Increasing TTL for access point

perf2711

New Member
Messages
8
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:

My Computer

System One

  • OS
    Windows 8 Pro x64
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 Computer

System One

  • OS
    windows 8.1
    Computer type
    Laptop
    System Manufacturer/Model
    MSI
    CPU
    i7-4800MQ
    Memory
    32GB
    Graphics Card(s)
    nVidia GeForce GTX 770M
    Browser
    Enhanced Protected Mode IE/protected mode Firefox
    Antivirus
    nope
    Other Info
    OpenNIC/DNSCrypt/VPN/EMET
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 Computer

System One

  • OS
    windows 8.1
    Computer type
    Laptop
    System Manufacturer/Model
    MSI
    CPU
    i7-4800MQ
    Memory
    32GB
    Graphics Card(s)
    nVidia GeForce GTX 770M
    Browser
    Enhanced Protected Mode IE/protected mode Firefox
    Antivirus
    nope
    Other Info
    OpenNIC/DNSCrypt/VPN/EMET
My bad, I meant set to one :D

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 Computer

System One

  • OS
    windows 8.1
    Computer type
    Laptop
    System Manufacturer/Model
    MSI
    CPU
    i7-4800MQ
    Memory
    32GB
    Graphics Card(s)
    nVidia GeForce GTX 770M
    Browser
    Enhanced Protected Mode IE/protected mode Firefox
    Antivirus
    nope
    Other Info
    OpenNIC/DNSCrypt/VPN/EMET
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 Computer

System One

  • OS
    Windows 8 Pro x64
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