USBNetwork: Kindle seems to be behind a firewall (?)

Ruskie_it · 06-20-2020, 06:29 AM

Hi guys,

So I have this new kindle and I have been trying to set up USBNetworking, many years after my last (successful) attempt.
Something is quite not right here...
I am using the default configuration, the only thing I changed is the Kindle Ip address. I have verified the config file is in Unix LF mode.
I also have kterm installed, and when the sshd is up I can run ifconfig -a and it will show me usb0 interface up with the address I want.
FWIW, I have tried both with the default ip address, and with 192.168.1.114 (my home computers being .2 - windows - and .3 - linux).

So I fire up USBNetwork, verify via kterm it is up, plug in the usb cable and... nothing. Neither putty on Windows nor Linux with ssh will get to the Kindle. If I try to ping the Kindle IP I receive no answer, and neither if I try to ping my windows or linux pc from the Kindle. Btw my computers do respond to pings when called each other.

What can it be?
I have generated a public key with puttygen, stored in Unix format (LF) in a text file which I renamed to usbnet/etc/authorized_keys on the kindle, and used the same key to connect from putty (though I don't think that matters: putty doesn't even reach the kindle, it's not that it doesn't like the public key).
No firewall is installed on my computers, so what could it be? I think I followed the instructions correctly...

Thanks!

NiLuJe · 06-20-2020, 10:52 AM

Don't change the IPs?

It doesn't have, and in fact, probably *should NOT* be in your subnet when in USB mode.

Remember that each end of the cable has a different IP. The one you use to setup the network connection on your end is $HOST_IP. The one you connect to on your end is $KINDLE_IP. (Both of those *have to* be in the same subnet).

Ruskie_it · 06-20-2020, 12:17 PM

Quote:

Originally Posted by NiLuJe

Don't change the IPs?

It doesn't have, and in fact, probably *should NOT* be in your subnet when in USB mode.

Remember that each end of the cable has a different IP. The one you use to setup the network connection on your end is $HOST_IP. The one you connect to on your end is $KINDLE_IP. (Both of those *have to* be in the same subnet).

Thanks for the insight Niluje, I actually forgot the network adapter on "my" end...

06-20-2020, 06:29 AM	#1
Ruskie_it Fanatic Posts: 536 Karma: 1000000 Join Date: Dec 2011 Location: Rome, Italy Device: Kindle PW5, Kindle PW4, Kindle 4 NT	USBNetwork: Kindle seems to be behind a firewall (?) Hi guys, So I have this new kindle and I have been trying to set up USBNetworking, many years after my last (successful) attempt. Something is quite not right here... I am using the default configuration, the only thing I changed is the Kindle Ip address. I have verified the config file is in Unix LF mode. I also have kterm installed, and when the sshd is up I can run ifconfig -a and it will show me usb0 interface up with the address I want. FWIW, I have tried both with the default ip address, and with 192.168.1.114 (my home computers being .2 - windows - and .3 - linux). So I fire up USBNetwork, verify via kterm it is up, plug in the usb cable and... nothing. Neither putty on Windows nor Linux with ssh will get to the Kindle. If I try to ping the Kindle IP I receive no answer, and neither if I try to ping my windows or linux pc from the Kindle. Btw my computers do respond to pings when called each other. What can it be? I have generated a public key with puttygen, stored in Unix format (LF) in a text file which I renamed to usbnet/etc/authorized_keys on the kindle, and used the same key to connect from putty (though I don't think that matters: putty doesn't even reach the kindle, it's not that it doesn't like the public key). No firewall is installed on my computers, so what could it be? I think I followed the instructions correctly... Thanks!

06-20-2020, 10:52 AM	#2
NiLuJe BLAM! Posts: 13,477 Karma: 26012492 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Don't change the IPs? It doesn't have, and in fact, probably should NOT be in your subnet when in USB mode. Remember that each end of the cable has a different IP. The one you use to setup the network connection on your end is $HOST_IP. The one you connect to on your end is $KINDLE_IP. (Both of those have to be in the same subnet). Last edited by NiLuJe; 06-20-2020 at 10:58 AM.

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