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ICS on a Mac


abete1234
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Hi.

I am having some fun with my brand new Pineapple NANO but there's one thing I cannot understand.

I create an Open AP SSID for some testing and enable Internet Connection Sharing on my computer (currently working on a Mac), sometimes everything works fine and sometimes it does not.

If I connect with my phone to that SSID, I see that sometimes (and I have no control on that) it gets a 192.168.1.x IP address (and everything works) and sometimes it gets a 172.16.42.x IP address (and nothing works).

What regulates this IP assignation?

Thanks for your help,

abete

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Automatic IP designation is usually done via Dynamic Host Configuration Protocol (DHCP), for computers in general. There might be several things that could be going wrong. One thing I can think of is that you have 2 dhcp servers on you network are trying to dish out info and they are competing. Another possibility is there just happens to be another open wifi network near by that you are sometimes connecting to instead of your pineapple.

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if you have access to a computer with nmap:

$ sudo nmap -sU -n --script=dhcp-discover -p 67 192.168.2.0/24
$ sudo nmap -sU -n --script=dhcp-discover -p 67 172.16.42.0/24
I think this will display info about any dhcp servers on the 2 networks 192.168.2.0-255 and 172.16.42.0-255

Its possible that these 2 network ranges overlap each other

Edit: changed to new ip ranges

Edited by fugu
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Thanks but I think it has something to do with this topic:

- https://forums.hak5.org/index.php?/topic/30516-wifi-pineapple-mark-v-on-osx/

- https://forums.hak5.org/index.php?/topic/28552-wifi-pineapple-mark-iv-no-internet-connection/

And it's caused by something I am not understanding in Mac OS Internet Connection Sharing management.

I'll try on a Linux machine using wp6.sh script.

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https://forums.hak5.org/index.php?/topic/37644-getting-the-pineapple-to-work-with-mac/

that is the setup for a tetra on mac but it works with the nano also.

Make sure you have the realtek driver installed and add the last three lines through terminal

defaults write /Library/Preferences/SystemConfiguration/com.apple.nat NAT -dict-add SharingNetworkNumberStart 172.16.42.42

defaults write /Library/Preferences/SystemConfiguration/com.apple.nat NAT -dict-add SharingNetworkNumberEnd 172.16.42.200

defaults write /Library/Preferences/SystemConfiguration/com.apple.nat NAT -dict-add SharingNetworkMask 255.255.255.0

I then had to set the DHCP manually under the AX88x72A in the network preferences to 172.16.42.42 and it works great.

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