Connected to router but no internet

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Del


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Mac Pro 2xQuad core 2.8GHZ
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20" Intel iMac 2.4 Ghz/3G Ram/320HD, Snow Leopard. PBook G4, 1.5Ghz/1.5 Ram/250 HD, Leopard 10.5.6.
How old is your Pro? If it's under warranty I'd return it. If you can't get online when Hard wired to ethernet then there a hardware issue I feel.
 
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2021 M1 Mini, 2020 MacBook Air
I had a similar problem, where my Mac Mini would connect just fine but my daughter's iMac and my Dell laptop would not. Rebooting the router solved the problem for a little while, but it would recur within minutes. Oddly enough, when I examined the router's settings, I found that the "local time" was January 1, 1970. The internet time server it was using must have gone down, or gone away. I gave it a new time server IP address, and the problem was solved.
Granted, this is a weird one, but it shows that any of dozens of settings might be out of kilter. Try to reset the router to factory settings (usually a paper-clip-reachable switch on the backside of the device.) You might also check Belkin's web site for an update to the router's firmware -- if there is a newer version available, install it.
 
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Del


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Right so I think I might be on to something here.

I ran network utility and done a port scan on both Mac's to see which ports were open.

Both machines have the same ports open....

Except for port 88

Port 88 is open on the Macbook (the machine that can surf the web) and port 88 is not open on the Pro (the machine that can't surf the web)
 
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MacBook Air 13" , 21.5" iMac i5, White iPhone 4s 32gig, iPad 3 white 16 gig, i5 Mac Mini
That would mean your firewall is blocking port 88. So unblock it? I'm not aware of any applications that would've blocked the port otherwise. If you can't figure it out i'd be up to format and re-install the OS.
 
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Del


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Too many...
Go take it to an apple store. I had the same problem that you described and it turned out to be a problem with my wireless module(on a brand new macbook pro!) They replaced the whole screen(the wireless module is apparently part of the screen, right on the spot. I was in and out in less than a joyful hour...messed around with their stuff :)
 
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Del


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I went to a mates house tonight and ran a port scan on his imac, sure enough port 88 is open

so im now convinced that if i can open port 88 on my mac pro that i will be back in business.

Anyone know how to open ports on a mac? (where the firewall is off!)

in Linux ye apparently need to edit some file in the /etc folder
 
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Del


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Yeroooo the Mac Pro lives

Finally got it sorted. I downloaded noobproof firewall utility, saw instantly that port 80 was set to 'deny' so i changed it to 'allow' and all was good with the world again.

Big thanks to ripping viper for all the help
 

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