SNMP Proxy

If you have machines that you want to monitor but are not reachable directly, you can use SNMPD Proxy. This will use the reachable SNMPD to proxy requests to the unreachable SNMPD.

Example configuration

We want to poll unreachable.example.com via hereweare.example.com. Use the following config:

On hereweare.example.com:

        view all included .1
        com2sec -Cn ctx_unreachable readonly <poller-ip> unreachable
        access MyROGroup ctx_unreachable any noauth prefix all none none
        proxy -Cn ctx_unreachable -v 2c -c private unreachable.example.com  .1.3

On unreachable.example.com:

        view all included .1                               80
        com2sec readonly <hereweare.example.com ip address> private
        group MyROGroup v1 readonly
        group MyROGroup v2c readonly
        group MyROGroup usm readonly
        access MyROGroup "" any noauth exact all none none

You can now poll community private on unreachable.example.com via community unreachable on host hereweare.example.com. Please note that requests on unreachable.example.com will be coming from hereweare.example.com, not your poller.