Some methods currently used to monitor unmanned remote sites are not very practical, and could result in potential threats being ignored. As the equipment used in sites have evolved and become more complex, it is not enough to simply monitor the equipment; we should also pay attention to aspects of the surrounding environment such as temperature, humidity, airflow, power, and smoke.
To enhance onsite security and monitor equipment status at remote infrastructures, some IT administrators have used an alternative way for environmental monitoring that incorporates network management software (NMS) with a proprietary SCADA system. However, due to lack of functionality and interoperability with other systems, these solutions were costly and generated complex management implementations. Using a multitude of management systems and network-related commands made
managing and maintaining these systems extremely difficult. In addition, IT administrators also needed to take the time to learn a totally different protocol such as Modbus.
What are the benefits of SNMP environmental monitoring devices?
As the world continues to advance and business efficiency becomes more and more dependent on connected computer systems, ensuring the reliability, performance, and security of the monitoring devices has become absolutely necessary. What are the benefits of using SNMP environmental monitoring devices?
- Cost savings and easy integration with an existing NMS
Normally, integrating a non-IT system into an IT system will increase the overhead on processing and network elements, but by using an SNMP-supported environmental monitoring device, IT administrators can quickly and painlessly integrate these SNMPsupported devices into their existing NMS. And because it uses the same protocol, IT administrators would not need to spend much time to familiarize themselves with network monitoring extensions after integration, and the process will not increase the amount of overhead.
Integrating the environmental monitoring system under a single SNMP platform will not only enable growth and platform independence, but will also allow the entire system to be controlled by a single, centralized NMS. While larger IP networks may require SNMP proxies to minimize WAN-based SNMP traffic, the reduction in the number of NMSs compared to other alternatives will enable IT to focus on other issues and to simplify the management network.
- Fast response with event-driven monitoring system for your assets
Implementing an effective environmental monitoring system to protect these remote sites will drastically reduce the workload of the administrator to manually monitor the condition at individual remote site. SNMP trap is event driven, allowing the administrator to custom define alarm traps, which the administrators can respond to immediately in response to abnormal or critical events. The ability of the system to inform an NMS, and ultimately the administrator, of the safety conditions, will result in an increase in remote site safety and reduction in system failure.
- Privacy/security issues resolved with SNMPv3 encryption
By and large, administrators need a functioning network management protocol even when major portions of the network and its services are impaired. With SNMPv3’s incorporated security and administration mechanisms, SNMPv3 is able to work independently of any other network services for the secure transmission of SNMP messages.
With SNMPv3, administrators are protected from the following threats:
- Masquerade (data origin authentication): interloper assumes the identity of a sender to gain its privileges.
- Modification of information (data integrity): alteration of in-transit messages.
- Modification of message stream: messages are re-ordered, delayed, or replayed
- Disclosure (data confidentiality): privileged information is obtained via eavesdropping on messages.
Data from SNMP devices can be collected securely without fear of tampering or corruption. Confidential information such as SNMP Set command packets that change a router’s configuration can be encrypted to prevent the information from being exposed on the network.
Moxa’s Click&Go™ offers value-added user-control capability
In addition to these benefits, Moxa also offers its patented programming tool—Click&Go™. Moxa’s Click&Go™ control logic grants administrators unparalleled control over the behavior of their I/O devices, without involving third-party development tools or complex code. With Moxa’s Click&Go™, various user-defined events can be configured through the intuitive IF-THEN-ELSE logic for local control to send various types of alarms, including TCP/UDP messages, emails, SMS messages, and SNMP traps. For example, to configure a fire alarm, just select “IF” DI fire alarm is ON “THEN” DO buzzer ON “ELSE” DO buzzer OFF. And then click, click, click, you’re done.
Programming-free Click&Go I/O Control Logic
The traditional disadvantage of using SNMP traps is the limitation of the information conveyed. With only seven standard trap numbers available in SNMP, it can be difficult to tell what is happening just by looking at the traps. Moxa’s Click&Go™ gives the users the flexibility of defining SNMP trap formats, which allows variable binding, and adds more information to each SNMP trap. For example, an SNMP trap that is triggered when a door sensor is tripped can include the message ““Intrusion Alert,” plus date, time, and server name.”
User Definable SNMP Trap Content