VNC常用操作及常见问题解决办法汇总

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2024年7月16日发(作者：)

TCP port for RFB protocol. The RFB protocol is used for commnunication between VNC server and clients.

-rfbwait time

Maximum time, in milliseconds, to wait for an RFB client (VNC viewer).

-nocursor

Don't put up a pointer cursor on the desktop.

-rfbauth passwd-file

Use authentication on RFB protocol from the specified file. The passwd-file can be created using the (1) utility.

-httpd dir

Serve files via HTTP protocol from the specified directory. Normally, Java viewer classes are stored in such directory.

-httpport port

TCP port on which Xvnc should listen for incoming HTTP connections (to allow access to the desktop from any Java-capable

browser).

-deferupdate time

Time in milliseconds, to defer screen updates (default 40). Deferring updates helps to coalesce many small desktop changes into a

few larger updates thus saving network bandwidth.

-economictranslate

Use less memory-hungry pixel format translation.

-lazytight

Disable the "gradient" filter in Tight encoding (TightVNC-specific). The "gradient" filter often helps to improve data compression

ratios, but may slow down the server performance. Please note that this filter is never used when a client enables JPEG compression

in the Tight encoding.

-desktop name

Set VNC desktop name ("x11" by default).

-alwaysshared

Always treat new clients as shared, never disconnect existing client on a new client connection.

-nevershared

Never treat new clients as shared, do not allow several simultaneous client connections.

-dontdisconnect

Don't disconnect existing clients when a new non-shared connection comes in, refuse new connection instead.

-viewonly

Don't accept keboard and pointer events from clients. All clients will be able to see the desktop but won't be able to control it.

-localhost

Only allow loopback connections from localhost. This option is useful in conjunction with SSH tunneling.

-interface ipaddr

Listen for client connections only on the network interface with given ipaddr.

-inetd

Xvnc is launched by inetd. This option causes Xvncto redirect network input/output to stdin/stdout.

-compatiblekbd

Set META and ALT keys to the same X modifier flag, as in the original version of Xvnc by AT&T labs (TightVNC-specific).

BUGS

There are many security problems in current Xvnc implementation. It's recommended to restrict network access to Xvnc servers from

untrusted network adresses. Probably, the best way to secure Xvnc server is to allow only loopback connections from the server machine

(the -localhost option) and to use SSH tunneling for remote access to the Xvnc server. For details on SSH tunneling, see .

SEE ALSO

(1), (1), (1),(1), sshd(1)

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