Rockwell Automation 2711P PanelView Plus Terminal User Manual - Manual (Page 237)

Publication 2711P-UM001J-EN-P - November 2009 237
Appendix
E
Security Considerations
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.
Port 80 is open when the Web server is optionally installed from the
PanelView Plus extensions. Otherwise, Port 80 is normally closed.
The FTP server permits a remote computer to run arbitrary commands
and read/write files. The FTP server is optionally installed from the
VersaView extensions. Otherwise, there is no FTP server on the
system.
Simple Network Management Protocol (SNMP) is not supported.
Internet Group Management Protocol (IGMP) 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 subnetwork
to another. A subnetwork is a separate part of an organization’s
network identified through IP addressing.
PanelView Plus CE terminals provide level 2 (full) support for IPv4
multicasting (IGMP version 2) as described in RFC 1112 and RFC 2236.
Security requires a comprehensive application of policies and
technology, and an awareness of security needs and potential
vulnerabilities. You may also want to consult with Rockwell GMS
Network Services for additional assistance.