lACL-based Packet Filtering
pAn ACL defines rules that are used to filter IP packets. The SE1000 matches IP packets with the rules and discards the packets (for example, call packets initiated by unauthorized users) that do not conform to the rules.

lDoS/DDoS Attack Defense
pThe SE1000 identifies, classifies, and filters out IP attack packets at the edge of the enterprise internal network. After identifying attack packets, the SE1000 discards them and counts the number of attack packets. When the number of attack packets reaches a specified threshold, the SE1000 generates an IP layer attack defense alarm
