Windows 8 and 8.1 Forums


Increasing TTL for access point

  1. #1


    Posts : 8
    Windows 8 Pro x64

    Increasing TTL for access point


    This may be a little difficult to explain, but I'll try my best.

    I have an university connection, which has TTL set to 1. I made an Access Point with my WiFi in laptop, however, I think that the TTL may cause that the Internet connection on my devices which are connected to AP is not working. I believe that changing TTL to a higher number should help, because I made the same thing with my router, and the Internet was working then.

    Is there a way to do this?
    Last edited by perf2711; 08 Jan 2014 at 13:54.

      My System SpecsSystem Spec

  2. #2


    Posts : 70
    windows 8.1


    edit registry and make changes in
    HKEY_LOCAL_MACHINE \SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
    Name: DefaultTTL
    Type: REG_DWORD
    Valid Range: 1-255

    default value for windows is 128
      My System SpecsSystem Spec

  3. #3


    Posts : 8
    Windows 8 Pro x64


    I did that already, but it isn't working, either for ICS and for normal Internet connection :/
      My System SpecsSystem Spec

  4. #4


    Posts : 70
    windows 8.1


    I have an university connection, which has TTL set to zero.
    Even TTL set to 1 is very rare. Keeping default for specific OS is reasonable. TTL set to 0 means that data lifespan expired and is discarded. If TTL is set to 1 this means that system does not want packed to be routed. I am not sure how are you going to network then.
    I think that you should contact your IT and ask about proper settings which in most cases should be default.
      My System SpecsSystem Spec

  5. #5


    Posts : 8
    Windows 8 Pro x64


    My bad, I meant set to one
      My System SpecsSystem Spec

  6. #6


    Posts : 70
    windows 8.1


    Quote Originally Posted by perf2711 View Post
    My bad, I meant set to one
    TTL = 1 probably will not work either as it means that you want to minimize number of hops to 1.
    Just run tracert command from prompt. I would think that TTL = 64 (unix) is conscious minimum but windows default should work well too.

    Note:
    If your university set TTL =1 this means that campus network policy has banned ICS (because efficiently next TTL = 0 so ICS will not work). Now, there are ways to get around this however you will go against your provider policy and sooner or later you will get into trouble.
      My System SpecsSystem Spec

  7. #7


    Posts : 8
    Windows 8 Pro x64


    I am aware of this being banned, however, I just want to have Internet on rest of my devices. I got it working with a router, which has DD-WRT, and using iptables I changed the TTL to 128, at least ping told me it's 128. Now it is showing TTL = 1, no matter what I change in registry.
      My System SpecsSystem Spec

Increasing TTL for access point
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