MacOS – Enable SSH server on different network interface

macosNetworkssh

I enabled "System Preferences" -> "Sharing" -> "Remote Login". The dialog is telling me

To log in to this computer remotely, type “ssh user@10.11.12.13”.

And this works fine on the 10.x network. However, I have two network adapters in the system, and I want to connect via SSH on the other network. How do I make the SSH Server open port 22 on all network interfaces?

Best Answer

I think this message should be reworked since the sshd daemon listens on all network interfaces and this just tries to show the same IP address as the default IPv4 route to the internet as one address that could be used.

You should be able to ssh in on all IPv6 and IPv4 addresses on the Mac irregardless of what this message says.

Unless you've modified your sshd configuration or network firewall, this should work out of the box. If you port scan one of the addresses to find it's not listening - then check firewall before you check the ssh configuration.

Also, the system logs can show you that ssh is listening and processing connection attempts, but this probably is just an imprecise message causing you to worry needlessly.

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MacOS – How Do I Disable Remote Management and Enable Screen Sharing

I found the following code in a file I didn't open for a long time. It enables Remote Login on a remote device. Save the script somewhere (from now on referred to as /path/to/script/). Copy the script to the other device.

tell application "System Preferences" to set current pane to pane "com.apple.preferences.sharing"
tell application "System Events" to tell process "System Preferences"
    click checkbox 1 of row 6 of table 1 of scroll area 1 of group 1 of window "Sharing"
end tell

This enables remote login. Now, to disable remote management and enable screen sharing, use the same script, but remove the 3rd line and add these 2 lines:

tell application "System Preferences" to set current pane to pane "com.apple.preferences.sharing"
tell application "System Events" to tell process "System Preferences"
    click checkbox 1 of row 7 of table 1 of scroll area 1 of group 1 of window "Sharing"
    click checkbox 1 of row 2 of table 1 of scroll area 1 of group 1 of window "Sharing"
end tell

To copy this script on the remote device, use scp (secure copy). To use scp type
scp /path/to/script username@IP.of.other.device:/some/path
OR
scp username@hostnameOfDevice:/some/path/
The second option (using the device hostname) requires that the devices are on a computer-to-computer network, so it will not work on a normal wifi network. You will see a prompt requesting the password of username. When you type the password, you will not see any text appear (obviously to prevent people from seeing the password).

Once it is copied, remotely log into the device:
ssh username@IP.of.other.device
OR
ssh username@hostnameOfDevice
Again, the use of the hostname requires computer-to-computer network. Once logged in, run the script using osascript /some/path/theScript.scpt (remember that using scp we copied the script to /some/path, this will be different on your device). This will disable remote management and enable screen sharing.
Good luck!

Web and outbound ssh stopped working but ping and other network services work

Fixed by removing old NetNanny extensions as suggested in https://discussions.apple.com/thread/2296455

Best Answer

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MacOS – How Do I Disable Remote Management and Enable Screen Sharing

Web and outbound ssh stopped working but ping and other network services work

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