[Tutor] First Project - Ping Sweeper!

[Python]

ping uses icmp.  icmp does not have port numbers.  icmp is a host-to-
host protocol for managing the flow of packets and reporting errors.
http://en.wikipedia.org/wiki/ICMP_Echo_Request
describes the outgoing "ping packet", but is probably too low-level to
be useful.

Port numbers are used in UDP and TCP.  The port scanning program will
not help you with ping.  UDP and TCP have port numbers because they are
application-to-application protocols and use the port number to identify
the target application.

I checked the index of "Foundations of Python Network Programming" and
did not see entries for icmp or ping.  I have not noticed icmp support
in the Python libraries.

-- 
Lloyd Kvam
Venix Corp