On 08/13/2013 10:28 PM, Ken Schneider - openSUSE wrote:
On 08/13/2013 03:52 PM, Andrea Turrini pecked at the keyboard and wrote:
Hi all,
I have checked the open ports in my system and I have noted the following strange thing about port 631:
orodruin:~ # netstat -npa|grep 631 tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1159/cupsd tcp 0 0 :::631 :::* LISTEN 1/init udp 0 0 0.0.0.0:631 0.0.0.0:* 1/init
so it seems that for IPv4 TCP cups is listening on localhost but what about IPv6 or TCP? Why does port 631 belong to init? and how can I restrict it to listen only on localhost?
Best, Andrea
"it" (whatever that is) is already restricted to localhost, what else do you think it is connected to?
0.0.0.0 (and :: for IPv6) stands for all addresses, so why should "it" be restricted to localhost? Netstat says it is listening on all available interfaces, not only localhost (as happens for 127.0.0.1). Moreover, why does init is opening the IPP port for UDP and IPv6? I forgot to mention that this is openSUSE 12.3 with systemd. Best, Andrea -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org