Client can't ping host

This is my 2. day with Windows 7. I'm having difficulties sharing an internet connection. There's a one-way connection only, apparently.

Host: Windows 7 build 7100 (192.168.0.1).
Client: Debian (192.168.0.2).

Host and client is connected via cross-over cable. Host features a second network connection to a switch box.

I can connect to Samba share on client, and ping 192.168.0.2 too. SSH login on client is accessible also. But I can't ping host at 192.168.0.1 from client. Therefore no internet connection

I'm kind of lost, so any help much appreciated.

Hi there
whilst testing switch off all firewalls etc. I think W7 needs to have remote access allowed as well.

Cheers
jimbo

Thanks alot jimbo. Didn't think of that, disabled firewall in F-secure, now everything works as expected.