I agree that it is not easy to find SPI firewall option... Did you submit a ticket to complain these things? http://ticket.tp-link.com/index.php?/Tickets/Submit

Only DDNS providers listed on the web interface are suppported.

For Windows http://www.tp-link.com/en/faq-669.html For MAC http://www.tp-link.com/en/faq-668.html

Rikachu wrote Apologies for waking up an old thread, but I noticed OP was having problems with the 6030, but the link you've provided links to the 4010 firmware. Are these cross-compatible?! Thanks!...

Follow this guide to check your configuration. http://www.tp-link.com/en/faq-902.html

Paul, you have confirmed that all four devices support passive PoE instead of standard PoE? As I know, TP-LINK has no switch which support passive PoE. In your case, you can use TL-SF1008P plus four...