On 12/2/20 3:06 PM, Tim via users wrote:
All normal stuff, although they're listening to any address, rather
than only listening to local addresses. That could be tightened up for
some things, at least. I see no reason for CUPS to listen outside of
your LAN, for instance.
I assume you're referring to the lines like this:
tcp 0 0 0.0.0.0:ipp 0.0.0.0:*
LISTEN root 22447 947/cupsd
That foreign address is just a placeholder. Nothing is actually
connected. The process is listening for a connection and will accept
one from anywhere. It's up to the firewall to restrict that.
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