Zoom 4420-A - Manual (Page 55)

Chapter 6. Firewall Settings 55
Parameter Select or enter . . .
UDP Bomb Select this check box to defend against an
attack which overloads the operating system
and makes the target device difficult or
impossible to use.
UDP Echo
Chargen Select this check box to defend against an
attack on UDP ports 7 and 19 involving large
numbers of ECHO and CHARGEN requests.
Select All Click to select all types of attacks listed.
Clear All Click to clear all selected types of attack.
Enable Source IP
Blocking Select this check box to block all packets
coming from a source IP address.
Block Time Enter the number of seconds during which all
traffic from a source IP address will be
blocked.
Apply Changes Click to save your entries.