Improve Screen Sharing, via dedicated Ethernet

I have 2 mac pros on a network together.
A >>> Network >>>B
but I can also join via ethernet A >>>> B directly.
With screen sharing it using port 5900.
Is it possible to port only this traffic via the ethernet port2 (A>>B) so that it doesn't get restricted by other data?

Seem to have sorted it now after much fiddling.

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Screen sharing via ethernet

I bought an Airport Express to replace the flaky AIrport signal I got on my MacMini. I connected it by ethernet to the Mini and set it all up. Browsing and streaming are now much more stable as is screen sharing from the Mini to the MacBook and iMac, but I now can't see the Mini if I want to share the other way round.
Any advice?
Jon

Seem to have sorted it now after much fiddling.

Screen sharing via Airport

I have a 500mhz G4 running 10.4.11 with Airport card that I'd like to set up behind my TV and use for TV recording. I want to do this without having a monitor or keyboard connected.
I can setup screen sharing so I can use screen sharing with my Macbook Pro via ethernet but if I want to do it via Airport, it seems that I need to set it up manually every time I start the G4.
10.5 allows this but I would like to stay with 10.4 on this machine.

In answer to the first question - Yes, I have a .Mac account, and both machines are set to access this account. With reference to the UpnP question - harder to anwer. I would guess I do at home, as Screen Sharing works there (though of course this leaves open the question of AppleTalk enablement under either AirPort or ethernet). Not so sure about work - do you know of a way I can check this?
Thanks - you may be on to something.

Screen Sharing via iCloud on Lion Freezes at Login Screen

After updating to OSX Lion 10.7.3, screen sharing between two computers via the Internet allows me to connect to the remote computer and see the remote user's login screen, but as soon as I click on a user to login, the screen share image freezes before I can enter the user password.
Using iCloud Back to My Mac because all machines have the same Apple ID & password. Exact same setup worked before the 10.7.3 upgrade, but it could be coincidence.
Details:
Can see the remote computers in my finder,
Can click on them and connect successfully using either the Apple ID or the name and password a user that is allowed under Sharing -> Screen Sharing,
When clicking on "Screen Share," the computers connect and I'm prompted to either "Ask to Share the Display" or "Connect to Virtual Display"Since there really isn't anyone using the computer, I select "Connect to Virtual Display"
After clicking "Connect to Virtual Display" the Screen Sharing window shows the remote computer's login screen, whcih shows the user names, their icons and "Sleep" "Restart" or "Shut Down" on the bottom of the screen. One user has an orange circle with a white checkmark next to it.
Previously, I could click a user's name or icon, enter the password and control the remote Mac. Now, not amount of clicking works.
Have tried disconnecting and reconnecting as different users or using Apple ID without changes in the perofmance. Have restarted both machines.
Any help?

I'm having the same problem screen sharing to a Lion 10.7.3 machine, I get this message.
However, it works just like it used to when I screen share from a 10.7.3 machine to another Mac running 10.6.8.
Any thoughts?
Thanks!

Video/Screen Sharing via 3G connection not possible - port restrictions?

I'm running Jabber-based iChat AV 5.0.3 sessions from my MBP connected to the Internet via a wireless USB modem 3G/UMTS (German Telekom D1 network). My buddies are connected to the Internet via regular broadband connections (DSL). I have set up a hosted Jabber server via Dreamhost (without SSL, port 5222 used).
Status Quo:
- Contact status of remote Jabber users shows up properly. All buttons (text chat, screen sharing, video) are available (not greyed out) on both sides.
- Text chat works fine.
- Video chat and screen sharing can be invoked from both sides (confirmation window shows up), but after confirmation the initiation process doesn't finish successfully. The video/screen sharing session doesn't run. *iChat AV shows a message indicating that it doesn't receive an answer from the remote user device.* If the iChat session is initiated from a buddy's computer, the buddy gets the same message respectively.
- For testing purposes, I changed the internet connection on my MBP from the mobile 3G USB modem to a regular *DSL broadband connection (same ISP, German Telekom). In this scenario, video/audio calls and screen sharing work flawlessly!* Therefore, I assume that the problems in 3G connection mode is caused by the ISP (German Telekom) blocking/restricting ports required by iChat AV for initiating the video call and streaming the data on their 3G network.
Is there any way to bypass ISP restrictions, by either changing specific iChat AV port settings on both ends (client devices) or by port forwarding? If yes, which settings should I change? Unfortunately, it's couldn't find any document indicating which ports are opened/allowed by German Telekom's 2G/3G (GSM/UMTS) network.
Below is an excerpt of the error message produced by iChat AV:
iChat Connection Log:
2010-11-09 21:18:19 +0100: AVChat started with ID 494414145.
2010-11-09 21:18:19 +0100: [email protected]: State change from AVChatNoState to AVChatStateWaiting.
2010-11-09 21:18:19 +0100: 0x1a8bf8b0: State change from AVChatNoState to AVChatStateInvited.
2010-11-09 21:18:28 +0100: 0x1a8bf8b0: State change from AVChatStateInvited to AVChatStateConnecting.
2010-11-09 21:18:28 +0100: [email protected]: State change from AVChatStateWaiting to AVChatStateConnecting.
2010-11-09 21:18:48 +0100: 0x1a8bf8b0: State change from AVChatStateConnecting to AVChatStateEnded.
2010-11-09 21:18:48 +0100: 0x1a8bf8b0: Error -8 (Did not receive a response from 0x1a8bf8b0.)
2010-11-09 21:18:48 +0100: [email protected]: State change from AVChatStateConnecting to AVChatStateEnded.
2010-11-09 21:18:48 +0100: [email protected]: Error -8 (Did not receive a response from 0x1a8bf8b0.)
Video Conference Error Report:
0.000000 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/DotMacConfiguration.m:1039 type=4 (FFFFFFFF/2)
[HTTP GET failed (0)]
0.000627 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/DotMacConfiguration.m:758 type=4 (FFFFFFFF/0)
[HTTP GET failed (0)]
0.346813 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/DotMacConfiguration.m:758 type=4 (FFFFFFFF/0)
[HTTP GET failed (0)]
1331.086051 @/SourceCache/VideoConference/VideoConference-415.22/SIP/SIP.c:2917 type=4 (900A0015/0)
[SIPConnectIPPort failed]
1333.086142 @/SourceCache/VideoConference/VideoConference-415.22/SIP/SIP.c:2917 type=4 (900A0015/0)
[SIPConnectIPPort failed]
1335.086270 @/SourceCache/VideoConference/VideoConference-415.22/SIP/SIP.c:2917 type=4 (900A0015/0)
[SIPConnectIPPort failed]
1337.086603 @/SourceCache/VideoConference/VideoConference-415.22/SIP/SIP.c:2917 type=4 (900A0015/0)
[SIPConnectIPPort failed]
1339.087985 @/SourceCache/VideoConference/VideoConference-415.22/SIP/SIP.c:2917 type=4 (900A0015/0)
[SIPConnectIPPort failed]
1341.088212 @/SourceCache/VideoConference/VideoConference-415.22/SIP/SIP.c:2917 type=4 (900A0015/0)
[SIPConnectIPPort failed]
1343.088361 @/SourceCache/VideoConference/VideoConference-415.22/SIP/SIP.c:2917 type=4 (900A0015/0)
[SIPConnectIPPort failed]
Video Conference Support Report:
929.446913 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/VCInitiateConference.m:2059 type=2 (00000000/0)
[Connection Data for call id: 1 returns 1
934.996640 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/VCInitiateConference.m:2074 type=2 (00000000/0)
[Prepare Connection With Remote Data - remote VCConnectionData: 1, local VCConnectionData: 1
935.002114 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/VCInitiateConference.m:2266 type=2 (00000000/0)
[Initiate Conference To User: u0 with Remote VCConnectionData: 1 with Local Connection Data: 1 conferenceSettings: 1]
935.467624 @/SourceCache/VideoConference/VideoConference-415.22/SIP/Transport.c:2138 type=1 (00000000/0)
[INVITE sip:user@rip:16402 SIP/2.0
Via: SIP/2.0/UDP lip:16402;branch=z9hG4bK0fdd30e326aa779b
Max-Forwards: 70
To: "u0" <sip:user@rip:16402>
From: "0" <sip:user@lip:16402>;tag=544473054
Call-ID: 9c7ecf46-ec3d-11df-8530-f81eeb5f4012@lip
CSeq: 1 INVITE
Contact: <sip:user@lip:16402>;isfocus
User-Agent: Viceroy 1.4
Content-Type: application/sdp
Content-Length: 708
Video Conference User Report:
928.427249 @:0 type=5 (00000000/16402)
[Local SIP port]
934.996832 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/VCInitiateConference.m:2171 type=5 (00000000/0)
*[Remote Router]*
*[PORT RESTRICTED]*
934.996842 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/VCInitiateConference.m:2173 type=5 (00000000/0)
[Remote CommNAT Result: 0x000000d0
936.003962 @:0 type=5 (00000000/60)
[Detected bandwidth (kbits/s): 2627 up, 2627 down. (00000000)
936.033015 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/VideoConferenceMultiController.m:2423 type=5 (00000000/0)
[Start Conference With UserID: u0]
978.787787 @:0 type=5 (00000000/16402)
[Local SIP port]
1014.011790 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/VCInitiateConference.m:2171 type=5 (00000000/0)
[Remote Router]
[PORT RESTRICTED]
1014.011800 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/VCInitiateConference.m:2173 type=5 (00000000/0)
[Remote CommNAT Result: 0x000000d0
1015.024555 @:0 type=5 (00000000/60)
[Detected bandwidth (kbits/s): 2627 up, 2627 down. (00000000)
1015.031800 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/VideoConferenceMultiController.m:2423 type=5 (00000000/0)
[Start Conference With UserID: u0]
1323.083386 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/VCInitiateConference.m:2171 type=5 (00000000/0)
[Remote Router]
[PORT RESTRICTED]
1323.083396 @/SourceCache/VideoConference/VideoConference-415.22/Video Conference/VCInitiateConference.m:2173 type=5 (00000000/0)
[Remote CommNAT Result: 0x000000d0
(…)

Hi,
Does this 3G device have any set up functions that are on your Mac ?
If it does not it is likely that it is wide open to all Port (65535 of them).
I presume that in System Preferences > Network you see a Public IP when using this device ?
Again this would tend to pint to all the ports being open.
Is there anything on the ISP's web site that suggests this device is unsuitable to be used with VoIP or SIP connections ?
VoIP (Voice over the Internet) uses the SIP connection process the way iChat does.
Most likely the issues is the way packets are sent.
When you do a download, for instance, do you find the speed increases in the first few minutes ?
When some data packets are sent over the Internet the next one is not sent until confirmation that the first has arrived.
This Latency effects Point to Point WiFi (antenna to Dish on House) and satellite connections mostly particularly when it is a two way thing.
It can effect Mobile/Cell phone type connections.
What sort of Speeds are you getting on the 3G device ?
http://www.speedtest.net/
Do these seem to get faster as the time proceeds ? (this can be difficult to spot).
The Log mentions one end being at just over 2Gbps although it does not make it clear which end.
As the Remote end is the end that reports "Router: Port Restricted" and it works over standard DSL we have to presume they have the ports open.
You could try restricting iChat 's Bandwidth in iChat menu > Preferences > Video Section to 500kbps (try it at both ends)
If that does not work try 200kbps
This may stop iChat from trying to send data too Fast for the Network Connections.
Realistically there are a few too many variables here.
It could be Speed of data throughout at the Initiation point. (Slow Start up of data transfer)
It could be an Internal setting preventing SIP.
It could be that the 3G network sends and receives data by different routes.
(I have seen this once when a ISP was repairing some Cabling. To maintain end user speeds they managed their own network to split Incoming and outgoing data to the end point.)
iChat does not like this as it checks the IPs and the Hops (number of intermediate stages/servers) and if the data is different it will not connect (Man in the Middle attack protection).
I can't remember the last time I knew of someone being successful with either an 3G USB dongle or a 3G phone as Modem (internet Sharing).
Despite my ideas I think you will be unlucky and this will not work.
10:31 PM Saturday; November 13, 2010
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

Configure Screen Sharing via ssh

I have a couple of macs sitting at a remote location that currently has no people there. i need to get into the machines via VNC (have windows at my current location), to see something on the screen. unfortunately, last time i was in front of these machines, i turned on screen sharing, but did not enable the VNC password option. is there a way to configure that option remotely via ssh? I'd really hate to have to drive 2 hours to go hit a simple tick mark on a screen...

You can use the ARDAgent kickstart tool to set the password for VNC access. The command to do this is...
sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/k ickstart -activate -configure -clientopts -setvnclegacy -vnclegacy yes -setvncpw -vncpw YOURPASSHERE -restart -agent

Screen sharing via VPN

Hey guys,
I finally got my VPN connection working remotely. I was told it would be like I was actually on my local network...and it pretty much is except I can't do a screen share. Is there anyway to make this possible over VPN? When I'm locally connected I can screen share via any machine on the network.

When you're on VPN you can do anything you can do locally over the LAN, except use auto-discovery protocols such as Bonjour to locate servers/services (at least without jumping through several other hoops).
This means that you can certainly use VNC to share your server's screen but the server won't appear in the Finder's sidebar - you'll need to know the address of the server to do it.
Just open Finder -> Go -> Connect to Server and enter the server's address in the form of:
vnc://a.b.c.d
(where 'a.b.c.d. is either the ip address or the hostname of the server).
The same is true for other services, too - you can get there, but you have to know where you're going first.

Will Firefox Hello support screen sharing via video chat?

First of all let me say a BIG thank you to all the developers who contribute to Firefox (and all Mozilla projects for that matter). I know countless dev hours goes into the project and I really appreciate all your hard work.
To my question, I realize Firefox Hello is based on the webRTC standard and there are a many other options available for screencasting, but it would be incredibly convenient to have that feature natively built into Hello. Are there any plans to support screen sharing in the future?

hi, yes screensharing features are in the roadmap for firefox hello (and already present in development versions of the browser) - this feature might land in firefox 38.

Screen sharing via iChat

Not really a server question I know, but I wondered if anyone was experimenting with iChat screen sharing as a support tool. Most of my customers are set up for iChat using my own server and IM me with questions from time to time. I've just started installing Leopard on a few clients and wanted to try out the screen sharing. My own machine is a 17 inch Powerbook and it is looking as if there's a limit to the desktop size of the remote machine. Trying it with this particular client's machine, which is a 15 inch Macbook Pro with an attached 20 inch Cinema display, iChat screen sharing never finishes initialising. But if I reduce the resolution of the Cinema display from its default to, say, 1344x840 it works - and shows both remote screens (the Macbook display and the Cinema display).
Am I discovering that it'll only work where there are no displays connected to the remote system that have a higher resolution than the local one(s), or is there a glitch here that can be fixed? Given that it just 'hangs' I'm tempted to think it's a glitch and not some designed-in limit.

...should have mentioned - the connection is jabber of course, the server is 10.4.11 and both machines are 10.5.1 with 2Gb RAM.

Screen sharing - wifi and ethernet

I have a Macbook on an Airport-based network and an iMac on an ethernet network on a Netgear router. The Airport is plugged into the Netgear router. I would like to get the wifi-based Macbook to control the screen of the ethernet-based iMac. I have followed all the instructions as far as I can tell, but have so far had no success. I can connect the two using the Finder 'Go' option but not control the screen. Anyone got any tips for setting this up?

Have you tried Finder -> Go -> Connect to server -> vnc://imac.address
I am concerned about the fact that you mention "Airport-based network" and then in the same sentence "Netgear router".
That makes me think (as I assum cabeandsuz) that you have both a Netgear router *AND* an Apple Airport Extreme or Airport Express router runnin in your home.
If you do NOT have an Apple router, then ignore the following:
If you do have both Apple and Netgear routers, then you may have 2 active routers in your home, and the Bonjour auto discovery protocols will NOT travel between routers. So your MacBook on the Airport Extreme or Airport Express router would not be able to see the iMac on the Netgear router, and the reverse would be the case because you are crossing a router boundary.
Airport Extreme and Airport Express routers can be put into "Bridge" mode via Applications -> Utilities -> Airport Utility -> Internet -> Share an internet connection -> Bridge. (or something like that). That would turn off the routing fuctions in the Airport Extreme or Airport Express and turn it into just an ethernet to WiFi bridge extending the existing Netgear router's subnet, so everyone is on the same subnet, and Bonjour protocols can access all your home computers.

Screen sharing via Back to my Mac

I'm away from home for work.
I have my iMac at home, connected to my internet connection which I know is working. It is on the DMZ on my network so there are typically no issues with blocked ports and the firewall is turned off.
With me I have my Macbook Pro. Both machines are on 10.10.2
When I sign into BtmM on both machines the iMac shows up in finder on the MBP, however Finder says not connected and when i click share screen I get connection failed.
What can I do to troubleshoot this to try and find what part of the chain the issue lies in? I won't be home for another few weeks, but should be able to make changes remotely (the iMac is on, I'm using it to chat to my partner daily and managed to connect remotely via Team Viewer tonight)
TIA

Hey TKarbon,
Thank you for using Apple Support Communities.
Here is a good article to use to resolve connection issues with Back to My Mac.
If you have issues using Back to My Mac - Apple Support
Regards,
Jeff D.

Ipad screen sharing via wifi

hello,
i have a big problem.:) my boss want me to connect ipad to a computer / mac via wireless. and he wants to see ipad screen on the connected computer. for example when i open a app like ibooks or something else he wants to see same action on the connected computer. like a cloned screen property on pc's. i found some application like idisplay but it is mac /pc screen on ipad (extended screen like second monitor),t doesnt work for me unfortunately! i want opposite of this application. it is possible ?

Sorry, but that's not possible. It's not even possible to show the iPad's screen (other than output of specific apps) via a directly-connected external monitor.
Regards.

IPad screen sharing via 3G?

Hi,
does anyone know of a way to share the ipad screen to a Mac Computer via 3G (or alternatively to another iPad)? I would just need to see the screen, I do not need to operate the ipad via what I see, e.g. recieving low resolution screen pictures as jpg or video stream would be ok....
Thanks,
Joe.

I am not aware of any such app. I Googled and did not find anything. You can control a computer via an iPad and use the iPad as a remote monitor for your computer though.

Screen Sharing with i-Mac

I use a mac mini as a dedicated music server in my sound system (excellent with an i-pod touch as a remote), currently I use screen sharing via my i-mac to control the mac mini (installing discs into i-tunes, updating software etc.). The connection is currently via a wireless network however, is it possible to use a cable connection between the i-mac and the mac-mini and if so what type of cable and connecting sockets are used please.
Many thanks for your kind help.

If you have a wifi router with LAN ethernet ports on it, just plug a short ethernet cable into one of the LAN ports and into the Mini.

Back to my mac screen sharing no longer works since Mountain Lion release, even on Lion

I've used screen sharing via iCloud and back to my mac between a 2007 macbook and a 2010 imac. Both computers are still on Lion but screen sharing stopped working when Mountain Lion was released. I've read a number of comments on this forum that people were having trouble since upgrading to Mountain Lion, but I don't think that's the problem b/c I haven't upgraded either machine. I think the problem is something Apple did in preparation for the Mountain Lion release date and it seems to have damaged screen sharing functionality. Anybody else experiencing this or have a fix for it.
As for the specifics, I can still see my "other" machine under shared and can click "share screen," it usually searches for a couple minutes, then pops up the password dialogue box, but then searches for a while and eventually the password box closes, "screen sharing" stays open, but there are no windows associated with it.

I have the same problem, just today (although I'm still running 10.6.8). Every morning I turn on my main Logic mac then fire up my 2 slave macs, connect to them, activate Screen Sharing, and get going.
This morning I tried it, connected to the other macs as usual (I can see/access/alter their hard drives from my main mac) but when I click "Share Screen" I just get the "connecting" dialog box & it just keeps going.
The weird thing is, when I put my laptop into the network via wifi, I can screenshare my main mac's screen (all 3 of them, actually!) but not my 2 slave macs that are ethernet'd to the main mac.
I've tried every solution I could find via google, and nothing is working.
Kirby

Improve Screen Sharing, via dedicated Ethernet

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