2.7.6.2 SNMPv3 Access Control

SNMPv3 access control differs from the access control defined by versions 1 and 2, in that it is based on contexts and user names, rather than on IP addresses and community strings. The configuration for SNMPv3 access control is located in a text file, called the user ACL file. See the Java Dynamic Management Kit 5.1 Tutorial for information about the user ACL file and how to configure it.

When managers send a requests to an agent, the agent authenticates and, if necessary, decrypts the request, as explained earlier. It then passes the request through SNMP context-checking filters to determine whether it is authorized.