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NCast Presentation Recorder Reference Manual If the proxy server requires a username and password for access, enter the password. All changes to these network settings require a reboot of the unit. Press the “Update & Reboot” button when all entries are complete and you have double-checked the correctness of these entries. 7.3.15. SNMP – Simple Network Management Protocol The SNMP protocol is a widely used, industry standard protocol designed to monitor devices of all types (e.g. routers, servers, switches, PC's, etc.) on a network. Commercial and open-source tools (e.g. Nagios) are available to provide comprehensive reports on the health of units being monitored. Customers running multiple PR-HD encoders may benefit from the use of SNMP to track the availability and performance of their systems. The PR-HD agent supports protocol versions 1, 2c and 3. The following MIBs (Management Information Base) are included in this implementation: SNMPv2-MIB IF-MIB RFC1213-MIB IP-MIB IP-FORWARD-MIB TCP-MIB UDP-MIB HOST-RESOURCES-MIB DISMAN-EVENT-MIB NOTIFICATION-LOG-MIB For security reasons and to prevent unwanted use and probes of your network it is advised to change all the default settings in the SNMP configuration window to private, custom values. 7.3.16. Community String In Versions 1 and 2c of the protocol the community strings identified sets of resources to monitor and some of these resources could be “read-only” and some could be “read-write”. In most default installations of SNMP the community string “public” is read-only and returns limited, basic information about the system being monitored. Use of Version 1 or 2c protocol is considered to be insecure as clear-text is used and this is easily compromised. 7.3.17. Security Name In Version 3 a “Security Name” is similar to a username on other systems. It identifies an authorized user of the system. 7.3.18. Authentication Password Authentication is performed by using a user's authentication password to create an authentication key to sign the message being sent. The signing key is generated from a password that must be at least 8 characters in length. 7.3.19. Privacy Password NCast Corporation Revision 2.2 Page 62