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Helpful answers
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by Grant Bennet-Alder,Apr 23, 2016 10:34 AM in response to MacProUser9
Grant Bennet-Alder
Apr 23, 2016 10:34 AM
in response to MacProUser9
Level 9 (60,971 points)
Desktops1. turn off Wi-Fi
2. Pull out the Ethernet cable.
3. Done
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Apr 23, 2016 12:24 PM in response to MacProUser9by lllaass,★HelpfulGo into the Airport Extreme settings and disable internet access for that one device. You identify a device by the MAC addresses for wifi and Ethernet MAC addresses
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Apr 23, 2016 12:23 PM in response to lllaassby MacProUser9,Thanks for your reply. Are you talking about using the Airport Utility? Both of these computers are connected to the Airport router via ethernet cable.
My goal is to keep them both on the same network, so data can be transferred from one to another, but with internet access disabled for one.
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Apr 23, 2016 12:36 PM in response to MacProUser9by lllaass,Yes, you use AirPort Utility. It should ( I do not have a AirPort router but all the other routers I have had has the capability to have internet access restricted to a schedule which you define. it may be under parental controls or similar since it is typically used to restrict internet access to kid's devices.
You enter in the Airport utility settings the MAC address of the devices you want to restrict. If you go to Network Preferences>Ethernet>Advanced>Hardware the MAC address is listed. Yu have to use the MAC address for the Ethernet port that is connect to your network. The Mac Pro has two Ethernet ports and MAC addresses.
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Apr 23, 2016 12:46 PM in response to lllaassby Grant Bennet-Alder,If that does not accomplish what you want, you could also use Parental Controls on an account-by-account basis.
Under the Web heading, you can limit Web access to only a Whitelist of sites -- then leave the list blank.
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Apr 23, 2016 12:59 PM in response to MacProUser9by lllaass,By reading this
it appears that the time restrictions only works with wifi and not ethernet
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Apr 23, 2016 1:02 PM in response to lllaassby Grant Bennet-Alder,Another way to do this is to Manually provide an IP Address in the correct range (so as to be reachable back and forth from the other computer) but make sure the Router address provided remains BLANK.
That way, it can talk directly to the other machine, but when there is Internet traffic, it has no Router to act as its agent on the Internet.
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Apr 23, 2016 6:12 PM in response to MacProUser9by Linc Davis,To be quite honest, what you're trying to do doesn't make any sense, but that wasn't the question. The only way to allow access to the local network while denying access to the Internet is to use the built-in packet filter. It has no user interface and is very difficult to configure. Your only realistic chance of using it is to install a third-party front end. I don't have a specific recommendation. You would have to search for terms such as "ipfw firewall" and "OS X." As always with third-party software, research it carefully before trusting it.
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Apr 23, 2016 6:29 PM in response to MacProUser9by BobHarris,If you are going to setup a manual IP address, you will need to provide an IP address for the router field. But you want to provide an address that is not assigned to any devices in your LAN, and it should be outside the Airport Extreme's DHCP address range so that nothing gets accidentally assigned to that IP address in the future.
System Preferences -> Network -> Advanced -> TCP/IP
This does work. I tried it on my Macbook Pro. I was able to access other system in my home LAN, but I could not access anything outside my LAN.
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Apr 23, 2016 6:56 PM in response to BobHarrisby Grant Bennet-Alder,Just Don't use the very last address in the range -- it is a magical address that does a broadcast to every device in the range. It might be weird.
