simple snmp
Posted April 4, 2007
Install the net-snmp software.
cd /usr/ports/net-mgmt/net-snmp
make install
Add firewall rules to prevent anyone other than you from communicating with your snmp daemon. If you're running mrtg at 1.2.3.4:
ipfw add 11 deny udp from me snmp to not 1.2.3.4
ipfw add 11 deny udp from not 1.2.3.4 to me snmp
ipfw add 11 deny udp from any to me smux
Create a configuration file in /usr/local/etc/snmpd.conf.
rocommunity public
Enable snmpd in /etc/rc.conf.
snmpd_enable="YES"
snmpd_conffile="/usr/local/etc/snmpd.conf"
Start snmpd.
/usr/local/etc/rc.d/snmpd.sh start
Make sure it's running.
tail /var/log/snmpd.log
netstat -an|grep '*.161'
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