The risc of opened Samba ports

  1. Posts : 9
    Windows 10

    The risc of opened Samba ports

    Hello, my ISP noticed me about finding opened Samba port on my side. After a review of router setup I've found the port is really opened. I just wanted to make sure if it's real security risk if I use Windows account with good password. I mean if the authorization can be bypassed or broken from the outside somehow. I've also noticed that the user/pass is required even from home network if that device didn't use the same user/pass pair to login to OS.
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  2. Porthos's Avatar
    Posts : 908
    Win 10

    Are you running a samba server from your PC?
      My Computers

  3. MaloK's Avatar
    Posts : 974
    Windows 7


    What brand and model is your router ?

    Depending on that, you may be able to create a Firewall rule or even completely disable samba on your router.

    Personally I like my routers to be completely stealth on the web side. Your ISP mention samba, did they mention which ports ?

    Port 137 (name services) UDP Port 138 (datagram services) TCP Port 139 (session services) TCP Port 445 (direct connection)

    Those are NetBIOS over TCP/IP ports. They should never be allowed on the wan side of your network. If the service is answering, it is considered a point of attack on your router.

    If you are not using any Media sharing to the internet from your network or router. You should close / stealth those ports.

    Use ShieldsUP from Gibson Research Gibson Research to verify which "File sharing ports" are responding on your wan and if you managed to close them.
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