Igmp - Draytek Vigor 110 User Manual

The reminder as regards concern about Firewall and UPnP:
Can't work with Firewall Software
Enabling firewall applications on your PC may cause the UPnP function not working
properly. This is because these applications will block the accessing ability of some
network ports.
Security Considerations
Activating the UPnP function on your network may incur some security threats. You
should consider carefully these risks before activating the UPnP function.
Some Microsoft operating systems have found out the UPnP weaknesses and
hence you need to ensure that you have applied the latest service packs and
patches.
Non-privileged users can control some router functions, including removing and
adding port mappings.
The UPnP function dynamically adds port mappings on behalf of some UPnP-aware
applications. When the applications terminate abnormally, these mappings may not be
removed.
3 . 5 . 4 I G M P
3 . 5 . 4 I G M P
IGMP is the abbreviation of Internet Group Management Protocol. It is a
protocol which is mainly used for
multicast groups. For invoking IGMP Snooping function, you have to check the
Enable IGMP Proxy box first for activating the IGMP proxy function.
Enable IGMP Proxy
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managing the membership of Internet Protocol
Check this box to enable this function. The application of multicast
will be executed through WAN port.
communication
Vigor110 User's Guide