Closing port 631 from other computers

[Joe Zeff]

On 10/31/2014 02:34 AM, Jarmo Hurri wrote:
> I tried disabling cups services, but then printing stopped working.
>

What else do you expect when you disable the printing service?

> So ok, I need a connection from my computer to port 631 for
> printing. But that port should be closed from all other computers. At
> the moment it is open to the outside world (10.13.3.247 is the address
> of my computer in LAN):

If you want to make sure nobody outside your LAN has access to your 
printer, shut the port on your router.