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Uncapping Cable modem

Discussion in 'Other Hardware' started by SuperCheetah, Mar 27, 2002.

  1. StormBringer Newcomer, in training Posts: 2,871

    If you have actually done this, which I find very hard to believe, then you need to share what you did. I don't want to get speeds that might cause me to lose my ISP or land me in jail, I just want to get faster than a 26.4k connection and 1.5kbps transfers.
  2. Tweakster Newcomer, in training Posts: 224

    So is uncapping a hardware tweak and is it like unlocking a processer graphics, card etc?

    What is the fastest you can uncap a 56k modem and would it be illegal to uncap a 56k modem evern in UK?
  3. mnosteele52 Newcomer, in training

    There is no such thing as uncapping a 56K modem, it is possible to uncap a cable modem but it is illegal and you will have your service disconnected and be fined and face possible jail time.:)
  4. crusher98 Newcomer, in training

    Here is something I found ,This is Illegal and you could be caught so do not try this unless you are willing to take the chance,you have been warned.
    I am not sure if this has been posed here or not ,but i am in to testing things and if i see good information sometimes i try it and sometimes i don't .
    This one i will try right before i move back to AZ ,and i know this will work .
    Als their is another program that is eithier out or will be out Called ONESTEP I am looking for it as i write but i will post this first and then when I find it will see if it is allowed by the MODS.
    here is the information.I hope this is ok to post if not please let me know I looked for the forum rules and could not anything on this.

    Hi,

    I've been sitting on this for a while debating morally
    weither or not I should post it. After being lied to by multiple
    cable internet companies, told that I'm stupid by cable modem
    vendors, and having my access turned off for complaining about
    broken DNS i've decided that it's time to post.

    2) legal stuff

    This is theft of service, you will be probably get caught, don't
    do it if you value your cable internet service.

    This document is only to be redistributed/copied with the original
    text included (including credit to myself).

    3) explanation

    Companies are out to make money, they hire people with book knowledge,
    and stupid things like this happen. (Hi AT&T, your DNS is _still_ broken
    even after it was fixed for 2 weeks)

    Basicly it's a simple ARP caching thing, it's easy to fix in the modems
    and somewhat easy to obscure at the ISP. I'm sure *someone* must have
    done this besides me, but from all my searches on the web I've seen
    nothing but 'it's impossible' messages, the only people I know that
    can do it are people I showed how. I'm sure i'm going to upset those
    people by posting this, oh well.

    4) Let's get started

    Cable modems known to work with this:
    3Com Sharkfin (all models)
    Motorola (all models)
    Toshiba PCX1100
    Cisco (?)

    Modems that probably don't work:
    RCA DCM235
    3Com CMX (USR)


    First, you need the following:
    An operating system with
    1) A tftp server,
    2) snmp software (I used ucd-snmp),
    3) a DOCSIS config file generator such as this one:
    http://docsis.sourceforge.net/

    5) Go go go.

    a) determine the address of the modems TFTP server, some modems
    are nice enough to give this info to you on their web interface,
    others via SNMP, i've been told that a lot of providers use the
    same address as their DHCP servers. Most modems use 192.168.100.1
    as their interface address, try to snmpwalk it with the coax
    disconnected after rebooting (some retain their config information,
    but reset the community strings). (AT&T/MediaOne has 'public'
    enabled for the ro string.. go from there)

    b) determine the name of the configuration file, use the same methods
    as above, or see below if you're running a semi intelligent tftp server.

    You need to generate a DOCSIS config file for your modem to use, read
    the documentation and examples from the docsis config file program
    mentioned above.

    c) set the address of your chosen machine to the address of the
    tftp server, start pinging the address of the cable modem
    (192.168.100.1 usually), this will cause the modem to put
    you in its arp tables when you reboot it (reboot it now)

    d) the modem will (hopefully) connect to your machine and start
    (trying) to download the configuration file, if you couldn't determine
    what it was named earlier this is where the smart tftp server comes in,
    it should tell you what file name the modem attempted to grab.

    e) You're done, easy wasn't it?

    Happy surfing.

    --
    Matthew S. Hallacy FUBAR, LART, BOFH Certified
    http://techmonkeys.org/~poptix GPG public key 0x01938203

    --
    Matthew S. Hallacy FUBAR, LART, BOFH Certified
    http://techmonkeys.org/~poptix GPG public key 0x01938203
  5. ßas']['arD Newcomer, in training

    Bullplop...

    You have done something to your modem to give you a false reading, or are just outright full of shiite. It is ABSOLUTELY impossible to get more than 53Kbps over a dial-up connection (either direction), period. Phone lines are capable of up to almost 57Kbps at best; however, the FCC restricts speeds to 53Kbps universally. Even if you replaced ROM chips on your modem, you'd never see more than this...whether v90, v92, or whatever.

    Secondly, upload speed is only an issue if you're transferring files or hosting a game server. Game servers are useless at such speeds. When surfing the web, the only uploading done is an "ACK" or acknowledgement to the hosting server that you've received packets and please send/or re-send more. Web surfing, therefore, has no use for jacked upload speed.

    I could understand your speed claims if you had two modems "shotgunned" together, but in essence this is two connections. Not all ISP's support this configuration as well, and it's doubtful that a free one would.

    Basically, you're not getting what you think you are. Sorry. I haven't used dial-up since 1997...I've had a cable modem since then and I'm pleased. I highly recommend it. This is about what I get all day, everyday:
    [IMG]
  6. bachikho Newcomer, in training

    @crusher98: could u explain a little more clearer (i'm a newbie to uncapping) plz?
     
  7. nickslick74 Newcomer, in training Posts: 885

    This thread is 5 years old and was last posted in 4 years ago. Not sure if any of this really works and you darn sure bet that it's illegal!
  8. 99MustangGT Newcomer, in training

    You cannot go to jail

    I am considering trying this uncapping thing for one simple reason. I am paying my cable company for a 7Mb/s connection but all the testing I have done so far has only ever resulted in 1/2 of that speed. I don't think that's fair and I'm not one to pay for things that are not delivered to my satisfaction, so call me crusty =O

    Also it seems to me that the main reason no one here is willing to try to uncap their modem is the fear of arrest and/or jail. Well let me attempt to remove that fear for you all.

    I don't know for sure how each of you obtained your service with your provider but I do know how I did so I will assume it is much the same.

    I filled out an application and signed it. A technician came to my home and connected a cable modem for me and i was up and running.

    Sound familiar?

    Well then let me ask you this. Where is the contract with the signatures of all of the parties involved? I don't have one and niether does my provider!

    No contract - no case, therefore I cannot be charged with anything TYVM.

    chew on that for a while =D