I fear that I have missed something obvious. I can ping to local devices and the router gateway but not to external internet sites.
On the local network I have a PC running Windows 7 that works fine. I wirelessly connect phones tablest and a Windows 10 laptop with no problem.
The Debian installation is on a acer aspire laptop with wired and wirless ethernet connections.
It appears that nothing from the acer gets to grets past the router,configured as a gateway witth address 192.168.0.1 and dhcp.
The attached file is a log of various tests.
Some help and avice would be much appreciated.