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SNMP stands for Simple Network Management Protocol. SNMP community strings also vary according to the SNMP version being used. SNMP trap – The SNMP trap community string is used when an SNMP trap is sent by a device.Read-write – The read-write community string is used to extract data and alter device configurations.Read-only – The read-only community string enables a device to extract read-only data from another device.There are three types of community string: The attacker could even gain knowledge of potential entry points they could exploit. If an attacker does gain access to your devices via the community string credentials, key network information will be exposed. With a poor default community string, your network is vulnerable to unauthorized access. Some vendors use the word “public” as the default, so it’s crucial users change the default community string to maintain device and network security.

This is why it’s important for the SNMP community string to be correct.Ī device will usually feature a default SNMP community string, which is dependent on the vendor responsible for the device.

If the community string is incorrect, the device will disregard the GET request. With the appropriate community string, a device is able to access data stored on other devices. A GET request, as its name suggests, is used to request data from a specific resource and is one of the most commonly utilized HTTP methods. Sometimes referred to simply as a community string or an SNMP string, it comprises the user credential-ID or password-delivered alongside a GET request. Get Started SNMP Monitoring What Is an SNMP Community String?Īn SNMP community string is a means of accessing statistics stored within a router or other device. How to Create and Configure SNMP Community Strings It will conclude with my in-depth feature review of the best SNMP monitoring tool currently on the market – SolarWinds ® Server & Application Monitor.

This guide will explain what an SNMP community string is, how to configure and create SNMP community strings, related best practices, and how the different SNMP versions cause community string variations. If you don’t have the appropriate community string, you’ll be unable to access key device information across your network. When it comes to ensuring SNMP security, SNMP community strings are of vital importance.