When an IRC session is identified on any port, the countermeasures configured here are taken. "Check-Host-IP" indicates whether and on what routes the address transmitted in the DDC command should be checked against the source address of the IRC client.
- SNMP ID:
 - 2.8.10.20.2.4
 - Console path:
 - Setup > IP-Router > Firewall > Applications > IRC
 - Possible values:
 - No
 - Always
 - WAN
 - Default route
 
- Default:
 - Default route