Well awhile ago i made this simple perl code to check for open ports on a range of ip's. 
use IO::Socket;
my $in_file2 = 'rang.txt';
open DAT,$in_file2;
my @ip=<DAT>;
close DAT;
chomp(@ip);
foreach my $ip(@ip)
{
    $host = IO::Socket::INET->new(
        PeerAddr => $ip,
        PeerPort => 80,
        proto    => 'tcp',
        Timeout=> 1
    ) 
    and open(OUT, ">>port.txt");
    print OUT $ip."\n";
    close(OUT);
}

[download]
Now it works fine.. BUT I would like it multi-threaded so i can scan quicker and larger ranges. i have tried everything but nothing has worked, either the program did not work, or i was getting duplicates of everything. any help is appreciated.

In reply to Making a multi-threaded port scanner in perl? by jessica1231

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