problems accessing internet from pc attached to laptop

[robert rottermann]

Hi friends in Ubuntu,

I have a laptop running 13.1

It is connected to the internet using its internal wfi adapter.
To its Ethernet plug I have attached an other pc running a debc/netw ian 
based Linux (rasbian on a rasberry).

Accessing the rasberry works fine, and it can also ping the laptop.

However it can not "reach" outside its own address range. It can neither 
ping the wlan router, nor the internet.

here are the settings of the two pcs:

laptop
--------
root at porti:~# cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
     address 192.168.1.30
     netmask 255.255.255.0

rasberry
-----------
root at raspberrypi:/home/pi# cd
root at raspberrypi:~# cat /etc/network/interfaces
auto lo

iface lo inet loopback
#iface eth0 inet dhcp
iface eth0 inet static
     address 10.168.1.10
     netmask 255.255.255.0
     gateway 10.168.1.30


thanks for any pointer or tutorial
have a nice day
robert