I need more help here, im not quite getting something right.

I followed the set up for the N900 instructions, and I was successfully able to ping my laptop = 100% packets received.

When it came to doing it the other end, pinging my N900 from my laptop doesnt work, I get 100% packets NOT received.

What could be causing this?

Also, I then try to connect via either filezilla or secure shell and cant establish a connection.

I dont fully understand what i'm doing so its probably something really obvious im missing.