Install snmpd from FreeBSD ports
cd /usr/ports/net-mgmt/net-snmp
make DEFAULT_SNMP_VERSION="2" NET_SNMP_SYS_CONTACT="mail@confighell.com" NET_SNMP_SYS_LOCATION="Confighell" install
Insert into /etc/rc.conf
snmpd_enable="YES"
snmpconf -g basic_setup
Do you want to configure the information returned in the system MIB group (contact info, etc)? (default = y): n
Do you want to configure the agent's access control? (default = y): y
Do you want to allow SNMPv3 read-write user based access (default = y): n
Do you want to allow SNMPv3 read-only user based access (default = y): y
Enter the SNMPv3 user that should have read-only access to the system: readuser
The minimum security level required for that user [noauth|auth|priv, default = auth]: noauth
The OID that this community should be restricted to [if appropriate]: <enter> (nothing)
Do another rouser line? (default = y): n
Do you want to allow SNMPv1/v2c read-write community access (default = y): n
Do you want to allow SNMPv1/v2c read-only community access (default = y): y
The community name to add read-only access for: read2user
The hostname or network address to accept this community name from [RETURN for all]: 127.0.0.1
The OID that this community should be restricted to [RETURN for no-restriction]: <enter> (nothing)
Do another rocommunity line? (default = y): n
Do you want to configure where and if the agent will send traps? (default = y): n
Do you want to configure the agent's ability to monitor various aspects of your system? (default = y): y
Do you want to configure the agents ability to monitor processes? (default = y): n
Do you want to configure the agents ability to monitor disk space? (default = y): n
Do you want to configure the agents ability to monitor load average? (default = y): n
Do you want to configure the agents ability to monitor file sizes? (default = y): n
mv snmpd.conf /usr/local/share/snmp/
Or simply echo into config file
echo "rocommunity read2user 127.0.0.1" >> /usr/local/share/snmp/snmpd.conf
Then run the daemon
/usr/local/etc/rc.d/snmpd start