SNMP traps via Minion not working

Hello All,



I'm having trouble setting up SNMP traps using Minion.



The Minion is setup and OpenNMS can query SNMP and is able to get the SNMP
information out of the systems that are monitored.



The problem is that the Minion doesn't seem to get the SNMP traps on
127.0.0.1:1162. When I tcpdump the ens160 interface (Centos7) I can see the
traps coming in on port 162. But when I do a tcpdump of the lo interface I
do not see any data coming in on port 1162.



The Minion (Java) is listening on port 1162 and firewalld rules are setup:



public (active)

  target: default

  icmp-block-inversion: no

  interfaces: ens160

  sources:

  services: dhcpv6-client ssh

  ports: 514/tcp 162/udp 514/udp 162/tcp

  protocols:

  masquerade: yes

  forward-ports: port=514:proto=udp:toport=1514:toaddr=127.0.0.1

        port=162:proto=udp:toport=1162:toaddr=127.0.0.1

        port=514:proto=tcp:toport=1514:toaddr=127.0.0.1

        port=162:proto=tcp:toport=1162:toaddr=127.0.0.1

  source-ports:

  icmp-blocks:

  rich rules:



I even tried to setup firewalld on lo but that doesn't work either:



trusted (active)

  target: ACCEPT

  icmp-block-inversion: no

  interfaces: lo

  sources:

  services:

  ports: 1162/udp 1162/tcp 1514/udp 1514/tcp

  protocols:

  masquerade: no

  forward-ports:

  source-ports:

  icmp-blocks:

  rich rules:



I think it's an CentOS issue somewhere... But I just can't find the
problem...



If someone can help me with this it would be awesome!



Best regards,

-- 

Marc D.

Real is just a matter of perception

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