Web Manager for Administrators > Configuration>Network>Firewall Configuration > Firewall Configuration: REJECT Target

Firewall Configuration: REJECT Target
If REJECT is selected from the Target pull-down menu, the following pull-down menu appears
Firewall Configuration “Add Rule” and “Edit Rule” REJECT Target Menu Options
Any “Reject with” option causes the input packet to be dropped and a reply packet of the specified type to be sent.

Web Manager for Administrators > Configuration>Network>Firewall Configuration > Firewall Configuration: REJECT Target