Unknown android device connecting to my wireless router even after changing wifi key several times [on hold]

An unknown android device is connecting to my wireless router even after changing the wifi key several times.
How is this possible?
My router admin page doesn’t have a password set.
Even though how is it possible to access th… Continue reading Unknown android device connecting to my wireless router even after changing wifi key several times [on hold]

cross-over cable vs router for network with 2 computers?

I want to connect 2 Windows home computers together for a server/client relationship; however, only the “client” computer should be connected to the internet.

“Server Computer” <—-> “Client Computer” <—-> INTERNET

I’m looking at the pros and cons of connecting the two computers using a cross-over cable verses a router in terms of (A) speed, and (B) security.

So far I’ve gathered that in terms of speed, cross-over cable is faster, but not by much. In terms of security, I still have no clue. Which method is more likely to keep internet viruses off the “server computer” in my network? Which gives me more control over determining which programs on the client computer can talk with my server computer?

Continue reading cross-over cable vs router for network with 2 computers?