How to check if a VPN is installed on a computer
On a Mac a VPN can come in two forms.
The first is as a network interface visible in System Preferences. You can see one at the bottom of the left-hand pane in the screenshot below :-
The second type is run as an application. Public VPNs and some corporate VPNs run this way. All of these tend to place an icon in the menu bar to allow for connecting an disconnecting easily. Look for that.
Your problem is much more likely the firewall on computer 2. Go to the Security & Privacy preference pane in System Preferences, click on "Firewall", click on the lock in the bottom left corner and enter your password to allow changes.
Now click on "Firewall Options". You will probably find "stealth mode" enabled. Deselect it and click "OK".
Now do your test again.
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user9222646
Updated on September 18, 2022Comments
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user9222646 over 1 year
I have computer 1 and computer 2.
I can't ping 2 from 1.
But I can ping 1 from 2.
I think that a VPN is installed on computer 2.
How to check if this is the case ?
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Seth about 6 yearsIt's more likely that computer 2 is just running some kind of firewall that prevents a ping.
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user9222646 almost 6 yearsBoth computers are Macs, do you know how to check for VPN on a Mac