nmap scan of my ubuntu computer, output when ran with
139/tcp open netbios-ssn Samba smbd 3.X (workgroup: MEDIAPC) 445/tcp open netbios-ssn Samba smbd 3.X (workgroup: MEDIAPC)
I know what other services are being run but I do not know what is being run on 139 or 445. I did a little bit of googling and found:
Both of these sound like they are related to windows and or file sharing in windows. My computer is set up with a samba share, but nothing I would want broadcast over the web.
I am wondering, are these ports actually open? If so, should they be? From the googling I did it sounded like a lot of people have these ports show up as "filtered" yet mine are showing up as "open".
I am mainly wondering because I have disabled UPnP and figured this would mean I would have an idea of all my open ports. I was not expecting to see 139 or 445 tcp ports open so I wondering if there is some reason for this. Just looking to possibly learn more about my network and increase security.
nmap scan for my router using
Nmap scan report for router.asus.com (192.168.1.1) Host is up (0.011s latency). Not shown: 995 closed ports PORT STATE SERVICE VERSION 53/tcp open domain dnsmasq 2.76-g0007ee9 80/tcp open http httpd/2.0 139/tcp open netbios-ssn Samba smbd 3.X (workgroup: WORKGROUP) 445/tcp open netbios-ssn Samba smbd 3.X (workgroup: WORKGROUP) 8200/tcp open upnp MiniDLNA 1.1.5 (Linux 2.6.38-11-generic-pae; DLNADOC 1.50; UPnP 1.0)