To find out more about nmap, type "man nmap" in a terminal; to find out even
more, type "info nmap".
To improve your understanding of syntax, etc., explore others' experience
with online nmap searches.
This webpage illustrates my use of nmap to find out which attackers to my
website were operating
from servers with open ports 3389, the Windows Remote Access Port, commonly
also left open by naive
users of the so-called Cloud, which is a marketing scheme to put unused
server hard-drive capacity
to work generating income for Internet Service Providers:
https://www.pinthetaleonthedonkey.com/Timeline-RussianInterference.htm
About your Indicator Applet: It could be that your connection to the router
is OK, but that the
router is getting overwhelmed by external traffic.
I would also be suspicious of the USB port into which your ThinkPenguin WiFi
dongle is plugged.
Try a different USB port. I had a scan script running for almost two weeks,
during which the
WiFi connection was broken several times; the script kept right on from the
point of interruption
when the connection was re-made. I've sometimes had to try another USB port
when the connection
didn't wake up right away on reconnecting.
ThinkPenguin does provide a firmware update for their WiFi dongle; don't
hesitate to ask. My (free)
update came with clear instructions, which made its application easy and
quick.