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iptables set TTL command not accepted

Posted: Sun Mar 21, 2021 1:25 pm
by RuralBrutal
Thanks in advance for anyone taking the time to read.

I bought the ProntoNetworks 4G Modem PP14O and I am being throttled by Tmobile. I have tried to search how to avoid being throttled by the ISPs and it seems the only success comes from setting the TTL to 65. I am having trouble because there is no setting for TTL on the GUI. The modem it uses is the Quectel EC25, the GUI is a clone of the Asus N56U. There is a Console emulator on the GUI and I am able to send commands.

I have tried sending the following variations of the command unsuccessfully:

iptables -t mangle -I POSTROUTING -o <ModemName> -j TTL --ttl-set 65

setting <ModemName> to:
wwan0
usb0, usb1, usb2, usb3
ttyUSB0, ttyUSB1, ttyUSB2, ttyUSB3

reply is "iptables: No chain/target/match by that name."

I am thinking that I just do not know what the modem name is but to be honest I am not at all knowledgeable and I have gotten this far by reading forum posts and I need detailed instructions to get anywhere.

Am I on the right path here?

Re: iptables set TTL command not accepted

Posted: Mon Mar 22, 2021 1:17 pm
by Didneywhorl
They may not have the mangle command on that router for iptables.

Can you putty into it (SSH) and send the command that way?

I'm not familiar with that router.