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I have setup "Remote Management" on a Mac OS X system (running 10.5.8). Trying to connect with a VNC client results in messages like "No supported authentication types" (VineViewer) or "Unknown authType" (Chicken of the VNC).

It's not a firewall issue, since I opened that up. Any suggestions, ideas?

Edit Same issue happens whether I try to connect from the machine itself or from another machine that can ping it.

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3 Answers

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I think you have to *enable Screen Sharin*g instead of Remote Management, to enable VNC access.

FYI: there's an integrated VNC viewer in OS X:

  1. Open the Finder a
  2. Hit cmd-K or select Connect to Server from the Go Menu in the Menubar.
  3. Enter vnc://ip.of.remote.machine and click connect.
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Screen Sharing and Remote Management ultimately have all the same RFB options. – VxJasonxV Sep 9 '10 at 23:21
That worked, thanks lajuette! I mean, I didn't change anything on the VNC "server," I just connected via the Finder on the guest. – Yar Sep 10 '10 at 0:53
@VxJasonxV: Thanks for the tip. I didn't know that. – lajuette Sep 10 '10 at 4:16
@Yar: Just because I'm curious. Did you enter a username and password? Or only a username. – VxJasonxV Sep 10 '10 at 17:17
Ugh. Sigh. Last question was: "Or only a password?" – VxJasonxV Sep 10 '10 at 17:26
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up vote 1 down vote

The problem is that by default, OS X expects to get a username AND password for authentication, while standard VNC clients just send a password. Connecting from the OS X Finder (/Screen Sharing util) works because that knows how to send both the username and password. If you want to connect from standard clients, you need to set a VNC compatibility password (which can be used without a username) in System Preferences -> Sharing -> Screen Sharing or Remote Management -> Computer Settings -> "VNC viewers may control screen with password:".

Side note: the "Screen Sharing" and "Remote Management" services are essentially the same thing -- the difference is that Remote Management ALSO enables Apple Remote Desktop features (e.g. report generation, file transfer, etc).

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a. Are you connecting it it from another OSX computer?

b. Does the server show up in the "Shared" list (in Finder)?

c. Click the computer name, then click "Share Screen" up near the top right. Can you get that to authenticate properly/succeed?

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