====== ICMP (ping) ======
Ping can be used to see if a route to the target system exists. The ICMP protocol can be leveraged to get an answer so you know the remote system is actually powered on.

===== Commands =====

^ from specific source IP | ''ping -S 127.0.0.1 tilde.fun'' |
^ from primary IP of interface | ''ping -S eth0 tilde.fun'' |

===== disabling ICMP =====
This should never be done as security by obscurity isn't actually security[([[https://blog.paessler.com/disabling-icmp-and-snmp-wont-increase-security-but-will-impact-network-monitoring|Disabling ICMP and SNMP won’t increase security, but will impact network monitoring]] (Wayne Tolliver, Paessler.com, 2020-2022) )]. Pinging hosts is a low-tech way to debug network problems and you're definitely not doing yourself or others[(users, customers)] any favors by disabling it.

===== See also =====
  * [[de/guide/windows/ping|🇩🇪 Ping (Windows)]]