"168.0.1. is not a valid IP address."
Don't worry, I was just using shorthand.
In future, please don't use "shorthand". I do not think you would like it if I gave you "shorthand" commands to test things out
b) ifup wlan1
Error for wireless request "Set Encode" (8B2A) :
SET failed on device wlan1 ; Invalid argument.
Is, I think, where you should start looking.
of your wireless connection are working ( eg iwlist scan
shows that your WAP is broadcasting and your PC sees it, so your wireless driver is probably working).
But no connection is established
"Network is unreachable."
Means just that: something basic and essential to networking is not working.
I am very
puzzled as to just why the installation, and then removal of guarddog / firestarter could cause this.
Did you, perhaps, change anything else, whilst you were trying to get guarddog / firestarter to work? Please think back.
As usual, searching the web for error messages helps. I just searched for Error for wireless request "Set Encode"
. There are quite a lot of links.
I suggest you try the same, and see if any of the advice offered is applicable to your situation.