EDIT THE FOLLOWING GUIDE IS USEFUL WHEN TRYING TO MAKE DIRECT CONNECTIONS OVER THE INTERNET USING TRADITIONAL VNC PRODUCTS (VNC VERSION 5.X OR EARLIER). TO AVOID NEEDING TO TAKE THESE STEPS CONSIDER USING A CLOUD ENABLED SOLUTION LIKE VNC CONNECT. VNC software is designed to work out-of-the-box over local networks or VPNs. Connecting over the Internet will require configuration of the host computer’s firewall and router. This guide will show you how to establish a connection between VNC Server and VNC Viewer when you're away from your host computer.
Feb 24, 2014 - Next, install your VNC software and specifically choose to install the server component, register the service, and start the service.
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You must configure your firewall to allow VNC connections on port 5900. VNC Server should have done this for you during installation if you are using your computer’s default firewall software (click the link below if you need to allow these connections manually on this software). If you have installed a third party firewall (such as Kaspersky or AVG), you need to manually configure it to allow connections on port 5900. This process changes depending on which firewall you have installed.
Search for ‘how do I open a port on ’ for instructions. Access your router’s settings through a web browser (try inputting 192.168.0.1 or 192.168.1.1, or search ‘ IP address’) and navigate to your port forwarding settings. These may be under a different name (search ‘forward ports on ’ if you can’t find them). Here, select the ‘VNC’ service and forward it to port 5900, then click on the name of the computer you plan to control. Note that many older routers may lack the ability to select a computer by name.
If this is the case, you will need to set up a static private IP address for your computer, and assign this address to the port forward rule instead of the computer name. Search ‘assign static IP address to ’. You should now be able to connect your client device to VNC Server over the Internet. However, your router’s public IP address is likely to change every time it reboots, at which point you will no longer be able to connect using the original IP address.
A permanent solution is to register a hostname for your router with a DDNS service such as No-IP or Dyn, and use VNC Viewer to connect to the hostname instead. Now, even if your ISP changes your IP address, your hostname will always remain the same.
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I ran this command and could get it to work with RealVNC Open/Free edition viewer. Ensure that on the client, the color level is set to Full Options-Colour & Encoding-Colour Level sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -activate -configure -access -off -restart -agent -privs -all -allowAccessFor -allUsers -clientopts -setvncpw -vncpw secret -setvnclegacy -vnclegacy yes This method works via the command line (local terminal and remote ssh session too). A few years later, the 'world has changed', so The free version of RealVNC (v. 6.17.1113, Nov 2017, x64) works smoothly for me. In particular from Windows 7 Professional to OS X Yosemite (10.11) and to OS X High Sierra (10.13 w/ latest updates), the 'OS X Authentication' that Mac OS builtin VNC requires, with username and password and no tweaks to the VNC server side, posed no problem.
These are security types 30 and 35: see Although performance was clearly lacking. It's using ZRLE compression; perhaps JPEG or something else is superior, and perhaps professional RealVNC is optimized. TightVNC and TigerVNC both fail complaining those are unknown codes. And do everything over a VPN for heaven's sake if going through the Internet.
Any VNC client I've tried works. On your Mac. Go to System Preferences - Sharing - Enable Screen Sharing. Click the Computer Settings. Button. In the drop-down sheet, check both boxes for Anyone may request permission to control screen and VNC viewers may control screen with password:.
Enter a password. Click OK button. Leave system preferences Once you've done that, be sure not to use 256 colors. Then, when connecting from your other computer you should be prompted for a normal VNC password, followed by the OsX login screen, where you can choose the user you'd like to log in as.