My problem is that if I use "tcp" as $protocol some hosts result Unreachable (but with windows command "ping" same hosts are reachable);

"tcp" will open a connection to the remote host's echo service (port 7), so if that's not open you won't get the results you want.

If I use "icmp" as $protocol all hosts are reachable (but with windows command "ping" some hosts are not reachable or not exist);

That's a bit weird - does it work without threads?

Anyway, if you take your system's ping as reference, why not just use that (trough Net::Ping::External)?

In reply to Re: Net::Ping on Windows by moritz
in thread Net::Ping on Windows by gioronco

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