Windows 10 Defender blocking FTP connections to FileZilla Server

  1.    14 Jun 2018 #1

    Windows 10 Defender blocking FTP connections to FileZilla Server

    Hi, I am running Wnidows 10 with a FileZilla Server. I cannot connect to the server when inbound rules are set to default (no rule, no access). If I set inbound rules to "allow", i can connect to the FileZilla Server.

    Inbound rules
    Name Profile Enabled Action Override Program
    FileZilla Server Interface.exe All Yes Allow No FileZilla Server Interface.exe
    FTP Server (FTP Traffic-in) Private,Public Yes Allow No svchost.exe
    FTP Server Passive (Traffic-in) Private,Public Yes Allow No svchost.exe
    FTP Server Secure (SSL Traffic-in) Private,Public Yes Allow No svchost.exe

    What could I be missing?

      My ComputerSystem Spec

  2. bro67's Avatar
    Posts : 5,563
    Mac OS High Sierra 10.14.3 Beta (18D21c)
       14 Jun 2018 #2

    Highly doubt that Windows 10 is what is doing the blocking.
      My ComputerSystem Spec

  3.    15 Jun 2018 #3

    Hey mikenyc,
    IIRC ... Those three FTP Server inbound rules are for IIS FTP, which use ports 20,21 and if you're using the same ports for FileZilla, that might be what's causing the issue. If you have't already, try using a custom port range for FileZilla.

    1. I use FileZilla FTP Server and the only inbound rule i have is ....
    FileZilla FTP Server Private Yes Allow No %ProgramFiles% (x86)\FileZilla Server\FileZilla Server.exe
    2. I use a high custom port range (example: 51000-51005)
    3. I don't have IIS FTP installed.
      My ComputersSystem Spec

  4.    15 Jun 2018 #4

    Then how is it working when I take down Defender for the public domain? Or if I change the default for inbound by make inbound always work.

    My client is using port 21. So if there is a conflict with IIS FTP, wouldn't it still block Filezinna with Defender off for public domain?
      My ComputerSystem Spec

  5.    15 Jun 2018 #5

    There are 3 types of connection for FTP each use different ports what are the type settings your using?
      My ComputerSystem Spec

  6. bro67's Avatar
    Posts : 5,563
    Mac OS High Sierra 10.14.3 Beta (18D21c)
       15 Jun 2018 #6

    Defender is not the firewall, it only deals with Malware. If your Firewall rules are too restrictive, your provider blocks port 21 outside of your LAN, there are a few variables. Inside your LAN, you really do not need the firewall enabled if on a private network. Out in the wild on a public network, you do need your firewall enabled.
      My ComputerSystem Spec


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