How to adjust TTL on novatel mifi 7730L?
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I have been having some issues lately & was wondering how i could adjust the TTL setting on a mifi 7730L modem.. Of course this is all for research.. Thank you
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Most people ask about this in order to hide more devises behind a a cell connection than the carrier normally allows. Which is not something we can condone.
It's not something that can easily be done in pfSense anyway, you cannot set the TTL value for traffic matching a rule in the GUI.I believe there was a script someone created using netgraph for a similar purpose. I never tested it myself though.
Steve
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You wouldn't be changing it on the "modem" you would be making sure that pfsense as it routes and nats that it doesn't drop the ttl..
This is common method of hiding a nat from some device that only wants directly attached device vs many..
This question has been around for ages and ages.. Here is a very very old thread where you edit the scrub value to set a min ttl
https://forum.netgate.com/topic/4435/modify-ttl-value-for-security-reasons
This will mangle your ttl to be a normal default value, 64, 128, 255 etc.. In your attempt that you have a router with more devices behind it..
