Listening ports: upd & upd6 avahi-daemon?
by lisamint from LinuxQuestions.org on (#57EYW)
Hi everyone,
I don't know much about ports, so I just need someone to have a look and tell me if there is something wrong/missing. After running 'sudo ufw show listening', the output displays the following:
udp:
40228 * (avahi-daemon)
5353 * (avahi-daemon)
54218 * (openvpn)
631 * (cups-browsed)
68 192.168.8.100 (NetworkManager)
udp6:
49498 * (avahi-daemon)
5353 * (avahi-daemon)
Is there anything above that is wrong or I should close? For example, should I close 'avahi-daemon' on udp6? My understanding is that upd is used by the Linux system and
therefore it is necessary. What about udp6? I digged in a little bit online to find out what it is, but I got confused and still don't really understand whether it is necessary. I am using OpenVPN and IPv6 is disabled, just in case it has something to do with udp6 (I don't know).
Thanks for your help.
I don't know much about ports, so I just need someone to have a look and tell me if there is something wrong/missing. After running 'sudo ufw show listening', the output displays the following:
udp:
40228 * (avahi-daemon)
5353 * (avahi-daemon)
54218 * (openvpn)
631 * (cups-browsed)
68 192.168.8.100 (NetworkManager)
udp6:
49498 * (avahi-daemon)
5353 * (avahi-daemon)
Is there anything above that is wrong or I should close? For example, should I close 'avahi-daemon' on udp6? My understanding is that upd is used by the Linux system and
therefore it is necessary. What about udp6? I digged in a little bit online to find out what it is, but I got confused and still don't really understand whether it is necessary. I am using OpenVPN and IPv6 is disabled, just in case it has something to do with udp6 (I don't know).
Thanks for your help.