Screen Sharing vs Linksys WRT600N

Hi all. I hope someone here can help me out.
I'm trying to connect to a Mac Mini via a Linksys WRT600N. I can log on and transfer files properly, and screen sharing via VNC works perfectly. But Screen Sharing via Apple's app does not.
All firewalls are off. I have a wired gigabit switch in front of the router, and when I plug directly into the switch screen sharing works perfectly. But when I try and use it via the Linksys wirelessly it does not.
This implies that the computers are all set up properly, but that the LinkSys is not forwarding the screen sharing requests properly. Does anyone know how this might be fixed?
In case it matters, the Mini is running 10.5.8, and my MBP is running 10.6.2.
Thanks,
Jeremy

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.

Similar Messages

Linksys Router and Screen Sharing Problems

Hello,
I know that problems with Linksys routers and ichat video/screen sharing have been covered here and there in this forum, but I couldn't find a definitive answer.
If I can connect find on a LAN between two Macs, but then get a connection error when attempting screen sharing/video over the internet, what settings should I change on the Linksys?
Thanks in advance.

The Linksys Firewall is normally Off by default.
There are those that try Pinging IP addresses for various reasons.
A Malformed Ping (Ping of Death) can bring down your connection.
To a certain extent this does then become a question of whether you are a big enough target or if someone discovers your IP and tries to do anything about it.
Most will be looking for access to Windows computers so your Mac it that sense will protect itself.
In about 6 years on Broadband with a Constant On Connection none of the modems I have had have reported a a Ping attack and I have had thousands of contacts with people via iChat some of which will have my IP in their Logs.
Significant Decrease ? No
8:24 PM Friday; July 25, 2008

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.

ARD no longer shows "control computer", only "screen sharing avail"??

I have been running ARD for well over a year on my iMac to manage several servers that are located far away from me.
I normally use the "copy" feature to push new zip files of our Web site to the server when it is updated. When logging into ARD today, I noticed all the servers are no longer showing "Control". Instead they all have "Screen Sharing Available" listed in the current status column. When I go to copy my files from my local machine to the servers, I get an error: "This Task Will Fail - The remote desktop software is not active on www.servername.com".
However if I select a server and then click the control button, I can still connect to the server fully and work with it?
This has never happened before and I am at a loss as to the issue. I have had some changes to my local setup recently that may be the cause of the problem.
1) Linksys router died, replaced it with a Apple Airport Extreme.
2) Keychain got corrupted. Deleted the login.keychain file to rebuild a new one.
I have restarted my iMac several times, and even restarted the servers to see if this would clear up the problem. No luck.
If I try and drag-copy my zip files to the servers from my local machine after connecting via ARD, the window that asks if I want to send the file ignores my click on the "send" button and does nothing? Before this problem occurred I could easily drag-copy items.
Does anyone know what could be causing this to occur or how I can reset/fix my ARD clients and servers?

Okay I have figured out part of the problem and fixed it, although one issue still persists.
I fixed the "Current Status" issue for my servers by adding port 5900 & 3283 to the port forwarding settings in my Airport Extreme via the Airport Utility application. I don't remember having port forwarding turned on for my (now dead) Linksys router, but I could be mistaken.
Now I have a different problem. When I go to "copy" a file from my local machine to a remote server, I get a message that says "This task will fail: A console user is not logged in on www/servername/com"
If I log into that computer first, I am able to copy items, but I remember being able to copy items to my remote servers before without having to first sign into them? Am I mistaken on this or have I uncovered another problem?
Any help appreciated.

Screen sharing questions

Merry xmas everyone.
I have a few questions I hope you can answer.
I just discovered screen sharing between my mac mini and macbook laptop via a physical ethernet connection using a linksys router (no wifi).
I go to the finder and see the other computer and click share screen, and it shows up beutifully. But without asking for a user name and password. I tried logging in from a guest account and it then asked me for a user name and password. So just to make sure for my peace of mind, both machines have the exact same user name and password (and .mac account), so is that the reason they can both connect to each other easily without the need to verify.
Is this share screen even possible via wifi (using Finder and not ichat)? Or just via a hard line connection?
2nd... is there a way to share the audio between both machines? My overall goal is to connect to my main computer from my laptop from my night stand so I can listen to my podcast, and have them marked as listened to, so that I don't have to wrestled with keeping two podcast libraries on two different machines sync to my ipod... ugh.
plus i won't have to drop the extra cash on an ipod dock.
Thanks
have a great new year everyone

1. While screen sharing is it possible to drag a document from the remote screen to the computer you are using?
No, but if you use iChat as your screen sharing tool you can copy the file(s0 manually that way. In Finder you could also simply both screen share and mount the filesystem of the mac.
2. Does screen sharing work over the internet (like web sharing)?
Not using the direct screen sharing abilities. But if the mac you're trying to control is set up to be accessed from the internet (with afp://) then you should be able to enter that address into the "New..." menu item window in the screen sharing application. The application is at: /System/Library/CoreServices.

Screen Sharing issues

I've got VNC working fine for remote access. The problem is I've come across issues where I get disconnected, and the VNC server will never timeout the session. Since OSX seems to only allow 1 VNC connection to the computer, I'm unable to access it until I can get someone to disconnect the session or I have to remotely reboot the machine. I'm sure it's possible to set a timeout for the session, but I can't seem to find this anywhere. Any help would be appreciated.

The Original Poster and I have chatted and now got Screen Sharing between us to work.
In his Linksys WRT54G we set it to Allow Anonymous Pings.
It was already doing UPnP.
No other changes were made.
He has a Buddy who it is not working with he still has to check.
This Buddy has a another computer (Sister's) that does work so the issue may be a Filter in the settings or the device at that end is doing Port Forwarding or DMZ to the sister's computer.
9:30 PM Friday; February 15, 2008

Screen Sharing in iChat stopped working

To begin with, I have iChat 4.0.3 but I do not see any categories for that version.
The screen sharing feature in iChat was a really great tool that allowed me assist my family from remote locations to help them trouble shoot issues on their Macs. This feature mysteriously stopped working after the release of the 10.5.3 Mac OS X update. Prior to that, the feature worked perfectly and was able to connect each and everytime after all the proper settings were configured correctly at each end. Now, the feature does not work at all in iChat. I have confirmed and I am able to use the screen sharing features in "Back to my Mac" so I can still screen share with my desktop at home when traveling using my laptop, but I cannot screen share trying to connect using iChat. I have double checked the proper settings for sharing and those are good, I have double checked the settings in Quick Time preferences and those are set to 1.5 Mbps T1 as suggested. I have also gone back and applied the 10.5.3 combo update to both my laptop and the iMac that I am trying to connect to. The router settings have all been verified and the ports are open. The firewalls are all set and both allow connections using iChat, File Sharing, and Remote Log In. Still, after all of this, the screen sharing feature in iChat will not connect and results in a timeout error after about 15 seconds. Is this a known bug in 10.5.3 and can I expect some relief in the next update? Are there any other tricks that may be applied? This is a feature I relied on pretty heavily and now it is gone. Thanks in advance for any assistance.
I have read several posts regarding the issue of screen sharing in iChat not working properly and I have tried every solution offered in those threads and none of them have worked for me.

Upon further testing with a different iMac user I was finally able to determine that the problem is router related. I am going to go back again and double check the port settings to make sure they are configured correctly. The router that is giving the problems is a Linksys router and the router that tested fine is an Apple Airport Extreme router. I suspect the LInksys router probably needs to be tweaked further to get it to work properly.

IChat Screen Sharing Keeps Disconnecting

I recently bought my first Mac and not so good with all the tech talk but I'll try my best. So I was trying to do Screen Share via iChat with a friend who has a 24" iMac with Mac OS X Leopard. I have a 13" MacBook Pro with Mac OS X Snow Leopard Version 10.6.4. Anyways we have tried to connect both ways, screen sharing her's and mine and it doesn't work. It'll disconnect after about 2 seconds, I can hear the audio sometimes and it'll say "Screen Sharing with ____" and then disconnect. I have screen sharing enabled. I don't know if it has anything to do with my router but I'm with Verizon and they provide my wi-fi. I just checked the error log and it says no errors. Thanks to all who try to help me out.
Message was edited by: HuggyLowDown

Hi,
Welcome to the  Discussions
Since the original Post some info came to light that certain ISPs do not seem to allow VNC conncetions. (his/her ISP Verzion is one of these)
iChat Screen Share is made up of two parts.
An Screen Share over the VNC Protocol and an Audio Chat alongside.
As Audio Only chats and Video Chats use the same ports then if you cannot Video or Audio Only chat then Screen Sharing also will not work.
If the Audio part fails then most likely you will get the Pop Up.
I have also seen the Pop up show up if one end has not set the Screen Share Enabled item in the Video Menu (Selecting this toggles the tick On and Off and it has to be ticked).
If a person has Not turned On Screen Sharing then can in fact start the Screen Share as long as they are only sharing Their Screen. (They can not ask to see the Buddy's Screen - nor can the Buddy Start the Screen Sharing).
DOS or SPI will be in the router.
Some devices have it as separate items.
For Instance on a Netgear device it is in the WAN set up page in the menu down the left.
Same for Sagems
Some include it in the firewall.
In this case an Example would be a Netopia which has a 4 level firewall in which High and Medium has both SPI and DOS.
Also a Linksys (on those that have a firewall option in the Security page) have SPI and DOS in the firewall but little info on the screen or in help to tell you
8:58 PM Thursday; October 21, 2010
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

Screen sharing on local network - broken on snow leopard

I will try to be clear:
problem is: cannot get a screen sharing window on mac mini when accessing from macbook pro on local network. Problem began after clean install on snow leopard all computers.
setup: 1 mac mini, two macbook pros (1 is 1st gen, 1 2nd gen), all connected through Airport Wireless N basestations.
filesharing works fine. all computers recognised.
when i connect to screen sharing, blue bar comes for a minute, then goes off, then on again, then after a couple more minutes just disappears. screen sharing does not give me an error message, just stops trying. please help, getting fairly desparate.
best,
Charles

This is not normal. Although I have no experience with screen sharing SL-to-SL, I have no problems connecting from my MBP running SL to several other machines running older systems.
What might be different between my setup and yours I'm not sure. But here are a few things:
1) At home, I'm also using an 'n' AirPort Extreme base station, but I'm using 'g' mode, because my MBP is the only machine in the house capable of 'n' speeds. No problems with the PB G4 or iMac G5 running Leopard.
2) At my wife's office, we're using a LinkSys router (not an 'n' router), and no problems accessing the screen of a headless Intel Mac Mini running Tiger.
3) You mention base stations, emphasis on the "s". If you have multiple base stations, that could be the problem. Have you tried simplifying the network so there's only one base station in use?
4) What settings are you using for Screen Sharing in System Preferences -> Sharing? Look both in the main window and in the window that pops up if you push the Computer Settings button.

IChat screen sharing wireless, need help

I have a workbook pro, my son has a workbook. when at my house Ichat works great. we are able to I-chat all features. however... not much point if we are in the same room.
When he goes home we are no longer able to screen share. and we can not screen share when we are both at his house. I need this feature to work (or one like it) I teach him math and we are planning on using the bamboo pad to write equations we can both see (he has a pad too.)
I am sure that the problem is differing setups with our wireless routers. he is using a motorola wirless router, I am using a linksys. (the motorola was originally mine, then I went heterogenous since I was also using a linksys print server and a linksys range expander (no longer in use)
where do I start looking?

Hi,
Welcome to the  Discussions
In the set up pages of the Linksys go to the Administration page.
Enable UPnP (Disable any Port Forwarding, Port Triggering or DMZ in Games and Applications)
In Security make sure the Block to Anonymous Pings is Off and also that the Firewall is Off.
If the Motorola routes then get him to do the same at his end.
iChat 4 uses 20 ports. One of these is Random - the one that handles the Screen Sharing part.
Port Forwarding and port Triggering cannot handle this random port and DMZ is too insecure.
8:53 PM Friday; August 21, 2009
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

Sharing and Screen Sharing suddenly become flakey.

I've been ignoring this problem for a while, but it bugs me and I'd like to figure out what is going on.
My G4 733 that for years has shown up and worked on my other computers as Shared in the side bar and allowed screen sharing has decided to start behaving oddly.
Sometimes it works just fine. Sometimes when I connect to it it shows "Connecting…" and then disappears. Sometimes it functions fine as a fileserver, and then disappears when I try to use screen sharing.
Oddly, I can always connect to it properly using "Connect to Server…" and the IP address (it has an assigned address) and I can always control it with Apple Remote Desktop. Even shows up on the ARD scanner.
This is true for both of my Snow Leopard machines (MacPro and MacBook).
G4 is running the same 10.3.9 it has had since it released. Nothing is ever changed on it (it a web and FTP server). I did upgrade the firmware of my Linksys WRT310N, that may have been around when it went wrong.
I've checked the usual things, permissions, disks and network settings…
No idea what would cause all this.
Thanks to anyone with ideas.

Neal Bridgens wrote:
My G4 733 that for years has shown up and worked on my other computers as Shared in the side bar and allowed screen sharing has decided to start behaving oddly.
Sometimes it works just fine. Sometimes when I connect to it it shows "Connecting…" and then disappears. Sometimes it functions fine as a fileserver, and then disappears when I try to use screen sharing.
Oddly, I can always connect to it properly using "Connect to Server…" and the IP address (it has an assigned address) and I can always control it with Apple Remote Desktop.
Same thing happened to me with an eMac running 10.4. I found this thread (see below) a short while ago, did what it suggested, and the problem went - at least in the short time since.
Go to the Sharing Pane/Services and turn each service OFF with the Stop button, waiting for it to 'take'. Then click on Start, and wait again.
Here's the other thread:
*"If you have trouble networking two computers (can't connect with Sidebar method or Go…Connect to Server method) try this workaround:*
*"When enabling or disabling Personal File sharing (or other Service) under the Services tab of the Sharing Preference pane, always click on the Start/Stop button, and wait for several seconds until you see the change effected before quitting the Services tab. Do not, repeat not, directly tick or clear the checkbox for the item - you may create a false status indication for this item."*
Good luck,
Chris Adams.

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 and multiple users

I have an iMac at home that is used by multiple family members. I have multiple logins enable so it is common to have 2-3 accounts logged in at once. I would like to use screen sharing to connect to my account even when one of the kids is logged into their account.
I started by looking at the vnc processes. There is one process that run as root:
root 21792 0.0 0.0 2437128 1736 ?? Ss 12:25PM 0:00.02 /System/Library/CoreServices/RemoteManagement/AppleVNCServer.bundle/Contents/Su pport/RFBRegisterMDNS
Then there is another process for each person logged in:
username 22006 0.0 0.3 2734876 13964 ?? S 12:33PM 0:00.29 /System/Library/CoreServices/RemoteManagement/AppleVNCServer.bundle/Contents/Ma cOS/AppleVNCServer
So I have two questions. One is how can there be three processes running that listen on the same 5900 port at the same time and how does it decide which one to connect a vnc client to? My second question is how can I prevent the AppleVNCServer process from starting for each user. I've tried killing those processes but they respawn immediately.

Hi
Thank you for your answer. Sorry to have been unclear - I'll give it another go :o)
Here is what I am trying to do:
I have 2 users (Plex and Ursus) that I want to have logged on at the same time. Plex will be "in the front" i.e. that is the screen that is seen if you are at the mini. Ursus is a user that is logged on but you cannot currently see (i.e. in the back as it where). I would like to work using the user Ursus (to, for example, rip a movie from a DVD (that I own of course :o).
Using file sharing would mean that I have 2 machines running and that I need to copy all the files from the one machine to the other, not exactly what I want but manageable.
I have managed to get this "partly" working - I am using Vine Server for Mac (http://www.testplant.com/products/vineserver/OSX) which allows me to start a VNC server on e.g. port 5901 and then screen share to that session. If I setup the second user (Ursus in this case) to use this server then I can connect to the "back" user. The only problem being that Vine Server seems to crash with Plex - as soon as I start it Plex just hangs and randomly crashes!
Was that clearer?
Thanks again
Ursus

Airport Extreme is allowing access to screen sharing, file sharing from external IP addresses (some from China, Canada etc)

How to get control over the ports/port forwarding etc in Airport Extreme?
How to make AE drop packets to certain ports from external ports. Or create whitelist/blacklists?
I figured out where the MAC filtering is! (It is inside the Timed Access Control). I wish it had a list of connected device and allowed me to select, name and add them.
I am getting requests from Chinese IP to the screen sharing ports forwarded to my iMac. Had requests to other ports as well. There was one IP address from CANADA too.
I want to open file sharing for local use only.

Why is Airport Extreme forwarding requests for screen sharing from external ip addresses to my imac? I don't have a public address, nor use dynamic dns service, and I have removed the server app (at least I think I have, but Apple Store doesn't think so).

Can I display EyeTV's live TV over HDMI-out and be able to see my desktop using screen-sharing on a headless mac-mini used as a media-box?

Hi,
I'm thinking of buying a new mac-mini to replace my current one which acts as an iTunes server and records TV programs using eyeTV. I connect using screen-sharing/VNC to be able to do stuff on it (like handbrake etc.)
I have eyeTV with a satelite receiver and I want to change the setup so that:
- the new mac-mini continues to work as an iTunes server (and handbrake workhorse)
- I can use the HDMI output (inc. audio) to show eyeTV's live TV full-screen app
- I can connect using screen-sharing/VNC to the mac-mini and see my normal desktop to be able to maintain it etc. but this is a headless display (no screen is connected to the display-port).
- recorded media I'd play through the appleTV2 still + rentals etc. unless anyone knows if eyeTV software can offer up iTunes content? I don't like the eyeTV recordings in general as it seems very slow to me for access when there are lots of recordings and wouldn't be available in other apleTVs in the house AFAIK.
The main benefit that this gives me is that I'd no longer need a seperate satelite box to watch live TV and can add more eyeTV hardware to get additional TV channels all through the same HUD on the TV for ease of access.
Does this seem possible in theory & practice (ie are there any gotcha's to consider?)
- can I force the HDMI output resolution to 1080i as I go via an amp to the TV and the appleTV2 drops to low-res in this configuration so I have had to find a workaround for that.
- does the mac-mini have IR input that can be programmed?
- Does eyeTV software remain stable for long periods?
- Does the HDMI out have any handshake issues that would need a reset of the display (somehow)?
thanks in advance for any thoughts/contributions
Lee

I think the easiest way to do this is to have the EyeTV app running in one user account and sent via HDMI to the TV, and use a separate user account for Screen Sharing. Both logins can be active at the same time and with Lion you can connect via screen sharing to which ever login you need.
With regards to the Mac video resolution changing, when it is not the current input on your AV receiver. This is 'normal', if the Mac sees no signal it drops down the a lower level. What you need is to buy a HDMI Detective Plus which tricks the Mac in to always seeing a signal and hence it will not drop down the resolution. See http://www.gefen.com/kvm/dproduct.jsp?prod_id=8005
The Mac mini does have an IR receiver. This can be used with the EyeTV app, iTunes, and similar. Yes I believe EyeTV would run for prolonged periods quite happily, it is has been around for a long time and had most of the rough edges polished off. However one issue you will have to deal with is that it does not automatically update its program guide data. For this you might have to write or modify an AppleScript. Elgato support or their user forums will be a lot of help.
You can set EyeTV to convert recordings to an iTunes (Apple TV) compatible format and then delete them from EyeTV.
The HDMI Detective should solve your handshaking problems.

Screen Sharing vs Linksys WRT600N

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