Server answers connections, but not pings:
$ nc -zv 195.154.30.15 22 Connection to 195.154.30.15 port 22 [tcp/ssh] succeeded! $ ping 195.154.30.15 PING 195.154.30.15 (195.154.30.15): 56 data bytes Request timeout for icmp_seq 0 ^C --- 195.154.30.15 ping statistics --- 2 packets transmitted, 0 packets received, 100.0% packet loss