Thanks for looking into it. I checked the code again and those are my typos while posting. The actual code has single qoute in correct places. Below is the line:

my $ftp = Net::FTP->new('xxxxx.xxxxxxxxx.com', Firewall => 'ftp.glb.xx
+xxxxx.net', FirewallType => 7, Debug => 1 );
[download]

I was wondering if the dialog expected by our firewall is supported by one of the 7 Firewall types?