PC to iMac computer-to-computer network

Hello all,
I just purchased a Toshiba laptop with Vista OS and am trying to connect wirelessly via the computer-to-computer airport card connection in my iMac G5. I can connect fine with an iBook. But while my PC can see my iMac and registers a strong signal, it cannot connect. I've looked through several posts about sharing files across platforms, but haven't found any solutions to this - if there is one. Anyone with ideas? Thanks so much!

In your network configuration, you are using OS X's "Internet Sharing" feature to share the iMac's Ethernet Internet connection, wirelessly, using the iMac's built-in AirPort Extreme card to the PC...correct?
If so, let's double-check your Internet Sharing setup...
Enable Software Firewall - iMac
System Preferences > Sharing > Firewall
- Click Stop to start the software firewall
Setup the Network
Cable Modem > (Ethernet cable) > [Ethernet port] iMac > (wireless) > PC
Setup Port Order - iMac
System Preferences > Network > Show > Network Port Configurations
- Verify that "AirPort" and "Built-In Ethernet" are enabled.
- Verify that "Built-In Ethernet" is at the top of the list, followed by "AirPort".
- Click "Apply Now."
Configure the Internet Connection - iMac
System Preferences > Network > Show > Built-In Ethernet > TCP/IP
- Configure IPv4: Using DHCP
- Configure IPv6: Automatically or Off
Enable Internet Sharing - iMac
System Preferences > Sharing > Internet
- Share your connection from: Built-in Ethernet
- To computers using: AirPort (checked) (Note: Uncheck all other entries in the list.)
- AirPort Options
-- Network Name: <anything you want>
-- Channel: Automatic
-- Enable encryption (using WEP) (optional)
-- Password: (optional)
-- Confirm Password: (optional)
-- WEP Key Length: (optional)
-- Click OK
- Click Start

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On wake up, my iMac tries to set up a computer-to-computer network

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Howdy,
I recently upgraded from 24" iMac (10.6.2) to a new 27" iMac (10.6.2).
Unlike the old 24" iMac (flawless Airport WiFi) the new 27" will not allow
me to create a Computer-to-Computer WiFi Network...... required to establish
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Have tried all channels 1-13... with no success. (also all combinations with & w/o Security)
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Don Geraldo wrote:
That's funny, cause I had no problems connecting to wifi until I updated to 10.6.4. Now my iMac doesn't see ANY wifi networks
Don,
I can only re-confirm that the Mac OSX 10.6.4 update... has completely resolved all my WiFi issues I had with this 27" iMac (C2D) .... which was endured for some 5.5 months - since its delivery.
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These are the problems I am having:
When my MacPro workstation (which on the network is named "The Beast") wakes from sleep - I get a message saying "there is already a computer on the network with the name "The Beast". Other computers on the network can now find you at "The Beast-2"" and it gives me a new name in the file sharing preferences - even though it is the only computer on the network with that name.
Why is this happening???
The other problem is with BackTo My Mac - When I try to enable it - I get an error message saying "Turn off NAT Addressing" - which I thought was turned off since the AEBS is in Bridge Mode. Why is this happening?
Here is my network setup which consists of the Modem / Router from my ISP - an Airport Extreme Base Station and one Airport Express - which is connected to my MacPro via ethernet. The MacPro does not have an airport card installed and is running OSX 10.6.8 - all other computers / devices are running 10.7.x and iOS6).
VDSL Modem / Router (from Internet provider) with wireless turned off - (so it is not broadcasting a competing wireless signal) - connected via ethernet to my Airport Extreme Base Station.
Here are all the settings on the AEBS and the Airport Express: - I am using Airport Utility 5.6.1 on my Mac Pro running OSX 10.6.8 - so the setup prefs are different than the newer version of Airport Utility found on 10.7.x systems - but both work fine. Although I did notice that the option to allow ethernet clients to connect to the Airport Express does not exist (or I just didn't find it) in the newer version of Airport Utility.
Airport Extreme Base Station is set up as follows:
Wireless Mode: Create a Wireless Network
Wireless Settings:
Allow this network to be extended IS CHECKED
Radio Mode: 802.11n (b and g compatible)
Wireless Security: WPA/WPA2 Personal
Access Control:
MAC Address Access Control: Not Enabled
Internet Settings:
Internet Connection:
Connect Using: Ethernet
Connection Sharing: OFF (Bridge Mode).
TCP/IP:
Configure IPv4: Using DHCP
Advanced Settings:
Logging & Statistics:
Syslog Destination Address is blank (as in nothing appears in this field).
Syslog Level: 5 - Notice
Allow SNMP is CHECKED
MobileMe:
Back to my Mac is turned off - but if I try to turn it on I get an error message saying "Turn off NAT Addressing - which I thought was turned off since the AEBS is in Bridge Mode. Why is this happening?
IPv6:
IPv6 Mode: Link-local only
As stated - my MacPro with no wifi card - is connected via ethernet to an Airport Express which connects wirelessly to the AEBS for network and internet access.
Airport Express Settings:
Airport Settings:
Wireless Mode: Join a Wireless Network
Allow Ethernet Clients IS CHECKED
Wireless Security WPA/WPA2 Personal
Internet Settings: Are grayed out (as in I can't change these settings - I assume because they are being controlled by the AEBS) and read as follows:
Connect Using: Wireless Network
Connection Sharing: OFF (Bridge Mode)
TCP/IP:
Configure IPv4: using DHCP
All other settings are identical to the AEBS.
All other WiFi devices in the house (MacBook Pro, iPhones, iPad's, iMac, Apple TV, Nintendo Wii etc…all are able to connect to the network and connect to the internet - no problem.
Thanks for any insights into what might be causing the double name on the network and why it is asking me to turn off NAT addressing - when both my Airport devices are in Bridge Mode?

I am also having this issue... any updates on this??

IPhone no longer connects to my computer over local network through apps

I've been trying to fix this for months. I've worked with technology and Apple computers for three years. I am by no means an expert but you can believe me when I say I've tried all the basics.
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I checked out the support pages for both apps. I updated everything. I turned off, on, and checked the connections for my firewall. I turned off my security applications and followed guides to remedy blocks they might cause. Nothing worked.
I checked Apple discussions and found people having similar issues but no one had a fix. A few found success but nothing worked for me.
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I recently downloaded Air Playit and ran into the same problem. I set it up on my computer following the instructions. I opened the app. The app showed my computer as a "Computer on Local Network" but when I tried to connect to server, "Connect Server Failed: Cannot connect the server, check the IP, Port and try again." I did and it didn't connect.
Save for this new app, everything worked before. Nothing has worked since that morning FullContol failed (including the new app).
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iPhone 5 iOS 6.1.4: updated as of 06-29-2013
iMac 2007 OS X 10.6.8: updated as of 06-29-2013
FullControl (Full version)
Splashtop 2 (Full access)
Remote
Air Playit
- All apps and applications updated as of 06-29-2013

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If anyone else is having similar issues, check your AntiVandal software and make sure your devices are not being blocked.

Can't create a computer to computer network

Hi,
I have a 1.8Ghz iMac G5 and my partner recent bought a iBook 12". The iBook came with built in airport and so I puchased a airport extreme card for the iMac so we could wirelessly connect the two computers.
The iMac has 10.3.9 and the iBook has 10.4.3.
I've tried everything I can think of but I can't seem to get the computers to see each other. I've created a network on either machine but can't see it on the other.
My thoughts are that there must be a fault with one of the cards, any other ideas?
Thanks
Olivier

Rather than create a computer to computer wireless network it can be easier to use one of the Macs as software base station instead and allow the other Mac to connect to this Mac created wireless network.
On the iMac
System Preferences > Sharing > Internet Tab
Share internet from (anything) via Airport
Your iBook should be able to connect to this iMac created wireless network.
iFelix

I have an iMac(Intel) Desktop computer. I cannot print anything as it is telling me that it is "offline" How do I start it working again? My Lexmark Printer is in working order as I have just photocopied a document successfully.

I have an iMac (Intel) Desktop computer. It will not send a message to my Lexmark printer because it says "offline". My Lexmark printer is in working order as I have just successfully photocopied a document on it.

That message means that the computer cannot see the printer on its network.
Is the printer directly connected to the computer with a USB cable, or is it a network printer (either wireless, or wired to the router with an Ethernet cable)?
Matt

Computer-to-computer Airport network no dice - "self assigned IP address"

I have spent hours reading posts on this and other forums about this problem with Airport, but none of the fixes have connected me to the Internet. My new iMac has a DSL line coming into it and an Airport card. My eMac has an Airport card too. I am not using a base station. The eMac recognizes the network I created, it even allows file sharing, but in the TCP/IP prefs, I get the dreaded notice about how the computer is using a "self assigned IP address and may not connect to the Internet." So I took one user's advie and set it up to use DHTP manually and I typed in an IP address of 10.10.10.x and my "network status" finally went from the yellow dot of death to green, saying I was connected to the Internet. But my browsers sure don't think so. I turned firewall off. Still no help. Do I have to turn firewall off on the iMac, from which the eMac is getting its Airport signal? I need a firewall, right? "Firewall good," right?
The issue was the IP address until I entered a manual one. Now the issue has changed. I am connected to the network, and at least technically to the Internet, according to the computer's ability to gauge such things, but I'm still not online. I have done the "unplug the DSL modem" thing, and unplugged the computers, and turned Airport on and off, trashed Airport prefs from the Library and all the sensible things people have mentioned online. I am hoping some fresh eyes see this. Can it have to do with my iMac's settings, not the eMac I'm having trouble connecting with? I've spent about 12 hours on this with no luck. Thanks,
George

O.K., I tried to launch the specified site in Safari and it never loaded anything or gave me an error message. The blue filled up the address bar to cover up "http://" but it didn't progress further. The IP address it self-assigned is 169.254.60.164. My iMac which should be Internet-sharing is not sending it a proper IP address.
Both computers are up to date with updates. The iMac has OS 10.4.10, and the eMac has 10.3.9 because I still run Classic mode. I don't know enough about computers to know if those system differences would cause a problem in Airport. They both have Airport Extreme cards. Any idea which settings in the source iMac I'm sending out the Internet signal from could cause this problem? I have personal file sharing on, personal Web sharing, and printer sharing.
In my Network preferences, under my SBC DSL, the IP address looks normal, starting with a 75, but under Airport, it starts with 169.254 like the eMac's IP address setting. I don't really understand these technical issues, and I've never dealt with a wireless network before. I guess I can always pony up $180 and use a base station, and problem solved. I would think. But computer to computer Internet sharing is supposed to work, so now I am obsessed with it. Thanks again.

Protection Error - This application cannot continue because another application with an identical serial number is already running on another computer on your network

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This is the first time I have used FCE since installing the Yosemite OS, so I'm thinking perhaps that has something to do with it.
Any ideas?

There have been recent posts appearing about your problem. I'm not sure if anyone has found a solution.
FCE was abandoned by Apple years ago, and they are currently making Operating Systems without regard to how it impacts FCE.
countrynewsman wrote:
I uninstalled and reinstalled FCE...didn't work.
That is what I would try - a fresh install - but your need to use FCS remover (from the same software source as Preference Manager) to make sure you get all traces of your existing installation off the drive prior to doing the installation:
http://www.digitalrebellion.com/fcsremover/
If you use FCS Remover, and reinstall the other problem may be that Apple has apparently removed the Software Upgrade to FCE 4.0.3.
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Hope it works out for you.
MtD

I can not create a computer-to-computer network

I am trying to create a computer-to-computer network to share files between my laptop and imac but everytime I start doing this the computer remains endless waiting in the creation process (both on the laptop and the imac) I switched the security in the meantime from WPA2 to WEP which should be ok as I understood.
So please help what should I do

Don't use WEP - it can be cracked in about ten minutes. Use WPA2, this isn't likely to be the problem.
The method of setting up File Sharing between computers (ethernet or wi-fi) is outlined here:
http://homepage.mac.com/rfwilmut/notes/sharing.html

Remove/Delete a Computer-to-Computer network

I have the same question. This problem has been brought up numerous times in discussion boards, yet it does not seem to have been answered.
Is there a way to delete/remove a Computer-to-Computer network that I created?
iMac G5 Mac OS X (10.4.6)

I tried both solutions to the problem, The Computer-to-computer network still shows up on the Airport dropdown menu at the top of my computer. Although it is no longer listed on my perferred networks on system preferences, I can still access it through the Airport drop down menu. How do I remove the Computer-to-Computer network from the Airport drop down menu also?

Trouble with airport extreme computer-to-computer network

i'm sure this is something pretty obvious, but i recently bought an airport extreme card for my iMac G4 1GHz so as to create a computer-to-computer network with my MacBook Pro.
I set everything up as per http://docs.info.apple.com/article.html?artnum=166640 on my iMac, but when trying to join from my macbook i get "error joining network". Signal level on iMac is fine and the two computers are sitting next to each other.
has anyone any ideas, this is starting to do my head in!!!!
cheers,
stu
iMac G4 1GHz, MacBook Pro 2.16GHz Intel

Can you "see" the new Wireless Network you just created on your iMac from your MacBook Pro?
Did you specify a channel in the range 1-11 that is NOT already in use by a neighboring wireless network? If you have no idea about that, pick a number from 1-11.
For starters, I would NOT use encryption. Get it to work without encryption, then add a 128-bit WEP password.
Try opening Internet Connect on your MacBook Pro to initiate joining your network.

* airtunes with a computer to computer network

I have a iMac with an Airport Extreme card. The iMac has an internet connection thru a cable modem directly connected. There is no base station involved.
I purchased an Airport Express to connect to powered speakers - wanting to use the airtunes feature. I had to create a new network to do this. It works.
The problem is I cannot share the internet from my iMac with the other household computers and play music thru the speakers at the same time. I have to turn "internet sharing" off to connect to the Airport Express network.
I am hoping it is technically possbible to share the internet from my iMac, and play music thr the airport express at the same time - but don't see how to do it. Can anyone help me?? Thanks in advance!!

Thanks!
So let me ask my original question one more time (and
I think this is the correct wording...). Is it
POSSIBLE to connect an AX that is to be used for
airtunes (in another room) to an existing wireless
network (if that network is "computer to computer"
shared internet access)??
If this is a computer to computer network, an ad hoc network between two computers than the answer is no.
If this is a Mac sharing its internet connection via Airport (acting as a software base station) then the answer is probably yes, but you may not be able to use encryption.
iFelix

Computer to computer network: now what?

I have just upgraded from a G5 iMac to an intel iMac, and i am still trying to migrate some files over. Rather than reboot into target disk mode every time, I figured I might as well try this computer-to-computer network thing via airport express. So I created a network on the old computer, and joined it from the new computer. Didn't get any error messages, and both computers show that I'm connected.
But now what? How do I "find" one computer from the other? It's not in the sidebar in finder windows. It's not on the desktop. In the finder if I click the imac icon, inside there is my HD, my idisk, and a folder called network- but that folder is empty.
I'm guessing this is something simple and I'm being dumb, but i'm not sure what to do next. I guess I could just transfer it on a jump drive, but now I want to know how this works...

ok thanks, I'll try that. I guess I should have thought of that.
I turned on sharing on the old computer, and it said "other macs can access your computer by afp:xx or browse for "my computer" by choosing Network from the Go menu in the finder."
I tried the network: browse options first since it's easier than typing a bunch of numbers. I choose Network from the Go menu, and there is nothing there. Doesn't matter if I'm on my regular airport network, or this computer-to-computer one- nothing comes up either way.
But, if I do 'connect to server' instead and type in the afp:etcetc stuff it works.
I guess I just don't understand the point of this computer to computer network. I thought i was connecting the two computers directly- so why do I need to go through enabling sharing, connecting to servers, etc. In target disk mode, the old computer's HD just shows up in the finder- I was hoping for something simple like that. Right now, I have both computer on my airport network. How is that different?

Stuck in Computer-to-Computer network

Hi,
I know this has been asked here before, but I cannot find a solution or answer: I have a Airport network with DHCP, which is also selected as the preferred network. However, occasionally, my new iMac connects to a computer-to-computer network of the same name, which I never created. Then I cannot connect to the internet and I also cannot switch back to the "real" Airport network. I found a workaround but it's cumbersome: Switch to the "real" network, then turn Airport off and back on once.
This never happened on my previous Mac. Does anybody know how and why this happens?
Thanks,
Arnd

Chris,
maybe I was a bit unclear. It seems my iMac sees my network as a 'computer-to-computer' network, although it isn't. There is no other computer. The Airport menu has two entries by the same name in that case, one being the 'computer-to-computer' netweork. After I did my little trick, the 'computer-to-computer' list entry is gone.
It's just a wild guess but it seems like the iMac connects to itself (there's no other computer here). Also, the IP it then picks is not within the range I defined in my router settings. When I switch manually to the 'real' network, it doesn't assign itself a new IP. Therefore I cannot connect to the internet. Only after I switch Airport off and back on, the iMac assigns itself a new (correct) IP and the internet connection works.
Hope this makes more sense.
Thanks,
Arnd

PC to iMac computer-to-computer network

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