Here I would like to take you through the steps to configuring and securing a router (In this case we will use the WRT54G as an example) for your home or small office setup. 
Securing a router can be very important especially when the wireless function is enabled.  Likely the most important reason is to [...]

PROBLEM
You get this when trying to SSH to a host from some IP (Let’s assume it’s 111.22.33.44 for the scope of this problem):
ssh_exchange_identification: Connection closed by remote host
What to do?

PROBLEM
In Fedora 10, the root login was disabled into the GUI, giving you a unable to authenticate user message.  You may have noticed that you got a warning about this in Fedora 9 but it wasn't yet disabled then.  Not so in Fedora 10 so this might be something you would want to do [...]

Working remotely from various places, I needed to have access to my Linux machine at home. Unfortunately for me, my DSL IP was dynamic and at the time my ISP would change this IP several times a day. That was good for maybe only a few hours and then it would change to something [...]

Especially true with dual boot systems, sharing files between two different operating systems on a single PC can become a time consuming task.  One thing many new users do when they install a Linux on a different partition of the same machine, is to try to connect to the other operating systems and files [...]