If you can ping hosts on the local network, try to
ping one remotely connected via a gateway:
If ping returns an error indicating no route is available,
you may need to reconfigure your routing tables. See
Chapter 5, ``Configuring Internet Protocol (IP) routing'',
and the manual page for
route(ADMN)
for more information.
If ping fails completely, use
traceroute(ADMN)
to contact the remote host, and note where the failure occurs.
If traceroute packets only reach a host within your network,
you may need to perform troubleshooting on the last host reached.
If they reach a destination outside your network, the problem is on
the remote host. Contact the administrator of the remote host,
if possible.