User's Manual Part 2

Using SmartDefense
254 Check Point Safe@Office User Guide
In this field… Do this…
Enforce IGMP to
multicast addresses
According to the IGMP specification, IGMP packets must be sent to
multicast addresses. Sending IGMP packets to a unicast or broadcast
address might constitute and attack; therefore the Safe@Office appliance
blocks such packets.
Specify whether to allow or block IGMP packets that are sent to non-
multicast addresses, by selecting one of the following:
• Block. Block IGMP packets that are sent to non-multicast
addresses. This is the default.
• None. No action.
Peer to Peer
SmartDefense can block peer-to-peer traffic, by identifying the proprietary
protocols and preventing the initial connection to the peer-to-peer networks. This
prevents not only downloads, but also search operations.
This category includes the following nodes:
• KaZaA
• Gnutella
• eMule
• BitTorrent
Note: SmartDefense can detect peer-to-peer traffic regardless of the TCP port being
used to initiate the session.