Thank you! It's easier to understand now.
When trying with 192 I always put : 8080 at the end but really nothing shows that the device registered that I pressed "OK"

I forgot to add that I'm using xubuntu 12.10 (64).
I'll keep trying anyway
Edit: I tried again and this time it worked! I'm not sure what was different this time and I'm the kind of person who prefers to understand, but it works so that's alright

Once again, thank you theducks for your input in helping me to know what address what the right one.