Re: absurdly simple LAN problem
> I have two computers, desktop and laptop, and a wireless router and ADSL
> modem. Both machines reach the internet without problems, one via a
> cable link to the modem, the other via a wireless link to the router.
If I understand you correctly, your LAN looks like
desktop --------------: ADSL |
| modem :--- internet
laptop --- router ----: |
But who's doing the NAT? Is it just the router? If so then that's
probably your problem. The desktop needs to be NATed too. Or is the
modem doing NAT (too?)?