first of all, a router is not a firewall, and i personally don't know of any Netgear product that could be a router/firewall... however, you may be in luck.
i'm feeling nice so i'll teach you how to use google.
open your browser.
go to this page... www.google.com
once there in the box labled search lets just try something easy shall we.
seach for "test port scan" and see what you get
that was the first thing to come up when i did it.
now that we know how to google you can try diferent variations of your search and get some new results.
<form action=\"http://www.srsyo.org/tfsearch.php\" method=\"get\">
<input type=\"text\" name=\"search\"> <input type=\"submit\" name=\"submit\" value=\"Search first, ask later!\"></form>
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