Igmp Proxy To Manage Multicast Traffic - D-Link DSR-250N User Manual

Unified Services Router
Block Multicast Packets: selecting this option drops multicast packets, which could
indicate a spoof attack, through or to the gateway.
DoS Attacks:
SYN Flood Detect Rate (max/sec): The rate at which the SYN Flood can be detected.
Echo Storm (ping pkts/sec): The number of ping packets per second at which the
router detects an Echo storm attack from the WAN and prevents further ping traffic
from that external address.
ICMP Flood (ICMP pkts/sec): The number of ICMP packets per second at which the
router detects an ICMP flood attack from the WAN and prevents further ICMP
traffic from that external address.

The ping on LAN interfaces is enabled in default. To disable the ping response from
LAN hosts to the LAN/WAN port of the device uncheck the "Allow Ping from LAN"
option.

5.13 IGMP Proxy to manage multicast traffic

Advanced > Advanced Network > IGMP Setup
IGMP snooping allows the router to 'listen' in on IGMP network traffic through the
router. This then allows the router to filter multicast traffic and direct this only to
hosts that need this stream. This is helpful when there is a lot of multicast traffic on
the network (say from an IPTV application) where all LAN hosts do not need to
receive this multicast traffic. Enabling IGMP snooping allows the router to regulate
the amount of multicast traffic on the network, to prevent flooding all LAN hosts.
Active IGMP snooping is referred to IGMP Proxy, and this is available on your
router.
108
User Manual