Screen Sharing? Or Internet Sharing?

My former-PC buddy just got a new Mac... and he lives in another city. And I'm spending many hours on the phone w/ him going... "are you clicking the thingy!?"
We're both on Leopard 10.5.2.
Is there any way for me to "jack" into his computer so I can see his screen? And move his mouse around? Etc?
tia,
e

If he's got a direct connection to the internet (with an ip address that's not behind a router) then try opening Screen Sharing on your computer (located in /System/Library/CoreServices) and then enter his IP address. If he is behind a router then you will need his router's ip address and also have him open a port to his computer (port 5900). Alternatively he can temporarily set his computer to be DMZ (demilitarized, which routs all connections to his computer by the router by default -- not secure, but should be ok for a temporary session).
Then you will need a login/password for an account on his computer.

Similar Messages

Screen-Sharing and Internet-Sharing via same network connection

Hello out there,
I'm using a TiBook (G4 867MHz) and a MacBook Pro 17". They are connected via a WLAN-router. Additionally the MBP is connected to the internet via an UMTS-connection established with a Merlin 870XU type PC-card.
Network is working fine, including screen-sharing. Also the internet connection on MBP works without error. But if I activate Internet-Sharing via WLAN to get my TiBook connected to the internet, the MBP connection to the WLAN is cut off.
Can somebody tell me what's going wrong and how to solve it?
Greetings from good old Germany
Ansgar

Hello out there,
I'm using a TiBook (G4 867MHz) and a MacBook Pro 17". They are connected via a WLAN-router. Additionally the MBP is connected to the internet via an UMTS-connection established with a Merlin 870XU type PC-card.
Network is working fine, including screen-sharing. Also the internet connection on MBP works without error. But if I activate Internet-Sharing via WLAN to get my TiBook connected to the internet, the MBP connection to the WLAN is cut off.
Can somebody tell me what's going wrong and how to solve it?
Greetings from good old Germany
Ansgar

Lion screen sharing over Internet

I'm having some issues setting up screen sharing. The problem is that I set it all up and can see the other computer when we are on the same network. But I cannot see the device when I'm back home and trying to screen share over the internet.
I need to be able to see the screen of my client's Mac while I am at home.
Here is what I've done to set up screen sharing:
Both Macs are running Lion 10.7.3
I have set myself up in the address book of the Mac I want to access.In my address book card I have multiple emails. One of them is the email that I use as my Apple ID.
I turned on screen sharing on the remote computer and added myself to the list of people able to screen share by selecting my address book card that includes my Apple ID.
Access is for all users
I have checked "Anyone can request permission to control screen."
On my computer I have ensured that my Apple ID is included in the Users and Groups control panel.
When I am on their network, in their home, I see their computer in the shared devices section of my Finder window.
I am able to request permission to screen share and am able to gain permission when they accept.
But when I get home, their computer does not show up in my Finder window under shared devices.
What critical step am I missing?
Thanks!

Yes, I didn't say Back to My Mac doesn't let you share the screen over the internet - it does. But it requires you to know the password of the iCloud account that is signed in on the client's computer, as I've said. Your client would be nuts to give you that password, as would you be to sign in your iCloud account on his/her machine. That's not an option.
Here's what Apple says about using Back to My Mac:
http://support.apple.com/kb/PH3866
Here's another nice summary:
http://www.40tech.com/2011/12/25/how-to-use-back-to-my-mac-to-get-free-and-seaml ess-remote-access/

IChat-initiated Screen Sharing across Internet

For those of us supporting Aged Parental Units and their Macs, iChat Screensharing is the Killer App to end all killer apps. And when it doesn't work, it's really frustrating.
One thing that makes iChat Screensharing preferable to Timbuktu or generic VNC shareware is that I don't have to walk the "computer illiterate" (can they retire that cute phrase in 2009?) through configuring port-mapping on his NAT router. "All" I have to do is talk the user through:
1. getting an AIM i.d.
2. configuring iChat to use that AIM i.d.
3. finding System Preferences > Sharing, and enabling Screen Sharing
+(have I forgotten anything?)+
At that point I should be able to ask to share the other person's screen. The really big piece of magic, *contacting someone who is behind a NAT router*, is handled; I presume by some clever sleight-of-hand by the AOL server which the AIM client is logged into.
Okay: I can't get it to work for my father. He's running 10.5.6. I can screen-share using the iChat interface when I'm on the same LAN as he, but not from outside.
His firewall is off. His router is an Airport Extreme, to which he's connected by ethernet cable. The Airport Extreme configuration is about as vanilla as it gets.
Can anyone spot something I've forgotten to do, or ask a followup, or suggest the next troubleshooting strategy?
Thanks,
Chap

Hi,
It is somewhat of a feature that Getting iChat to work depends on the devices used at each end.
iChat has to be able to identify very clearly where it is in relation to the Internet for it work/connect in Video and Audio chats.
As far as we can tell Video and Audio chats will work if you Port Forward certain ports Or allow them via other methods such as Port Triggering, DMZ or UPnP.
We know the ports through using Application like Little Snitch and also Apple have published them.
For Tiger and Earlier http://support.apple.com/kb/HT1507?viewlocale=en_US
For iChat 4 in Leopard http://support.apple.com/kb/HT2282?viewlocale=en_US
What the second one does not tell you is that you need some of the Info from the first if using Bonjour or Jabber IDs as well as AIM.
It also fails to say anything about the Screen Sharing.
AS I have said before the Testing that some of the Regular posters have done show that Screen Sharing seems to be a Random port, separate from the Audio component of that connection.
As you will see from the two links the title includes the mention of NAT (Network Address Translation)
Port Forwarding, Port Triggering and DMZ all rely heavily on NAT being done in the routing device.
UPnP seem less reliant on NAT to get through any routing device.
If you have a modem that routes it is likely that it is issuing IP addresses to the computers (DHCP)
IF you then add a router that also does DHCP then the computers get two IPs (Although they can only display one)
iChat can not cope with this.
It is possible to get a router as well as a non routing modem to pass the Public IP to the computer which would exclude the need to open any ports (As they would All be open)
An Base Station can be behind a Routing Modem and set to Not be a router (Just a wireless access point) which would also preclude the need to Set Port Mapping Protocol in it.
We are in the land of "Ifs, Buts and Maybes" when we try and cover all the possibilities that people may have when dealing with a certain lack of information.
7:23 PM Tuesday; December 30, 2008

Screen sharing across internet

I had set up my Mac for screen sharing with Lion and was able to share the screen to another Mac on the local network, or VNC across the internet. Upgraded to Mountain Lion and screen sharing continued to work both locally and remote.
Moved to Mavericks and now the screen sharing works locally, but will only work for about 30 minutes across the internet. If I reboot the Mac, then I can access the screen across the internet for about 30 minutes, then the connection drops and I would have to reboot the Mac again.
I have screen sharing turned on by:
System Preferences -> Sharing -> Screen Sharing. Clicked on 'Computer Settings...' and checked 'VNC viewers can connect...' and gave it a password.
I can access this remote Mac across the internet using either JollysFastVNC, or the screen sharing app via Finder. Turns out that remote command line and Finder also can access this machine for about 30 minutes, then connection drops.
Has anybody else seen this problem, or have any suggestions on what I can try to keep remote access working for more than 30 minutes?

I don't have a solution (yet). I have the same problem with a Mac Mini remotely. After some short length of time, my ability to control remotely vaporizes. The Mini is running 10.9.1. It seemed to work ok earlier - although the previous version of Mavericks kept screen sharing from working if the firewall was enabled at all. The last system update from Apple fixed that.
But this isn't universal. I can connect with LogMeIn to the Mini after a fresh reboot, but eventually (30 min?) all I get is a black screen. I can connect with LogMeIn to a MacBook Pro on the same remote network as the Mini and it works just fine. I can even connect with LogMeIn to the MacBook Pro and then do screen sharing to the Mini on the same remote network - until that 30 minute? window has elapsed, and then screen sharing fails to connect without even telling me it failed (no black screen, no alert, nothing). Then that doesn't work either. File sharing from that MacBook Pro to the Mini on the same remote network continues to work, and server applications continue running fine on the Mini. For some reason the only problem is that I can't *see* the remote Mini on 10.9.1 for more than a short period after a reboot. All 3 computers involved are running 10.9.1, but only one (the Mini) is failing like this.
It sounds like the problem you are having. If I figure anything else out I'll let you know.

Best Way To Set Up Screen Sharing Over The Internet

What is the best/simplest way to set up screen sharing over the internet so I can remotely control my Mac at home from my Mac at work? My Mac at work is running 10.5.6, my Mac at home is running 10.4.11.

simplest
Get both Macs up to Mac OS X (Leopard). Then use Apple's MobileMe Back-to-my-Mac service.
Or, use iChat screen sharing along with the iChat free 3rd party Chax add-on which allows selected iChat Buddies to auto-accept an iChat screen sharing request. Free AOL Instant Messaging accounts can be used as the iChat accounts.
If you do not want to upgrade all systems to Leopard...
Next would be using the free LogMeIn.com account, or similar service. This will work
The above avoid needing to figure out how you get through the home routers, and provide encrypted screen sharing sessions.
After that you need to arrange for router port forwarding. If you want secure connections, then you should arrange to port forward the SSH port 22, then use ssh tunnels for VNC based screen sharing connections. There are GUI based utilities that will help setting up SSH tunnels. Do some searches over at VersionTracker.com or MacUpdates.com

What capabilites can we expect for across-internet screen sharing?

I use remote screen sharing with my clients. I find iChat flakey, but indispensible when it works well. What are my options for remote screen sharing going into the future with Lion and beyond?

Tojasoh wrote:
What are my options for remote screen sharing going into the future with Lion and beyond?
No one can answer what options may be available in the future. Until Apple announces anything, we are left in the dark just like you.

Screen sharing using VNC across the Internet

I have my computer set up with no-ip.Com and I can ping the machine at the hostname. I turned on screen sharing in the control panel with the settings: I'll allow access for all users, computers settings: anyone can request to control the computer checked, and VPN users can connect with a password. I also went to my Apple Airport utility and added the Apple remote desktop service in the port mapping, which opens port 5900, the screen sharing port.
When I try to connect to the host name using the screen sharing client, it attempts to connect, but fails after five seconds.
Any help would be greatly appreciated

to see if port 5900 is open use your terminal with the following command (this test should be done from outside your network)
nc your-no-ip-serveraddress 5900
I would also recommend a much more secure way to do this.
Turn on remote login. then open tcp port 22 from your router to your mac.
Then use the terminal from your remote mac
ssh -L 5901:localhost:5900 your-no-ip-serveraddress
once the tunnel is established in the screensharing app use a host address of localhost:5901

Screen sharing over internet

Hi, im wondering if i can screen share over internet between mac with an Apple app.
By that i mean, is there any app besides those 3rd party such as (VNC or TeamViewer)?
All of those work fine but i`d love to know is theres an "apple solution" .
Thanks in advance!

Messages 7.x: Share your screen

Screen Sharing and MobileMe

Hi There,
I have a problem, I have a MobileMe account, as does my brother who is currently at university in the US, Im working out of an Apple Mac Pro that is going into a BeBox Speedtouch. Typically, when i'm at work i can connect via 'Back to My Mac' and see my screen's fine.
However, i'm have a nightmare trying to screen share anyone else, video and audio chat works fine, i've tried the two methods with the quicktime streaming and setting unlimited to ichat video streaming. The Connection doctor says i can share my screen and control others, and no error logs pop up when it fails.
Is this a port forwarding thing? could this possibly be a block on behalf of my brothers university connection? some help would be excellent, and some details on exactly how to port-forward would be nice too.
Again any solution would fantastic, i have a mildly mac illiterate brother over there who needs your help!

Hi Luke,
Welcome to the  Discussions
The Speedtouch modem is the issue.
When you do a Screen Share in iChat it also has a Audio Chat with it.
Both Video and Audio Only chats require that the modem handles SIP (Session Initiation Protocol) correctly to connect the two ends in a successful chat.
Speedtouch Devices made by Thomson-Alcatel do what is called "Binding" of SIP to port 5060
BeBox do not appear in this list as a potential for them doing their own firmware for the modem.
This is fine for VoIP Apps and phone (Voice over Internet).
However many ISPs now block port 5060 used for SIP to make you pay more for VoIP services (they lost out on Long Distance telephone charges when VoIP took Off)
This has meant that people need to move SIP to Different ports (Apple moved iChat to port 16402 as first choice in iChat 4
(there was an international standard for 4 ports (5060-5063) originally but the Binding messes up using the other three as well even if they are not Blocked by the ISP)
Up until Version 5 Firmware on Thomson-Alcatels you could Fully Unbind the Default setting. (Last working firmware was 4.2.7)
Since then the Binding can only partly be done and we are now up to something like Version 7 of the Fimware
See here This starts with Unbinding for Version 4 and tells you how version 5 and 6 could be partially done (Same instructions, different format)
Doing the partial unbinding may give you about 5 more successful Buddies in Version 5 and 6 firmware which may include the person you want. But out of a average of 50 Buddies having only 15 you can Video Or Audio Chat to is not acceptable.
The only exception I know to this is the BT Home Hub. BT (Formerly British Telecom) now write the firmware for their branded box themselves.
As a separate issue the Modem should be using UPnP to open the ports to allow the Screen Sharing to work as the actual port used is random (the alongside Audio Chat still needs SIP allowed and port 16402)
I see from this Download page that BeBox only offer Thomson-Alcatels and none of those on Show are back at version 4 firmware.
You would have to see if they will allow you to have your own purchased modem.
8:56 PM Wednesday; August 12, 2009
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

Screen Sharing and Virtual Desktop

Is there a way to force a new remote screen sharing connect to a "Virtual Desktop"?
In my experience, if another user is logged into the computer the new remote screen connection will be forced or given the option to connect to a virtual desktop. This will allow the new connection to run in the "background" without the first connection being influenced.
The issue is when a new remote connection is initiatied and no other connections are active the new connection will be shown on the computer's hardware monitor. i.e. No option is given to connect via a virtual desktop.
This is a security issue because a user can connect remotely and if he is the only connection on the computer he will have all his work shown on the hardware display.
I am hoping to find a way to force all remote connections to be on virtual desktops.

I guess its worth mentioning that although you can indeed screen share from Leopard to Tiger, it only works when you are on the same network. But Remote Desktop works across the internet...
Of course the trick to using Remote Desktop from a truly "remote" location elsewhere on the internet is that you have to be able to reach the IP of the computer you want to control, which can be tricky if its behind a NAT and the person your trying to reach is my Mom who has no idea how to configure her NAT, or firewall, or even find her IP address without my help.
Screen sharing Leopard to Leopard via iChat should be much more straight forward... translation: this will make my life much easier the next time my mom needs help.

Screen Sharing and Video Chat

Hi! I have 2 computers right next to eachother, and I felt like testing out the new Video Effects and Screen Sharing abilities of Leopard.
So, I logged on to each of the computers in iChat (with 2 different accounts), and attempted to do this. However, whenever I attempt to Video Conference or Share Screen, I get an error, saying the other person (the one that accepted the request), cancelled the conference.
So what's up with that?!
I am sorry if this isn't clear, and I will post back with any additional info you need.
Thanks!

iChat requirements
* Audio chats require a microphone and a 56-Kbps Internet connection.
* Video chats require an iSight camera (built-in or external), USB video class (UVC) camera, or FireWire DV camcorder; and 128-Kbps upstream and downstream Internet connection.
* Photo Booth and backdrop effects require an Intel Core Duo or faster processor.
* Backdrop effects when using a DV camcorder require fixed focus, exposure, and white balance.
* Some iChat features offer better performance and quality with higher system capabilities.
More details
More Details went here
http://docs.info.apple.com/article.html?artnum=306687
The Tables can not be reproduced in the Discussions.
7:31 PM Monday; October 29, 2007
Message was edited by: Ralph Johns (UK)

Screen Sharing and video chats don't work

I've been searching this forum for awhile and I haven't found a concrete answer to my problem, so if this question has been answered please excuse me. Ok, So here's my situation am running iChat on Mac OS 10.5.1. Whenever I am using my laptop at my school on the network their, I am able to use both screen sharing and video chat. But when I am at home, I am unable to use either one. It begins to try to start the session, but then i receive a message that tells me that a connection could not be established. I know that I have internet access, but I don't know what could be wrong with it.

After investing far to long in looking at this exact issue on my end, reading the seemingly endless threads on the exact same error, trying all the various tweeks and QT settings, bandwidth limit settings, etc etc. proposed here, I have now solved this problem, and the none of the above were part of the solution.
I have perhaps one of the the most common routers on the market, Linksys WRT54GL.
In a totally unrelated network problem (a printing issue), Linksys tech support advised me to reset my router. There is a small button on the bottom. I depressed it for 30 seconds. Rebooted everything and my printer miraculously worked. Yea, I had to reenter my WAP passkey, router admin password etc., but that took 2 secs. So, what does this have to do with iChat?.... The very next time I tried iChat video and turned on and enabled my camera, the recipient immedialty saw me. No connection error.
Problem solved, for me art least. Not sure if anyone has tried this, but makes sooooo much more sense than the other unApple like suggestions I previous tried. Hope this helps.

Remote Desktop & Screen Sharing not working??

Hello all,
I am trying to connect to a friends computer via the Finder's Screen Sharing, I enabled the screen sharing preferences under the System Preferences, put the password, etc and had him do the same and I am not able to connect to his system. I'm sure there is something else I have to do in order to get this to work. In the Windows world I had to use the VNC. But, I remeber reading in a Snow Leopard book that this is all that had to be done in order for this to work.
Best Regards,
freesparks

I know I could never get this working between two macs of the same OS (10.5.8) over the internet with the appropriate Sharing settings set up....
Im guessing both Screen Sharing and Remote Access through iChat DO NOT work anywhere but in a LAN?

Can't access iTunes and Screen Sharing sharing services on my mac Mini

Since several weeks now I face a networking issue of the stranger kind.
Currently I've got my Mac mini acting as the central server for music, photos and files in my home. Central Network Mgmt device is a Wireless Lan router.
In the past I was accessing the Mac Mini from my MacBook via Screen Sharing this doesn't work anymore. When requesting the service the connection effort just runs idle. In iTunes on my MacBook I can see the Libary of my Mac Mini iTunes but clicking on it brings the rotateing ball and after a certain while the message that the iTunes Libary is not responding and that I should check my Firewall settings. Which I did on both computers and they are wide open. 'Ipfw show' in Terminal brings back the message 'Open for any to any communication' also on both computers.
Makeing use of the File sharing service from the MacBook to the MacMini works but it takes a extreme long while until the shared folder appears on the MacBook.
Trying to access from the Mac Mini my MacBook for all these services is no problem.
One more thing is that my Mac Mini cannot access the Wireless Lan router anymore thru the Web Browser or thru a Ping. Here I get the message 'Ping Send to: permission denied'. I changed the Router still the same message. Internet traffic is only possible after I manually applied a DNS Server with its IP number.
Anyone out there who could help? I'm close to completely reinstall my Mac Mini but would naturally love to avoid this.

wireduck,
Highlight the music folder and on the keyboard type (Command) + i: on the window that opens scroll down if need and click on the lock on the bottom right. Type in an Admin User name and password. Then under the (Sharing & Permissions:) make sure the users you want to open the folder are listed and that there (Privilege) is set to @ least Read. If not hit the ( + ) sign and add them. After you have that all set up click on the little gear next to the ( - )s sign and (Apply to a enclosed items). that way each user can read the files. After that the little ( - ) sign should be gone on the folders.
Hope that helps.

Screen Sharing? Or Internet Sharing?

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