performing netstat -tulpn i have this exit code
Code: Select all
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 661/cupsd tcp6 0 0 ::1:631 :::* LISTEN 661/cupsd udp 0 0 0.0.0.0:68 0.0.0.0:* 784/dhclient udp 0 0 0.0.0.0:631 0.0.0.0:* 662/cups-browsed
1) there is something opened on internet? i know 127.0.0.1 is localhost, what 0.0.0.0. is? i've read is th internet access, so there are internet access trough those ports?
2) there is any security issue with those ports on my lan if an untrusted device will connect?
3)how can i improve my security with internet and also with the lan?