Yosemite does not allow incoming connections, even if the firewall is disabled

OS: Macbook Air OS X Yosemite10.10.5.

The application of "Security & Privacy" firewall is disabled.

I am able to ping other machines on the same subnet of the Mac, but I cannot ping the Mac from other machines. Using Wireshark to capture packets that I found the Mac has received other machines ICMP packets, but it did not.

I tried to enable "System Preferences '->' sharing '->' remote access connection", but it does not work if I remote connection to other machines.

I have a sneaking suspicion that it worked fine until I upgraded to Yosemite.

Help, please. Thanks in advance.

Try to run this program, copy and paste the result in a response. The program was created by Etresoft, a regular contributor.  Use please copy and paste the screenshots can be difficult to read. On the screen with the Options, please open Options and tick the boxes in the bottom 2 before the race. Click on the button "Report share" in the toolbar, select "Copy to Clipboard" and then paste into a response. This will show what is running on your computer. No personal information is shown.

Etrecheck - Information System

Tags: Mac OS & System Software

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