You want: 
    foreach $pt (@{$remote_port [$i]}) {

[download]
You should also increment $i in your loop.

However, I would note store the data over two arrays. I'd keep a hash, like this: 

    my %data = (
       'arbornet.org' => [21, 23, 80],
       'slashdot.org' => [80],
       'apple.com'    => [80],
       'yahoo.com'    => [80],
    );

[download]
and iterate with each over the hash.

Abigail

In reply to Re: Help with multidimensional arrays and IO::Socket by Abigail-II
in thread Help with multidimensional arrays and IO::Socket by macx666

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