User guide

SmartDefense Categories
Chapter 14: Using SmartDefense 495
In this field…
Do this…
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.
VoIP
Voice over IP (VoIP) traffic is subject to various threats, such as:
• Call redirections, in which calls intended for one recipient are redirected to
another
• Stealing calls, where the caller pretends to be someone else
• System hacking, using ports that were opened for VoIP connections
This category allows you to configure various protections related to VoIP protocols. It
includes the following:
• SIP on page 496
• H.323 on page 497