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Full Discussion: Screen Sharing VNC Mac
Top Forums UNIX for Dummies Questions & Answers Screen Sharing VNC Mac Post 302651039 by Tyler_92 on Monday 4th of June 2012 11:10:36 PM
Old 06-05-2012
Screen Sharing VNC Mac

I am having some trouble using screen sharing with my Mac. There is a Mac Pro in the lab at my school, and I need to access it via screen sharing from my Macbook Pro from home. Each has Lion. The screen sharing works when I am in the lab and the Mac Pro is on the WiFi network, it also works using vnc when the Mac Pro is not connected to WiFi. The method I am using is go to "Go" in the Finder menu and then "Connect to server." Then I simply type vnc://(ip address or hostname). After doing this, it attempts to connect to the server and then pops up with

"Please make sure that Screen Sharing (in the Sharing section of System Preferences) is enabled on the computer to which you are attempting to connect. Also make sure your network connection is working properly."

I should point out that I made sure that Screen Sharing is enabled (as I said, it works when I am there) and also that the ssh remote connection through the terminal works. Does anyone have any thoughts on what the problem could be?

---------- Post updated at 11:10 PM ---------- Previous update was at 09:55 PM ----------

Hmm.. It seems that the VNC software only connects computers that are on the same network. Is there some sort of application that works around this? I really need to work from my home.

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SYNERGYC(1)						      General Commands Manual						       SYNERGYC(1)

synergyc -- synergy client SYNOPSIS
synergyc [-d level | --debug level ] [--display display ] [--daemon | { --no-daemon | -f } ] [-n name | --name name ] [--restart | { --no-restart | -1 } ] address synergyc { --help | -h } synergyc --version DESCRIPTION
Starts the synergyc mouse/keyboard sharing client. This manual page was written for the Debian distribution because the original program does not have a manual page. Slightly old documenta- tion exists in /usr/share/doc/synergy/obsolete/index.html; it is the most up-to-date information available, despite the pathname. OPTIONS
-d level --debug level use debugging level level. Debug levels are from highest to lowest: FATAL, ERROR, WARNING, NOTE, INFO, DEBUG, DEBUG1, and DEBUG2. Only messages at or above the given level are logged. Messages are logged to a terminal window when running in the foreground, and to syslog when running as a daemon. --display display connect to the X server at display --daemon run the client as a daemon. -f --no-daemon run in client the foreground. -n screen-name --name screen-name use screen-name instead of the hostname. This option lets the client use a name other than its hostname for its screen. This name is used when checking the configuration. --restart restart the client automatically if it fails. -1 --no-restart do not try to restart the client if it fails for some reason. -h --help display help and exit. --version display version information and exit. address address of server. address has one of the following forms: o hostname o hostname:port hostname is a hostname or address of a network interface on the server system. port is a port number from 1 to 65535. port defaults to 24800. RUNNING THE CLIENT
Run the client on all computers that aren't the server using the following command line: synergyc -f server-hostname Replace server-hostname with the hostname or address of the server system. The `-f' option causes synergy to run in the foreground. This option is recommended until you've verified that the configuration works. If you didn't include the system's hostname in the configuration file (either as a screen name or an alias) then you'll have to add `--name screen-name' to the command line, where screen-name is a name in the configuration file. The client should quickly report `connected to server'. If it does not but doesn't print an error and exit immediately then it's trying to connect to the server but cannot. It will time out in 30 seconds and exit (use ctrl+c to exit earlier). You should check that the server is running and is reachable over the network and try again. If the client fails and exits it should print an error describing the problem. Here are typical problems and possible solutions: o failed to open screen: check permission to open the X display check that the DISPLAY environment variable is set o already connected: check that the synergy client isn't already running o refused client: add client to the server's configuration file o connection failed: check server-hostname the server cannot open the desired port, stop the program using that port (24800) and restart the server Once all the clients are running, try moving the mouse to each screen. Be sure to check all the configured links. STARTING AUTOMATICALLY
Synergy requires an X server. That means a server must be running and synergy must be authorized to connect to that server. I recommend to start the synergy client from a start script of your desktop environment or window manager. The commands should look something like this: pkill synergyc synergyc [options] server-hostname If you are using GNOME, you can add the synergy client to the list of the non-session-managed startup programs. For doing this, start the control center, choose `Session Properties & Startup' and then `Startup Programs'. Add a new entry with `/usr/bin/synergyc server-hostname' as the startup command. options must not include `-f' or `--no-daemon'. It's important to make sure no old copies of synergy are running so they can't interfere with the new one. SEE ALSO
synergys(1) AUTHOR
This manual page was written by Daniel Lutz <danlutz@debian.org> for the Debian system. Edited by Titus Barik <barik@ieee.org>. SYNERGYC(1)

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