36 replies to this topic

[1234567890]

hi i  have Motorola SB5101 modem.when i am trying to download the CONFIG file from my TFTP Server, i am unable to download it.i even tried with command prompt and the alternate method as well(changing IP address to HFC IP and Default Gateway as 198.168.100.1)but it didnt work for me..please help me. i am not able to download the Config file...

[Tito]

So is there a way to uncap your ADSL modem too or that's only for cable modems ?

[Erra]

So is there a way to uncap your ADSL modem too or that's only for cable modems ?

This thread is so old, I doubt that it would work for even Cable modems anymore. So far as I know, there isn't any way to do it with your ADSL.

[benny]

pls help. i hav motorola sb 5100... i m not able 2 down
load the img file.. from tftp server.. i need help handling comand prompt... and snmp walk...

[Jeremy]

pls help. i hav motorola sb 5100... i m not able 2 down
load the img file.. from tftp server.. i need help handling comand prompt... and snmp walk...

Read the post before yours. warned.

[ezechiel]

So is there a way to uncap your ADSL modem too or that's only for cable modems ?

This thread is so old, I doubt that it would work for even Cable modems anymore. So far as I know, there isn't any way to do it with your ADSL.

The reason why you can change downstream on cable modem is because this is set in a config file of your CM. Yes, I know you can read But I never heard about a config file for a DSL modem.
Or you should hack your ISP and change your connection settings .
And yes, nowadays it would be very hard to uncap your CM, unless you have a very stupid ISP.

I could explain everything now, but I'm not too familiar yet with all the security during provisioning of a CM. But know there is a checksum of a part of the config file (done with MD5) that needs to correspond with the checksum of the CMTS (something like that, it is more complicated though). That makes homebrew cfg files more difficult to set up. Then you have also certificates that need to correspond between CMTS and CM. And there are a few more securities. So, there is a lot of work to do (depending on your ISP).

If there is interest in this subject, I could make a topic about security in DOCSIS and EuroDOCSIS v1.0 ; v1.1; v2.0 and v3.0.
But it won't be finsihed before at least begin september. Because I still have to learn more also.

Anyone interested? Anyways, youcan read a brief explanation overhere
(link supplied by Manaox2) hxxp://cable-modems.org/articles/uncapping/

And euh.. people should use "search function" : hxxp://www.governmentsecurity.org/forum/index.php?showtopic=15066&hl=cable+modem

Cheers

[Ryan M]

With that, this topic can finally be put to rest