Re: can't ping any port on loacalhost

heavytull <heavytull@xxxxxxxxxxx> wrote:
probably just a mistake, i though it worked like that. anyway there no
fundamental reason that says we couldn't. it is just a technical reason.

But it's a fundamental technical reason. :)

ping uses ICMP, a protocol piggybacked on top of IP, which deals with IP
addresses but not ports. Ports are (often) a TCP or UDP construct. In
that way, you can't ping a port because ICMP has no idea what a "port"
is.

http://en.wikipedia.org/wiki/Ping#ICMP_packet

-Beej

.

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