If the machines are really all on your network (i.e. no routers need to be traversed between the scanning machine and the others) you can use Net::ARP to find out whether they are up. Do a Net::ARP::arp_lookup on each IP address, the host is up if its MAC address is returned. This will work even if the hosts have a firewall which disallows incoming connections.

In reply to Re: How can get all the terminal names/IP addresses connected to network by tirwhan
in thread How can get all the terminal names/IP addresses connected to network by sanPerl

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