SNMP Trap Agent

Owned by Yeok Hong Ng (Deactivated)
Last updated: Mar 08, 2024
2 min read

The SNMP Trap agent is used to receive SNMP notifications (traps and informs) and convert them to UDRs.

Configuration

To open the SNMP Trap agent configuration dialog from a workflow configuration, you can do the following:

  • right-click the agent icon and select Configuration...
  • double-click the agent icon

SNMP Trap agent configuration dialog

In the agent configuration dialog, select the relevant SNMP Collection profile to use.

Resolving Trap OIDs

The SNMP Trap agent automatically resolves incoming trap OIDs based on MIB definitions from MIB files which are loaded into a profile. This is done for both parts of the notification identifier and the list of variable bindings of the trap. 

Changing the Port 162 Privileges

The standard SNMP trap port 162 is not accessible for  in, for instance, a Linux/Unix environment. Make sure to solve this issue. You can either do:

  • Setup port forwarding from 162 to a port that  can access using iptables.
  • Change the privileges for port 162, so non-root can access it.
     

Example - How to setup UDP port forwarding to forward all UDP datagrams from port 162 to port 5678

$ sudo iptables -t nat -A PREROUTING -i enp0s3 -p udp --dport 162 -j REDIRECT --to-port 5678

Replace enp0s3 with the proper network interface name. Use ifconfig to find out the name of your Ethernet interface (usually - eth0).