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SNMP - Simple Network Management Protocol SNMP is a management tool used to monitor and control remote network devices. It can be used to poll specific information from the agent. SNMP must be installed on a Windows NT computer to enable Performance Monitor to monitor TCP/IP activity to and from your computer. An SNMP community is a functional group of SNMP agents and managers. Agents receive requests and report information to the SNMP managers for the communities the agent belongs to. An SNMP trap is an alert that, under predefined conditions or thresholds, the SNMP agent sends to the SNMP manager. Security - Send Authentication Trap - sends a message to the trap destinations if it receives   a request with an incorrect community name. - Only Accept SNMP packets from these hosts - allows agent to accept only packets    from defined hosts. Defined hosts are known by either their IP or IP. 13-02-2002: read the following article at www.cert.org : click here More information about SNMP you will find in the below RFC's RFC 3000 Internet Official Protocol Standards RFC 1212 Concise MIB Definitions RFC 1213 Manag.mnt Inform. Base for Network Management of TCP/IP-based Internets: MIB-II RFC 1215 A Convention for Defining Traps for use with the SNMP RFC 1270 SNMP Communications Services RFC 2570 Introduction to Version 3 of the Internet-standard Network Management Framework RFC 2571 An Architecture for Describing SNMP Management Frameworks RFC 2572 Message Processing and Dispatching for the SNMP RFC 2573 SNMP Applications RFC 2574 User-based Security Model (USM) for version 3 of the SNMP (SNMPv3) RFC 2575 View-based Access Control Model (VACM) for the SNMP RFC 2576 Coexistence between Ver 1, Ver 2, and Version 3 of the Internet-standard Network Management Framework