Hi!
Do Solarwinds happen to have a supporting document that ICMP should be allowed on the firewall o be able to monitor the UP DOWN status of the devices? It is not stated on the "Solarwinds Port Requirements"
ICMP doesn't use ports and this is why its not mentioned in the PDF below which I hope is useful:http://www.solarwinds.com/documentation/Orion/docs/SolarWindsPortRequirements.pdf