Operation Manual

Cerberus P 6331-4A
30
Advanced Setup Tab
Firewall
Firewall – Select this option can automatically detect and block Denial of Service (DoS)
attacks, such as Ping of Death, SYN Flood, Port Scan and Land Attack.
SPI – Select this option to Enable or Disable the SPI feature. (NOTE: If you enable SPI, all
traffics initiate from WAN would be blocked, including DMZ, Virtual Server, and ACL WAN
side).