Hi, I am currently trialling PRTG for a requirement we have to monitor a clients site to site VPN link. I can successfully poll interfaces via SNMP and receive stats for the physical interfaces. The PRTG software detects a virtual interface named "Adaptive Security Appliance 'Virtual 254'" which I assume is the VPN interface but it shows 0kb traffic even when I am creating load on the link. Any ideas how I can monitor specifically how much bandwidth is being used on the VPN tunnel?
Many thanks in advance for any help