Introduction
There are several articles in the literature that warn against using ping/ICMP measurements of RTT compared to TCP and UDP measurements. See for example:
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Together with this we could use the list of PingER www hosts that respond to pings. Note that sometimes pings are blocked to a host but TCP port 80 packets work, e.g. adl-a-ext1.aarnet.net.au (202.158.195.68).
Project
We wrote a script ping-vs-tcp.pl.
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