SEND A MESSAGE WITH PING

anystation reads ICMP echo requests. There are three ways to say something with ping.

1. THE PATTERN IS YOUR TEXT (Linux / macOS iputils ping)
     ping -c1 -p 6869 anystation.net                  "hi"  (hex bytes, up to 16 per packet)
     ping -c1 -p $(printf 'sos' | od -An -tx1 | tr -d ' 
') anystation.net
   any plain-text payload works too, e.g.  nping --icmp --data-string "hello" anystation.net

2. SIZE MORSE: a 1-byte ping is a dot, a 200-byte ping is a dash
     ping -c1 -s 1 anystation.net; ping -c1 -s 200 anystation.net ...

3. TIMING MORSE: bursts and gaps, scale-free (fast taps or one ping a minute both decode)
     curl -O http://anystation.net/morse-ping.sh   # read it first, it's short
     ./morse-ping.sh "sos" anystation.net

WHAT YOU'LL SEE
  the decoded text shows up as a post with "via icmp". the stock filler bytes ping adds on
  its own are ignored, so a plain "ping anystation.net" doesn't post anything.

WHY
  Ping gets through networks where nothing else does: hotel wifi, locked-down routers,
  devices with a network stack and nothing else.

more ways in: /how · the board: /