Pfsense 2.2.3 IPSEC S2S VPN Monitoring

[Iperion]

We are using PRTG network monitor to monitor all our  network and servers. I want to monitor the Ipsec tunnel wich is active on the virtual PFsense but haven't been able to find any OIDs for this.
I already checked with the Paesler which is the supplier of the PRTG network monitor program and they tell me without any OIDs we cannot monitor it.

I hope that some one can provide me necessary metrics for this via OIDs

[Guest]

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SNMP-OIDs for monitoring pfsense
OIDs for pfSense on Alix
pfSense MIBS 1
pfSense MIBS 2