The common mistake is to configure snmpd for v3 and forget to disable snmp v1/v2. go to /etc/snmp/snmpd.conf and comment line with “com2sec notConfigUser  default       public” So full net-snmp installation and configuration should be something like: yum install -y net-snmp-utils net-snmp net-snmp-libs service snmpd status service snmpd stop net-snmp-create-v3-user -ro -A [password] -a MD5 -X snmpv3encPass -x DES snmpv3user comment line with “com2sec notConfigUser  default       public” service snmpd start configure PRTG or other monitoring tool chkconfig snmpd on snmptable -v 3 -u snmpv3user -l auth  Continue reading →{"id":1297,"date":"2018-12-23T13:43:38","date_gmt":"2018-12-23T05:43:38","guid":{"rendered":"https:\/\/www.itforce.mn\/?p=1297"},"modified":"2018-12-23T13:50:30","modified_gmt":"2018-12-23T05:50:30","slug":"snmp-and-prtg","status":"publish","type":"post","link":"https:\/\/www.itforce.mn\/index.php\/2018\/12\/23\/snmp-and-prtg\/","title":{"rendered":"SNMP and PRTG"},"content":{"rendered":"\n

The common mistake is to configure snmpd for v3 and forget to disable snmp v1\/v2.<\/p>\n\n\n\n

go to \/etc\/snmp\/snmpd.conf and comment line with <\/p>\n\n\n\n

“com2sec notConfigUser\u00a0 default\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 public”<\/p>\n\n\n\n

So full net-snmp installation and configuration should be something like:<\/p>\n\n\n\n

  1. yum install -y net-snmp-utils net-snmp net-snmp-libs<\/li>
  2. service snmpd status<\/li>
  3. service snmpd stop<\/li>
  4. net-snmp-create-v3-user -ro -A [password] -a MD5 -X snmpv3encPass -x DES snmpv3user<\/li>
  5. comment line with “com2sec notConfigUser\u00a0 default\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 public”<\/li>
  6. service snmpd start<\/li>
  7. configure PRTG or other monitoring tool<\/li>
  8. chkconfig snmpd on<\/strong><\/li>
  9. snmptable -v 3 -u snmpv3user -l auth\u00a0 -a MD5 -A [password] localhost usmUsertable<\/li>
  10. snmpwalk -u snmpv3user -A [password] -a MD5 -l authnoPriv 127.0.0.1 -v3 | head<\/li><\/ol>\n\n\n\n

    <\/p>\n","protected":false},"excerpt":{"rendered":null,"protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":["post-1297","post","type-post","status-publish","format-standard","hentry","category-it-governance"],"_links":{"self":[{"href":"https:\/\/www.itforce.mn\/index.php\/wp-json\/wp\/v2\/posts\/1297","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.itforce.mn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.itforce.mn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.itforce.mn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.itforce.mn\/index.php\/wp-json\/wp\/v2\/comments?post=1297"}],"version-history":[{"count":3,"href":"https:\/\/www.itforce.mn\/index.php\/wp-json\/wp\/v2\/posts\/1297\/revisions"}],"predecessor-version":[{"id":1310,"href":"https:\/\/www.itforce.mn\/index.php\/wp-json\/wp\/v2\/posts\/1297\/revisions\/1310"}],"wp:attachment":[{"href":"https:\/\/www.itforce.mn\/index.php\/wp-json\/wp\/v2\/media?parent=1297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.itforce.mn\/index.php\/wp-json\/wp\/v2\/categories?post=1297"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.itforce.mn\/index.php\/wp-json\/wp\/v2\/tags?post=1297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}