note Dragonfly Well, it has been <a href="http://perlmonks.com/index.pl?node_id=55508&lastnode_id=55628">discussed</a> that [Net::Ping] is due for a bit of maintainance, or possibly a more thorough overhaul, because of the fact that it doesn't report ICMP packets correctly unless it is run as root, which presents a security problem. <p> It is an important (not to mention popular) module, so not only would it be a good candidate for your project, but also an opportunity to learn about network and socket programming, and you also might benefit from a bit of parallel programming while you're at it. <p> Another aspect is that you'd get the chance to optimize the algorithms that the module uses, since there are several different approaches that would likely work in the actual implementation. <p> In any case, good luck in your project, whatever you choose! 63152 63152