On Linux, /var/log/messages may continuously show these useless verbose snmpd messages: Mar 2 17:51:20 ddsrpcorebt snmpd[14592]: Received SNMP packet(s) from 10.112.34.171 Mar 2 19:01:18 ddsrpcorebt snmpd[14592]: Received SNMP packet(s) from 10.112.34.171 Mar 2 19:06:18 ddsrpcorebt snmpd[14592]: Received SNMP packet(s) from 10.111.75.52 Mar 2 20:11:24 ddsrpcorebt snmpd[14592]: Received SNMP packet(s) from 10.112.34.171 Mar 2 21:21:31 ddsrpcorebt snmpd[14592]: Received SNMP packet(s) from 10.112.34.171 The way to turn it off highly depends on the version of snmpd (`/usr/sbin/snmpd -v') and Linux distribution, because each may have their config and/or command line options file located in different places. Unless you're fine turning off snmpd, the systematic way to suppress these verbose messages is: Find where the command line options file (usually called snmpd.options) is in /etc/init.d/snmpd, because no matter what, this is the very script that starts the daemon. In Red Hat 5, edit or create snmpd.options and add OPTIONS="-Lf /dev/null -p /var/run/snmpd.pid -a" Make sure you do NOT have -Lsd; with that, -Lf /dev/null would NOT function! Whether you need other options including -a is up to you. You can compare with the options of the currently running daemon: ps -ef | grep [s]nmpd The important part is -Lf /dev/null, sending all logs to the bit bucket. Then bounce the daemon: service snmpd restart In Red Hat 6, /etc/init.d/snmpd points to /etc/sysconfig/snmpd instead of snmpd.options. So vi /etc/sysconfig/snmpd and do the same, i.e. remove "-LS0-6d" from OPTIONS. Some discussion at: http://www.stat.auckland.ac.nz/~kimihia/net-snmp Create /etc/snmp/snmpd.options and add OPTIONS="-Lf /dev/null -p /var/run/snmpd.pid" Restart daemon: service snmpd restart If /var/log/messages now says: Feb 22 11:37:29 dctrpcora1a setroubleshoot: SELinux is preventing the snmpd from using potentially mislabeled files (/etc/snmp/snmpd.conf). For complete SELinux messages. run sealert -l 3365ff05-df43-42ec-93c4-fd8a1c6ea455 Feb 22 11:37:29 dctrpcora1a setroubleshoot: SELinux is preventing the snmpd from using potentially mislabeled files (./snmpd.conf). For complete SELinux messages. run sealert -l 4ffb3013-9aa5-4e58-81c1-fa999f8eb79a vi /etc/sysconfig/selinux and changed SELINUX to disabled and reboot. http://raetsel.wordpress.com/2008/02/15/snmpd-filling-up-varlogmessages/