SNMPv3

GLOBAL SERVICE CONFIG

# install service
    apt install snmpd
#stop service
    systemctl stop snmpd
#create user
    net-snmp-create-v3-user [-ro] [-A authpass] [-a MD5|SHA] [-x privpass][-X DES|AES] [username] #options
    net-snmp-create-v3-user -ro -A STrP@SSWRD -a SHA -X STr0ngP@SSWRD -x AES snmpro #example
#start service
    systemctl start snmpd
#check port 161 (default)
    netstat -plutn |grep :161