ping (command)

ping (1983) command is available in almost all operating systems. The command-line options of the ping utility and its output vary between the numerous implementations. Options may include among others:

• Count of tests: (-c) (Linux and macOS), (-n Windows)
• Size of the payload
• Limits for the number of network hops (TTL) that probes traverse

Timing options:

• Timeout for exiting: -t (macOS), Linux not implemented.
• Interval between the requests -i (macOS)
• Time to wait for a response (-W) miliseconds for macOS and seconds for Linux

Output format:

• Include timestamp on each line: Linux (-D)

Linux

man page: https://linux.die.net/man/8/ping

$ ping -c 5 www.example.com
PING www.example.com (93.184.216.34): 56 data bytes
64 bytes from 93.184.216.34: icmp_seq=0 ttl=56 time=11.632 ms
64 bytes from 93.184.216.34: icmp_seq=1 ttl=56 time=11.726 ms
64 bytes from 93.184.216.34: icmp_seq=2 ttl=56 time=10.683 ms
64 bytes from 93.184.216.34: icmp_seq=3 ttl=56 time=9.674 ms
64 bytes from 93.184.216.34: icmp_seq=4 ttl=56 time=11.127 ms

--- www.example.com ping statistics ---
5 packets transmitted, 5 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 9.674/10.968/11.726/0.748 ms

ping -i google.com

Audible ping

ping -a IP

ping hostwithoutdomain
ping: hostwithoutdomain: Name or service not known

BusyBox

ping www.google.com
ping: bad address

ping 10.10.xx.xx
PING 10.10.xx.xx (10.10.xx.xx) 56(84) bytes of data.
From xx.56.242.XX icmp_seq=1 Packet filtered
^C
--- 10.10.25.10 ping statistics ---
3 packets transmitted, 0 received, +1 errors, 100% packet loss, time 2012ms

macOS

ping -c1 -t1  www.example.com
-t timeout (not available in Linux)

ping -i 0.1 google.com

Note: macOS application firewall in stealth mode ignores ICMP requests.

PAN-OS

• ping host 10.10.10.xxx

nmap

• nmap -sn 10.10.10.*

Cisco IOS

ping 10.10.10.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.10.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

See also: ios_ping Ansible module

Activities

Advanced

1. Review source code of different ping implementation:

Linux: https://github.com/iputils/iputils/blob/master/ping.c

BSD: https://sourceforge.net/p/iputils/code/ci/HEAD/tree/ping.c

macOS: https://opensource.apple.com/source/network_cmds/network_cmds-511/ping.tproj/ping.c.auto.html

• Use nmap for ping a full subnet: nmap -sn 192.168.0.*

• Windows:
  • netsh advfirewall firewall add rule name="ICMP Allow incoming V4 echo request" protocol=icmpv4:8,any dir=in action=allow

Other sofware using ping

• jfrog rt ping
• rabbitmqctl ping
• redis-cli ping
• ipfs ping
• influx ping
• nats server ping
• netdatacli ping

Related

• mtr, traceroute
• ping (Cisco IOS)
• Collectd ping plugin
• Smokeping
• Jitter
• tc qdisc add dev eth0 root netem delay 5000ms
• kill -SIGINT PID
• PRTG ping sensor
• ping -D timestamp
• ansible YourWebserversGroup -m ping
• Using bash tcp built-ins to test connectivity:

echo >/dev/tcp/google.com/80; if [ $? -eq 0 ]; then echo "Connection Successful"; fi

• check_ping Nagios

>/dev/tcp/google.com/80 && echo Success || echo Failure

• Ping An Insurance

See also

• ping, ping -a, ping -M, ping -t, ping -c, --help
• ping, nping, arping, fping, gping, hping, mtr, traceroute, tcptraceroute , tracepath, Test-Connection Powershell cmdlet, iperf, Ping (PAN-OS), BWPing, check_ping, ping -M, ios ping, ping -a
• ICMP, 3-Tuple, ping
• TCP/IP, Transport protocol, UDP, SCTP, QUIC, subnet mask, Routing protocols: BGP, routing table, Policy based routing, multicast, TCP Fast Open, RDP, TTL, RTT, MPTCP, Large send offload (LSO): (TSO, GRO, GSO, TCP checksum), ethtool, SCTP, 5-Tuple, Check TCP connectivity, TCP window size, /proc/sys/net/ipv4/tcp_rmem, ack, List of TCP ports, localhost, broadcast address
• Network monitoring: Cacti, PRTG, MRTG, ntop, ntopng, ping, nethogs, netperf

https://linux.die.net/man/8/ping

https://www.paessler.com/manuals/prtg/ping_sensor