Dodanie reguł w firewallu ECHO / PING / ICMP

New-NetFirewallRule -DisplayName "PING / ECHO / ICMP v4" -Direction Inbound -Protocol ICMPv4 -IcmpType 8 -Action Allow  
New-NetFirewallRule -DisplayName "PING / ECHO / ICMP v6" -Direction Inbound -Protocol ICMPv6 -IcmpType 8 -Action Allow