60 Publication 2711C-UM001C-EN-P - September 2009
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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