X forwarding and BadWindow error

[Damien Miller]

Andreas wrote:
> Has anybody else experienced weird X11 forwarding problems such
> as the one below:
> 
> andreas at teste10:~> x3270
> X Error of failed request:  BadWindow (invalid Window parameter)
>   Major opcode of failed request:  3 (X_GetWindowAttributes)
>   Resource id in failed request:  0x404372
>   Serial number of failed request:  833
>   Current serial number in output stream:  834

As of OpenSSH 3.8, X forwarding by default uses the XSECURITY extension
to limit access to the client's X server. You can disable this using the
ForwardX11Trusted option or you can adjust the server's policy
(/etc/X11/xserver/SecurityPolicy for XFree)

-d