When you use the "ping" command from an SSH terminal the LEM does not use ICMP but rather the legacy TCP echo service which is usually blocked on most internal networks. ICMP is a common firewall rule that is allowed through and the TCP Echo service on port 7 is usually blocked because there are known exploits. Feature request is to update the LEM "ping" utility to use ICMP. The SolarWinds KB article 3275 does not list tcp port 7 as a protocol the system could use (but to be fair, it doesn't list ICMP either....)