62 Publication 2711C-UM001I-EN-P - July 2014
Chapter 4 Cable Connections and Communication
Security Considerations
IGMP (Internet Group Management Protocol) is used for IPv4 multicast. A
multicast is communication between a single sender and multiple receivers on a
network. IGMP is used to exchange membership status data between IPv4
routers that support multicasting and members of multicast groups. A router is
an intermediary device on a communication network that expedites message
delivery by finding the most efficient route for a message packet within a
network, or by routing packets from one sub-network to another. A sub-network
is a separate part of an organization’s network identified through IP addressing.
PanelView Component terminals provide level 2 (full) support for IPv4
multicasting (IGMP version 2) as described in RFC 1112 and RFC 2236.
SNMP (Simple Network Management Protocol) is used for internal network
management and is not supported.
Ports 137 and 138 are normally open to support the NetBIOS protocol used by
Windows CE.NET similar to other Microsoft and IBM network operating
systems.
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