--- Anthony Campbell <[EMAIL PROTECTED]> wrote:
> I've struggled with this one for months! Much perusing of HOWTOs and
> googling hasn't helped.
I'm not surprised, as it's quite a specific issue, and doesn't really
illustrate any one possible point of failure.
> 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.
OK, so that at least proves that you have a default gateway setup OK.
> However, they do not communicate with each other. I cannot ping from
> one
> to the other though I can ping localhost on each. Turning off the
> firewall (shorewall) does not help.
Then you should use the command:
traceroute <IP>
To at least see where the point of failure is likely to be.
Furthermore, when asking questions like this, it is often handy to
include the output (or at least a link to it) of the:
route -n
command, from BOTH machines, as well as:
ifconfig -a
from BOTH machines.
> I've tried adding the appropriate IP values (192.168.0.20 and
> 192.168.0.22) to the respective /etc/hosts and /etc/hosts.allow, but
> it
> makes no difference.
They're not used to ping raw IP addresses anyway. I suppose at an
outside edge, you could check your /etc/nsswitch.conf to make sure that
the values listed there are sane, however, I suspect that it's more a
routing issue on your part. Certainly the output from the commands
I've requested will help.
-- Thomas Adam
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