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If you are having trouble receiving traps from devices configured to send traps to your Orion server, verify that both SNMP Trap Service and SolarWinds Trap Service are running, the traps receiving port is set correctly, and that the traffic is not blocked by any firewall.
By default, SNMP traps are received by the SolarWinds Trap service that listens on UDP port 162. If traps are sent to a different port, change the traps receiving port.
To change the port for receiving Traps, open the file
SWTrapService.exe.config with a text editor and provide the new port number in the value field of the following line:
<add key="TrapPort" value"162" />
The default location for
SWTrapService.exe.config is C:\Program Files\SolarWinds\Orion\