Currently, three versions of SNMP are available: v1, v2c and v3. SNMPv3 adds some additional features, including authentication and encryption schemes (e.g., MD5, SHA, AES and DES). This makes SNMPv3 more secure and advisable while you run SNMP queries over the Internet. This tutorial describes how to configure SNMPv3 in Ubuntu, CentOS and Cisco hardware.
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