Screen Sharing problem - is it a security problem?

OK, so I'm having the same screen sharing bug with remote machines.... except when I have my VPN active. Then the remote machines work exactly as normal. With the VPN off, I get the Screen Sharing only error. Anyone who is more familiar with VPNs know what is up?
Thanks!
-c

You may be interested in this helppage<br>
http://support.mozilla.com/en-US/kb/Is%20my%20Firefox%20problem%20a%20result%20of%20malware<br>
If you recently had a crash and have sent the crashreport to Mozilla, then you can post a crashreport ID on the forum. Sometimes we can see signs of a virus in the crashreport.

Similar Messages

Back to My Mac - Screen Sharing Mac OS X 10.10 problem

Sense Mac OS X 10.9 great feature Screen Sharing & Back to My Mac does not works any more.
Mac OS X 10.10.1
Russian interface:
We can see remote computers, but can not connect. We get a error.
English interface:
We can not even see remote macs.
If I start up main computer from Mac OS X 10.8 Screen Sharing works fine. Remote macs has Mac OS X 10.8 and 10.9

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

Security problem (devicelockd) ! Help

Hello, I have a big problem on the phone.
The phone has bugs, but it restart problem!
Following mesage: security problem (devicelockd) : /usr/lib/qt4/plugins/inputmethods/libairuiplugin.so
No way to restore!
What can I do?
Solved!
Go to Solution.
Attachments:
photo.JPG ‏31 KB

Did you install an app called "Air UI" ?
you should send your phone to Nokia care
however If you brought your phone from foreign country or if it is not possible for you to visit nokia care then
download nokia software updater
http://europe.nokia.com/support/product-support/device-software-update
and then re-install your firmware
For more information...visit this thread
http://talk.maemo.org/showthread.php?t=80512

Screen sharing stops after a few seconds of sound

I am struggling to resolve this. And I thought I was good at this.
I can do a video chat without incident.
Quicktime streaming is set to 1.5M
Bandwidth is set to none
Screen sharing is allowed in sharing prefs
I have tried all configurations in the prefs security firewall
We are both using ADSL routers
I can connect to others, this is their first attempt.
I don't believe there is anything other than the default router settings on their router.
(The remote client has an applescript to automatically accept screen sharing invites)
Anyone with any more ideas?
Ralph?!
JKB

Hi,
Is this failing with Error 20 ?
Sometimes in a the router or modem if you use Port Forwarding then you are your Buddy may be missing the Screen Sharing Port.
The Screen Sharing part uses a different port to the Audio port.
As the port for Audio (And therefore Video) are known and can be port Forwarded it is the random Screen Sharing port that can be the problem.
iChat 3 info http://support.apple.com/kb/HT1507 that includes Bonjour and Jabber info
iChat 4 info http://support.apple.com/kb/HT2282
If you are not using (or your Buddy) UPnP then I would change the method of opening the port to that.
6:14 PM Saturday; June 20, 2009

Screen sharing and ARD windows to other computers are invisible!

Hi
I have been using screen sharing and or ARD with no problem, for some odd reason today when i went to control a iMac in my network, the window opens but is not there, like i hit command W and i noticed it closed windows on the iMac i can not see the screen at all.
Please advise

ahhh, thanks you did it!
forgot to restart after system update!
cheers

Screen sharing and video

Hello all.
video works fine at my house where I can turn on UPNP. However at work nothing works because UPNP isn't enabled. I have to forward all ports to my laptop. So my question is what ports to forward?

It is with the Screen Sharing side that we have real problems.
iChat 3 used
TCP 5190, 5220, 5222, 5223, 5298
UDP 5060, 5190, 5297, 5298, 5353, 5678, 16384-16403
This includes all the Jabber, Bonjour and A/V ports as well as the Login and File sending.
Leopard/iChat
Same until we get to that last group or twenty UDP ports
Port 5060 is dropped and the group becomes just 10 (16393-16402) still inside the iChat range if already done.
The Screen Sharing I have seen with Little Snitch running suggest this happens on three ports. Two for the Screen Sharing and one for the Audio part.
The Audio part remains where is does in Normal Audio or Video chats with it's first choice being 16402.
It's the other two ports.
Theses seem fairly random in the 50,000 range. They are widely dispersed as well which makes it difficult to suggest a small range that iChat might then use.
9:26 PM Monday; December 24, 2007

Firewall vs screen sharing

Hi,
since a few days, I'm using Lion on my iMac 24" (2008) and my MacBook Air (2010).
But now, I've some problems: Screen sharing from MBA to the iMac doesn't work if the firewall if the iMac is active.
Screen sharing from iMac to MBA: no problems. Strange?!
My router is a Time Capsule 3rd Generation.
Any idea how to solve this?
Thanks
Michael

Solved:
Iv've had to reboot my iMac and to configure the settings once again.
Then, the missing programms have been added to the firewall!

I cant get screen sharing to work on my home network

I am trying to connect my macbook pro to screen sharing so i can access it at my school computers, which are all iMacs running 10.6.6. When i was at school, and connected to the wireless network at my school i could screen sharing through the finder>go>connect to server. Once screen sharing was enabled i just entered the vnc address and it connected flawlessly. When i got home, and i set my netgear router( wireless-n 150 model: wnr100v2) for port forwarding start port: 5900 end port:5900 server name vnc, and set the ip address to my computer, and when i tried to screen share from another macbook within my network through the finder>go>connect to server, i could not connect. Oddly when i connected my mobile me, i cold screen share over the network. I want to do a WAN screen sharing and i cannot figure out how do do it. I would appreciate any help because it is very important that i enable this feature.

I'm a little confused by your explanation (it's late), so I am going to say what I think I read:
You want to set up your home computer so you can access it via screen sharing from school.
The home computer needs sys prefs sharing screen sharing enabled, and sys prefs security firewall must allow it, too. You port forward port 5900 through your home router to that home computer, which may or may not require that you use a static "192.168.x.x" (or "10.x.x.x" -- whatever the router's LAN subnet is) LAN IP address on that computer -- some routers require that computers acting as servers have static IPAs -- some routers don't.
You need to find out what is the public (internet-facing) WAN IP address that your ISP has assigned to your router; it is not the 192.168.x.x (or 10.x.x.x) address given to your home computer by your home router. You can find that by going to http://checkip.dyndns.com on your home computer. Unless you pay extra for a static public IP address from your ISP, ISPs may (and do) change it periodically on you without warning. So vnc://123.45.67.89 may work one day but not the next.
Some routers have a built-in feature to work around this by allowing the router to advise dynamic DNS servers of any changes in the public-facing IP address of the router. Of course, you need to have established an account with a dynamic DNS provider so you have a host name (like lomberg.noip.com or lomberg.dyndns.com). These are generally free accounts unless you want a special name that doesn't have the dynamic DNS provider as part of your host name.
If your router does not have this capability, these dynamic DNS providers have a piece of software that you will need to install on your home computer (the "VNC server") that reports changes in your public-facing IP address to their DNS servers.
Once this is done, then from afar, you can ⌘k to vnc://lomberg.dyndns.com (or whatever you set up your host name to be with dyndns or equivalent outfit) and you don't need to worry about what your ISP has done to you with regards to your public-facing WAN IP address du jour.
Note that with some (most?) routers, when you are on your home network, you will not be able to vnc to the host name or numeric WAN IPA in this manner. I don't know why it doesn't work, it just doesn't. I've had modems both ways -- my current ISP rental modem doesn't while the previous one (which broke so I had to replace it with my current POS modem) did. So in such case, you have to vnc://192.168.x.x of the "vnc server" computer when you are on the same LAN.
You are aware that on the client (school) machine, screen sharing preferences can be set to encrypt all data on the connection, not just the username/password negotiation piece, right? I don't know whether that setting persists across sessions or only persists for the duration of the current session. I wouldn't want my client mouse/keyboard and "server" screen video to be transmitted in the clear; that's why I bring this up.
Does that answer your question? Or did I totally misunderstand what you were asking?

Screen sharing Lion- Lion problem

I am trying to set up screen sharing in my local network.
I am using a MacBook with latest Lion as server to which I am trying to connect.
I am connecting with a Powerbook 12" 10.5.8 without problems and controlling the MacBook via Screen Sharing.
I am unable to connect to the MacBook using a MacBook Pro with same Lion installed.
Before that I used the same setup to try out RealVNC. Again, the Powerbook connected to the MacBook without problems, but the MacBook Pro is unable to connect.
Any suggestions?
Thanks.

This thought just occurred to me. Do you have the Macbook Pro Firewall enabled? System Preferences -> Security & Privacy -> Firewall. Is it enabled? If it is, try disabling it.
Time to ask a question about your network setup. Wild Goose Chase questions.
You mentioned an Airport Extreme. Is that the ONLY router in the house? The reason I ask, is that if you have multiple WiFi routers (for example because your house is so large, you need more than one WiFi router to cover the entire house, or your house has has 4 floors you need to cover and the structure interferes betwen the basement to the converted attic), you could have multiple subnets which could affect the ability to connect to devices on the other subnet. If you do have multiple subnets, there are ways to address this.
I would like you to download and run "Bonjour Browser"
<http://www.macupdate.com/app/mac/13388/bonjour-browser>
Run Bonjour Browser on the Macbook Pro (and any other Macs you like). I want you to look for "Remote Frame Buffer" entries (VNC Servers - aka Screen Sharing servers). Click the triangle to show all the systems offering VNC server.
Assuming you see your Macbook listed, click on its triangle to show the IP address and port number. It should be something like 10.0.1.nn:5900. Hopefully you see the same IP address as you think your Macbook has assigned to it (which you can see via Macbook -> System Preferences -> Network -> Advanced -> TCP/IP.
If you are not seeing your Macbook via Bonjour Browser from your Macbook Pro, then there is something affecting your ablity to see the Macbook.

IChat Screen Sharing problem on Leopard

Hello everybody!
I've searched this forum but I couldn't find a proper solution to this, at least one that works for me... here goes!!
I've been using my mac for a while now, but for the first time today tried using iChat and Screen sharing with it. I'm having troubles with it, however, even though my chat and video/audio talk is working fine. I know that the problem is with me because my two other friends were able to connect together with screen sharing, but I was unable to connect to either of them. It seems to connect for a split second then it gives the error "Screen sharing could not be established".
1. Screen sharing worked between me and one of the above friends while we were both at my house connected to the same wireless connection. It doesn't work anymore now that we're both at our separate homes. I do know, however, that this friend has the same router as me, but they seem to connect fine with other people.
2. My router is a NETGEAR DG834G. I tried updating the firmware but it says it's either the wrong file or version so I gave up after two goes.
3. I have port forwarded the following ports: 5060,5190,5220,5222,5297,5298,5353,5678,16384-16403. Also by default NAT and UPnP is enabled.
4. I have also tried playing around with the security > firewall settings, with only access to specific applications, and then added iChat. Though I believe I played around with this while iChat was already running.
5. I tried a Remote Reboot of my router (not by holding down the reset button, but through safari)
I know that there are some discussions where people have commented on the same error as me, but I never have seemed to found a solution that has worked out for me. If there are any suggestions that would be fantastic! thanks
-Paul.
Message was edited by: ilovemyjc

Thomson-Alcatel 780 modem.
Unfortunately this is going to needs a new modem (or Bridge this one and have a router)
Read this section http://www.ralphjohns.co.uk/page4a.html#_text
Although the SIP Binding to port 5060 in this device could be UnBound in Version 4 firmware it has not been fully Unbound in Version 5 or 6 (Despite the version 5/6 instructions further down that section).
The problem can make the iChat issue look intermittent with it working with some Buddies and not others.
Getting a new modem that does not have SIP binding is the only realistic way around the issue (Or setting the device to Bridge and having another router)
11:00 PM Friday; April 25, 2008

Problems connecting video and screen sharing

see the leopard iChat forum, I moved it to there. thanks, its called Another Video and screen sharing connection problem
Message was edited by: wishiwasmtbin

Hi,
Welcome to the  Discussions
IS this Linksys doing UPnP ?
This is set in the Administration page of the set up pages.
Also in the Security Page disable the Anonymous Ping Blocking.
If you set UPnP then make sure any Port Forwarding, Port Triggering and DMZ is disabled.
These last three use NAT more strongly than UPnP and NAT can be an Issue.
The Appleu3test accounts are effectively on Public IP address so Lees/no NAT
1:52 PM Sunday; December 9, 2007

Screen Sharing/network problem seems confined to 1 volume. What's the fix?

I am having a networking problem on one of the volumes of my multi-volumed, three-Mac local area network, and I need a networking guru to identify the specific software file(s), application(s), or system configuration that is the cause of the problem. I have already spent several hours checking and re-checking the various hardware and system preference settings involved, and I have narrowed the problem down to a software corruption issue and/or system configuration issue on one volume.
I now need someone to identify specifically what the nature of the problem is, and how to eliminate it. I am not looking for a sledgehammer solution that says I should re-install all of the Mac OS X software on the problem volume. That may be held in reserve as a last resort. I'm looking for a more elegant approach, one that points out the specific corrupt files to remove without disturbing everything else.
Here's some background to set the context. I have a MacBook Pro laptop; a PowerMac iMac G5; and a PowerMac G4 hooked up in a network. All are running Leopard 10.5.8. All have file sharing and screen sharing enabled. Besides being able to connect to each other using registered users, my goal here is for each of the Macs to be able to share the screen of the others upon my demand. Since each of the 3 Macs can theoretically share the screens of the other 2, that makes a total of six possible connections. Five succeed; one does not. That's the problem. I am trying to determine why the iMac G5 cannot share the screen of the MacBook Pro.
The iMac G5 has no problem sharing the screen of the PowerMac G4. That connection is fast and immediate. But, every time that I hit the Share Screen button on the iMac G5 to try to connect to the MacBook Pro, I get a window with the blue barber pole spinning for two or three minutes as it is allegedly "Connecting to Mac Book Pro," followed by a window with a headline telling me that "Connection Failed to MacBook Pro." The text within that window goes on to say: "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 that your network connection is working properly."
Well, as I indicated, the PowerMac G4 has no problem sharing the screen of the MacBook Pro, so the Screen Sharing settings on the laptop are correct; and the iMac G5 can share the screen of the PowerMac G4, so its network connection is working properly in that regard. It is only in regards to sharing the screen of the MacBook Pro that the iMac G5 is not working properly.
The reason why I say that the issue must be unique to the one volume in question, let's call it "iMacG5 Music," is that another Leopard volume on the same computer has no problem whatsoever in sharing the screen of the MacBook Pro. Whenever I boot up in that volume, let's call it "iMacG5 JMB," it makes a network connection with a registered user name immediately, and it is able to share the screen of the MacBook Pro within a second of my issuing the command. In sharp contrast to the success of the iMacG5 JMB volume, the iMacG5 Music is unacceptably slow (several minutes slow!) in making a network connection with the MacBook Pro, and it always fails to share the screen of the MacBook Pro, preferring instead to take about three minutes to attempt the connection, before announcing its failure.
Since the iMacG5 Music volume makes an immediate network connection to the PowerMac G4, as well as sharing the screen of the PowerMac G4 the moment I ask it to, I have concluded that the hardware of the iMac G5 is just fine. The problem seems confined to the system software and/or associated networking files that are unique to the iMacG5 Music volume. I just don't know what those files could be, or where the problem lies, so I've issued this call for help.
Let me add one more little twist to this puzzle which baffles me even more. I use external LaCie Firewire drives as clone backups of my Macs. As part of my trouble-shooting process, I booted up from the cloned versions of the iMacG5 JMB volume and the iMacG5 Music volume. What I learned surprised me!
The iMacG5 JMB clone worked just fine in making a fast network connection to the MacBook Pro, as well as sharing the screen of the MacBook Pro. I expected that. What I did not expect was that the iMacG5 Music clone was also able to make a fast network to the MacBook Pro, as well as share its screen!
Yes, that's right. It's weird! Screen sharing works OK when I start-up from the clone of the iMacG5 Music volume, but it does not succeed when I boot up on the source itself! I was surprised to find that out, but I'm glad I did.
(Over the past few days since I executed the last clone, I did use Drive Genius to de-frag the source volume, and maybe that has contributed to the problem I am now encountering. But it's hard to say, since nothing else seems to be amiss.)
One solution, I suppose, would be to sync the clone back to the source. But, before I do that, I'm just wondering if anyone has a clue as to the nature of this problem on the source volume and what I might do to remedy it—short of re-installing the system software or restoring from the clone. Anyone have any insight to this problem?

CORRECTION #2:
Ignore the previous "CORRECTION" post.
Oops, excuse me, I wrote that sentence correctly the first time.
I was trying to point out that the ability of the iMac G5 computer to connect quickly and effectively to the PowerMac G4 when booted up into the iMacG5 Music volume was an indication (to me, anyway) that there is nothing wrong with the computer's hardware, nor its network connection ability, but that the problem lay somewhere in the files/settings used to connect to the MacBook Pro, which it cannot accomplish.
This is what happens when I get engrossed in one of these technical morasses and it ***** me into its vortex all through the night... time for bed.

Problem using file sharing and screen sharing in Leopard

I have Mac OS 10.5 Leopard installed on 4 computers in a Home Network and have a problem with sharing files and using screen sharing. Here is my setup.
MacBook Pro with my logon ID
MacBook Pro with my fiancee's logon ID
Mac Mini with both of our logon ID's
Mac Pro with both of our logon ID's
The problem I have is I am able to access the Mac Mini computer where we have an external Hard Drive connected for data. She is also able to access it. The only problem is we have it set up to only share this external USB drive. Yet for both of us it shares the external drive along with the internal Macintosh HD. Fortunately this is not a very big deal but since I'm not sharing all those drives why is it doing this?
Also, I am able to connect from the Mac Mini for example to my MBP and vice versa for screen sharing along with file sharing. Yet if she tries to connect to the Mac Pro from her MBP and vice versa it won't. It simply times out and will never connect for screen sharing or file sharing but yet the Finder shows the Mac Pro. We have a 2nd hard drive in the Mac Pro which is the one set up for file sharing. I am also unable to connect to the Mac Pro's HD. Everything appears to be set up correctly. For my MBP on the Finder it shows the Mac Pro but once again I am unable to connect to it for screen sharing or file sharing.
Also, not sure if it's related but even for her MBP she is unable to connect to it from any other computer in our network although it's set up for file sharing and screen sharing so I'm not sure if it's related to her logon ID. Then again as mentioned above neither of us can connect to the Mac Pro.
I tried to make the above sound as simple as possible. I am relatively new to networking and of course Leopard but even on the Mac Pro all settings sound the same as on the Mac Mini where we can both connect to. The only big difference is on the Mini we are connect to a USB external drive, on the Mac Pro an internal drive. Is there something I could have overlooked or are there known issues with Leopard's sharing features?
We both have .mac but since we are using this on an internal network (some wi-fi, some wired, all through an Airport Base Station Extreme) I would think this has nothing to do with Back to my Mac.
I appreciate any help with the above.

FaceTime doesn't do any of that, so I'll assume you mean Messages.
From the Messages menu bar, select
Video ▹ Connection Doctor
In the window that opens, select
Show: Capabilities
There should be a checkmark on the line with the words "1-on-1 video chat." Select
Show: Network Status
You should have two green dots.
Make sure that you and the other party meet the applicable requirements shown in these support articles:
Share your screen
Requirements for audio chats, video chats, and screen sharing
See also:
Fix video chat issues

HELP: Problem accessing host Mac MSL Mini using "Screen Sharing"

I have screen sharing enabled on my mother-in-law's Mac Mini so I can access it with Chicken of the VNC.
There are 2 user accounts, one Admin and the other regular. The problem is that when Chicken Of the VNC connects and I choose one of the accounts and log-in the connection terminates and I have to close Chicken of the VNC and re-connect.
Is there something in Sharing/screen sharing that needs to be set so the connection will not terminate when switching account .

From Finder help on screen sharing...
-=-=-=-
If you can’t share computer screens
If you’re having problems sharing your screen with another computer, or sharing the screen of another computer, there are several things to check.
Here are things to try if you can’t share screens:
Make sure screen sharing is turned on and you have set up sharing permissions on the computer whose screen you want to share.
Sharing your screen with other computer users
If you’re trying to share the screen of another computer, open Sharing preferences on that computer and make sure you’re in the list of users who have been given permission to share that computer’s screen.
Make sure neither computer is in sleep mode. A computer can’t share its own screen or share the screen of another computer if it’s in sleep. Adjust the computer’s settings using Energy Saver preferences.
If you’re using Back to My Mac to share screens, make sure it’s turned on on both computers.
Sharing your computer’s screen using Back to My Mac
Make sure both computers are connected to the same network, or if you’re sharing screens using Back to my Mac, make sure they’re both connected to the Internet.

Problems using iPhoto via Screen Sharing

To deal with our family's ever-growing photo library, I bought a new Mac Mini with a jumbo hard drive. For now, I want to run this as a headless server so that whoever wants to can work with the photo library from whichever of our other Macs is handy, so I've set it up with Screen Sharing.
So far so good, I've copied the iPhoto library there and things seem to work well except for one important detail: When I try to see/edit the detail of any photo, I just get a black screen! Or rather, the iPhoto window contains a big black rectangle where the photo should be. If I touch the zoom control, the navigation mini-view shows up correctly, but I still can't see the picture itself. Oddly enough, if I look at the detail of a video, I can see the first frame (but no more than that, the "play" button doesn't do anything).
I'm running Mac OS X 10.6.7 on both machines, iPhoto '11 (9.1.3) on the server.
I realize that I can access the photo library directly from iPhoto on the "client" using iPhoto's built-in sharing mechanism, but that won't give me full control of the remote photo library.
Has anyone else experienced this?

Do you see the same if you're working directly on the Mini? Do you see anything in the middle of the black screen? Maybe something like this:
Click to view full size
If so then that's an indication that the file path to the original file has been broken.
So make a temporary, duplicate copy of the library and apply the two fixes below in order as needed:
Fix #1
Launch iPhoto with the Command+Option keys held down and rebuild the library.
Select the options identified in the screenshot.
Fix #2
Using iPhoto Library Manager to Rebuild Your iPhoto Library
Download iPhoto Library Manager and launch.
Click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File ➙ Rebuild Library menu option
In the next window name the new library and select the location you want it to be placed.
Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments but not books, calendars or slideshows. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.
NOTE: You do know that you can connect an external HD to the Mini and let the other computer log into it and access the library on the EHD for full access to the photos, right? However, doing so wirelessly is dangerous due to dropouts that can occur and if they do while the library's database file is being written to the database can be damaged. So if you're wirelessly connected between the two Macs screen sharing would be the safest way to go. If you're wired then the other method would be optimal.
OT

Screen Sharing problem - is it a security problem?

Similar Messages

Maybe you are looking for