In article <[EMAIL PROTECTED]>, gene tani <[EMAIL PROTECTED]> wrote: >Hi Sandeep, > >i didn't see where you said if these hosts you want to ping are on your >internal network, or beyond your gateway. Probably the only truly >reliable way to maintain an active hosts list is to install a >ping-sending client on them, like > >http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52302 > >And think about possible legal ramifications of port scanning hosts or >possibly getting your IP blacklisted by a host's firewall, before you >do it. >
Let me shift that excellent summary very slightly: it might help to clarify what "active host" means. In some situations, managers just want to know, "which of our Web servers respond to requests for their top-level page?" If you're dealing with *that* (or which mail servers are serving mail, or ...), then it's entirely appropriate simply to perform the operation (to request a page through HTTP, for example) in question. -- http://mail.python.org/mailman/listinfo/python-list
