Thanks Alan. I am very inept with Router technology. E.g. I stated I had a 300 meter radius, when in actuality it is only 250 ft. My Router is a NETGEAR WNDR3700v4. I also should have done a search to determine what the acronym "DoS" means (Denial of Service), which means that my router is functioning as it should, and blocking intruders.
I use Malwarebytes software, and have it loaded on 2-computers. I turned-off my WIFI and, before disconnecting it, I had only one of the two computers running wireless. I suspect that my son's laptop is infected because as soon as he stopped using it, my Hughesnet Internet Meter shows that my usage has plummeted (but it wasn't him using 2-GIG in downloads per day). He will be doing a Malwarebytes deep scan today.
The active firewall I have, is built into the Windows-7 OS, and I 'had been' using Microsoft Security Essentials anti-virus protection, but Malwarebytes worked so much better and it found Trojans that MS Security Essentials didn't.
I apologize for taking so long to reply to you and Amanda. I needed to investigate what gear I have, rather than ignorantly talking out of my a$$. Thank you very much for your knowledgeable input, and helping to extinguish my problems.