Windows 10: Firewall blocking port forwards regardless of rules

Discus and support Firewall blocking port forwards regardless of rules in Windows 10 Network and Sharing to solve the problem; I cannot port forward to host a server, everything was working fine about a month ago but I never hosted anything between that time and now its broken.... Discussion in 'Windows 10 Network and Sharing' started by Miniloserchamp, Dec 2, 2019.

  1. MINILOSERCHAMP
    Miniloserchamp Win User

    Firewall blocking port forwards regardless of rules


    I cannot port forward to host a server, everything was working fine about a month ago but I never hosted anything between that time and now its broken. I installed Kaspersky within that time period and I think that might have something to do with it but its completely uninstalled now. I have tried putting rules in the firewall and completely resetting the firewall. This is really annoying any help would be greatly appreciated.


    Thanks.

    :)
     
    Miniloserchamp, Dec 2, 2019
    #1
  2. MADAGAC
    MadagaC Win User

    Windows 2012 Server - Creating an exception for a block rule in the firewall

    Hy, ya'll!

    I have to deploy a rule to block all outbound traffic towards port TCP 80 regardless of the destination IP, so I set up an outbound "block" rule in the Windows Firewall specifically against that port. it was straightforward and works like a charm. However,
    I can't seem to find a way to add one single IP as an exception to this rule.

    I tried creating a new rule allowing all traffic to the IP I'm attempting to whitelist but, from what I can gather, the blocking rules in the Windows firewall take precedence over "allow" rules so that explains why it didn't work.

    How can I work around this? All I need is to block outgoing traffic to TCP 80 on all but one IP.

    Thanks!
     
    MadagaC, Dec 2, 2019
    #2
  3. MIKE1127
    mike1127 Win User
    firewall rule to block addresses NOT on an IP list?


    I am just starting to learn the Windows Firewall (working on both Windows 7 and 10) and I'm not impressed with the inflexibility of its rules. I would like to know if


    1. Is there is a way to do what I want with Windows Firewall?
    2. Is there is a third-party firewall that would do it?


    What I want to do is create a rule that blocks outgoing connections, for program X, that are to a destination **NOT** in an IP list.


    Windows Firewall is not very flexible in how you specify IP list rules. When you give an IP list, your rule will match that list... you can't say "trigger the rule for non-matching IP addresses." Therefore to allow outgoing connections to a list, you have to


    1. Change the entire firewall policy to block outgoing connections by default so that you can create an "allow rule" matching your list. This will mess up the rest of your programs.


    2. Somehow combine a block rule and allow rule. Create a block rule for most traffic, with the "allow" rule overriding it when appropriate. However, this doesn't appear to be possible in general. It **may** be possible for connections that use IPSec, I'm not sure. And I'm not sure if I can use IPSec in my application.

    And is there a third-party firewall that can do it? Most 3rd-party firewalls are LESS sophisticated than Windows Firewall, because the use case they are addressing is providing an interface that doesn't require much comprehension. I need one that's actually MORE sophisticated than Windows Firewall.
     
    mike1127, Dec 2, 2019
    #3
  4. TWUTU
    TwuTu Win User

    Firewall blocking port forwards regardless of rules

    Windows Firewall: Doesn't show blocking rules

    Hello!

    Today I've blocked all connections of a program by creating a outbound rule in Windows Firewall. However, I now wish to remove it. The problem: I can't find that newly created rule anywhere in the list. The rule does take an effect, since deactivating the
    Firewall lets the program run properly. I can only see rules in the list that "allow" stuff, but not those who block things.

    What I have tried so far:

    - All filters set to "Show all" within the Firewall

    - Created the same rule again, doesn't show up

    - Created a rule that allows the program, shows up

    Any solutions?
     
    TwuTu, Dec 2, 2019
    #4
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Firewall blocking port forwards regardless of rules

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