Is my Macbook Pro safe when I'm on a cabled router?

[Atomant669]

Hi I am just wondering I plug to a cabled router at home for internet access. How can I be sure that my contents in my macbook is safe and not shared and being accessed?

 

[simsaladimbamba]

Disable file sharing in System Preferences > Sharing > File Sharing if you are concerned about someone on the same internal home network reading your files.

Mac Security Suggestions by munkery​

 

[miles01110]

Hi I am just wondering I plug to a cabled router at home for internet access. How can I be sure that my contents in my macbook is safe and not shared and being accessed?

Disconnect it from the internet entirely.

 

[Atomant669]

Okay, I see that the 'file sharing' is turned off by default? Which means I'm safe for the past few weeks i'm on the computer?

Also, what kind of information would the system administrator of the cable routing network have access to?

 

[Modernape]

You should make sure the firewall is enabled too.

 

[simsaladimbamba]

Also, what kind of information would the system administrator of the cable routing network have access to?

None, except your IP and MAC address maybe.

 

[4np]

If your router is doing NAT (you MacBook Pro has an ip address distributed by your router in one of the local ranges) you're already relatively safe as your MacBook Pro can only be accessed by other computers on your LAN. For added security enable the firewall (if it is not already enabled) and disable file sharing...

ps. local ranges are:

10.0.0.0 through 10.255.255.255
169.254.0.0 through 169.254.255.255 (APIPA only)
172.16.0.0 through 172.31.255.255
192.168.0.0 through 192.168.255.255