Ssh-agent will be started in daemon mode, and will
then pass environment variables back to your login shell to tell later SSH clients how
to connect to it; ssh-add then instructs ssh-agent to load your private keys, at which
point you will be prompted for any necessary passphrases. The password prompt
will appear as text or in a dialog box as appropriate.
13.15 OpenSSH and the SECURITY Extension
Recent versions of OpenSSH support the SECURITY Extension and can generate
untrusted magic cookies on-the-fly. The -X option has been changed to use untrusted
cookies by default.
Some other versions of SSH may use +X instead of -Y.
To use OpenSSH with trusted cookies, use the -Y option:
blue$ ssh -Y chris@red xwd -root >demo.xwd
SSH may be configured to use trusted connections all of the time.
Check the ForwardX11Trusted option in /etc/ssh/ssh_config??”it
should be set to no if you wish to use untrusted clients.
193
Chapter 14 14
Using VNC
14.1 The VNC System
VNC (Virtual Network Computer) is a low-bandwidth cross-platform display system.
It can be used to control and display a Windows XP desktop from a Mac, a
Linux desktop from a Windows 2000 machine, or a Mac desktop from a Solaris
workstation.
Pages:
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300