Windows 8 and 8.1 Forums


Ports closed; router forwarded ports, firewalls disabled?

  1. #1


    Posts : 9
    Windows 8

    Ports closed; router forwarded ports, firewalls disabled?


    Hey all so I have forwarded some ports on my router with Airport Utility (NAT port forwarding), but using cmd netstat -n the ports I forwarded aren't listed and using online port checkers confirms they are closed. I added exceptions to my firewall (even though it is off), and windows defender is off, and Avast's shields are all off. I honestly have no idea how to open the ports up and haven't found a way to do this using Windows 8 (not pro).

    Anybody have any ideas? It seems like Windows 8 is blocking these ports from opening for some reason. There doesn't seem to be an override function in cmd to open them, either.

    In case you're wondering why I need the ports open, I'm trying to resolve a "request timeout" error when pinging somebody on Hamachi - so I'm trying to open the main ports Hamachi uses (I just want to play Terraria, man).

    Any help would be greatly appreciated.

      My System SpecsSystem Spec

  2. #2


    Posts : 467
    Windows 8 Pro


    Temporarily add your PC IP into the DMZ and try again , see if the internal/external tests then notice the ports open , this will test if it's a router or PC issue....

    Don't forget to take it out of the DMZ after testing...
      My System SpecsSystem Spec

  3. #3


    England, Northamptonshire
    Posts : 536
    Windows 8.1 Pro 64-bit ; Windows Server 2012 R2 Standard


    In addition, make sure that the relevant ports are open on the other side. It's a two way thing

    Josh
      My System SpecsSystem Spec

  4. #4


    Posts : 9
    Windows 8


    Hey guys thanks for the response.

    The funny thing is that Hamachi was working before, but then suddenly stopped working for no apparent reason (weird). Wullail, I don't understand what you mean by putting my IP in the DMZ. From looking online it seems to be a firewall thing, if so, is it a type of inbound/outbound rule? Sorry for the trouble, I'm just not very familiar with this.

    Shadowjk, good point, will check.
      My System SpecsSystem Spec

  5. #5


    Posts : 467
    Windows 8 Pro


    DMZ stands for 'demilitarized zone' , it basically removes that IP address from any form of firewalling , meaning anything can connect to it externally.

    You should have an option in the router settings somewhere to add a single IP address into the DMZ , it's basically a way to make sure it's the firewall/port forwarding thats causing the issue.

    If you add that IP address into the DMZ and it still doesn't work...the problem is elsewhere...
      My System SpecsSystem Spec

  6. #6


    Posts : 9
    Windows 8


    Okay I managed to figure out how to set my laptop to DMZ mode on the router. And surprisingly this fix worked. So somehow forwarding ports doesn't work but enabling DMZ does? Isn't that counter intuitive?
      My System SpecsSystem Spec

  7. #7


    Posts : 467
    Windows 8 Pro


    OK , that points to the fact that either the firewall settings on the router are blocking the incoming/outgoing connection or not all the needed ports to run the game are being forwarded.

    Does your router firewall settings include 'flood protection' as an option? , I found that some games sent a lot of small packets very quickly when trying to connect and this caused the router to block them.

    I turned off flood protection here and it fixed the games I was having problems with.
      My System SpecsSystem Spec

  8. #8


    Posts : 9
    Windows 8


    I didn't even know there was an option like that. But I'll have a look at it.
      My System SpecsSystem Spec

  9. #9


    England, Northamptonshire
    Posts : 536
    Windows 8.1 Pro 64-bit ; Windows Server 2012 R2 Standard


    Wullail is correct in that it points to ports on your side. Just a question, are you using a static IP address on your machine for the port forwarding? Most port forwarding requires it to be forward to a static IP address because of how NAT works.

    If you don't know please upload your ipconfig/all and we will be able to see if you have or not and if not possibly suggest a static address stack to use

    Josh
      My System SpecsSystem Spec

  10. #10


    Sloe Deth, Californicatia
    Posts : 3,908
    Windows 8 Pro with Media Center/Windows 7


    I have the same issue with Port 8080 on my machine which I was forwarding for Open Hardware Monitor Web Server. I installed it on my 2nd machine with a different port, and it fouled up port 8080. My Web server is running, but port 8080 is blocked solid.

    I'll try some of the things mentioned in here, but my Router is whack, it's a Linksys WRT110. I tried re-creating all of the forwarding, but that didn't help.
    WRT
      My System SpecsSystem Spec

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Ports closed; router forwarded ports, firewalls disabled?
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