The Apple Support Community will permanently close on November 20, 2026. Starting today, the site will no longer accept new posts and is available in a read-only state.
You can continue to find trusted guidance and support on the official Apple Support site.
We want to thank the community members who have contributed their time and expertise to help others with their Apple products.
The Apple Support Community will permanently close on November 20, 2026. Starting today, the site will no longer accept new posts and is available in a read-only state.
You can continue to find trusted guidance and support on the official Apple Support site.
We want to thank the community members who have contributed their time and expertise to help others with their Apple products.
How do I turn on/off the firewall on my iMac computer running High Sierra 10.13.6?
iMac, macOS High Sierra (10.13.6)
See this article OS X: About the application firewall - Apple Support
To turn off the firewall click on the the box as shown in the screen shot .
Firewall - turn on/off
