block trace route Block ICMP fragment Block SYN fragment Block Unassigned Numbers Block Fraggle Attack