Sharing my internet connection via Airport

I have an Intel MacPro with an Airport card. It is connnected to the internet via one of its ethernet ports. I am trying to share that internet connection via the Airport card with my Windows XP machine. I was able set up the wireless connection using 128-bit encryption, and successully access websites from my Windows XP laptop. However, it seems that neither AIM nor Yahoo Messenger nor MSN IM on my Windows machine can connect via the MacPro internet sharing. I can only use a web browser on the Windows machine successfully. Is there some additional configuration I need to do get the internet connection sharing to handle other kinds of connectsions, rather than just web pages?
Paul
Mac Pro 266 GHz Quad Xeon   Mac OS X (10.4.8)  

I'll admit that I'm merely guessing here. Are you running the firewall on your Mac? It is possible the firewall is blocking the ports that the messaging software is using. If your firewall is on turn it off and try using the Yahoo and/or MSN messaging software. If it now works see if you can determine what ports are being used and edit your firewall to keep those ports open.

Similar Messages

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    I have been having problems with the internet connection via Airport Extreme which I find it a bit unusual and its still driving me nuts! This is what happened:
    I have lost my internet connection last Sunday evening upon my return from a weekend away from home. The last time I have used the internet connection on my macbook was the previous Friday morning. Prior to the apparent disconnection on Sunday, I have always used my internet connection wirelessly through Airport Extreme (that is connected via ethernet cable to the NETGEAR DG834v2 ADSL modem which had worked beautifully until the problem arose on my return). This wireless internet connection allowed me to surf the internet anywhere in my home.
    However, upon the successful re-connection to the internet via the modem router, I have discovered several new problems. I have tried to set up the internet connection wirelessly again but instead the following happened:
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    So from the above, I cannot connect to the internet properly whether wirelessly or not so I suspect it could be faulty router or could it be airport extreme? I have asked my ISP for an explanation and all they have said is that it cannot be the mis-configuration but could be to do with the power adaptors or the way plugs are set up and suggested I take out all the power plugs (and power surge protector) out to switch everything off, the macbook, router, printer and airport extreme. However, when I have re-plugged them all back in, the problems I have described above still persists!
    Would appreciate any help if anyone here recognises why this is the case and what seems to be the cause of this. If so, what should I do? Though I have written back to my ISP again yesterday for more help so im waiting to hear from them...
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    u2dougal

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    Message was edited by: leino88
    Message was edited by: leino88

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    raxx wrote:
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    Message was edited by: pbranda

    Let's double-check your Mac's Internet Sharing settings ...
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