SB4100 firmware (comcast)

SB4100 firmware (comcast)

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Subject Author Date
SB4100 firmware (comcast) Mark Hittinger 08-19-2005
Posted by Bill G on August 20, 2005, 12:53 pm
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On Fri, 19 Aug 2005 23:08:57 -0700, "Dr Feelgood"

>
>> I'm a bit confused on this firmware issue. I wasn't aware that Comcast
>> has the
>> ability to download new firmware to my modem, and would do so without
>> informing me of that? I own my own SB4100 modem, and would not appreciate
>> this invasion of my equipment. I also have the Linksys BEFSR41 router and
>> am trying to figure out the shortcomings of that unit, as explained in
>> previous
>> posts. Can someone explain that in plain English terms? As explained in
>> another
>> posting, my problems are not in loss of service, but in slow data
>> transfer. This
>> all started a few days ago. Can someone explain in simple terms what
>> Comcast
>> has done to the network to cause this problem?
>
>What makes you think comcast did anything on their end that caused this
>problem?
>
>Actually they did but what they did is causing far different problems than
>what you report.
>
>There was one of those modem upgrades that evidently was flawwed. If your
>4100 is a Comcast owned modem they will replace it for you if you ask them
>to. If you do a hard boot of the modem it should reload the older version
>config. they were running before that problem as listed below by Mark.
>
>
>Read the customer service agreement including the AUP / TOS It gives
>Comcast the right to upgrade your firmware. not just for your modem but for
>any router you may use on the system.

Router, too? That would be a neat trick.

>You may need to replace your owned 4100 with a newer model to get the full
>benifits (speed) available? Comcast is replacing leased modems on request
>for those who are still using the 4100's

I'm assuming that holds true for the 3100, too.

--
Bill


Posted by Robert L. Haar on August 20, 2005, 11:30 am
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> On Fri, 19 Aug 2005 23:08:57 -0700, "Dr Feelgood"

>>
>>
>> Read the customer service agreement including the AUP / TOS It gives
>> Comcast the right to upgrade your firmware. not just for your modem but for
>> any router you may use on the system.
>
> Router, too? That would be a neat trick.

That drew my attention also. I can understand the cable provider wanting to
manage the cable modem for upgrades and configuration changes. They might be
interested in what I have attached to the modem, but I hope that they cannot
get through my hardware firewall. Beyond that. I have turned off WAN admin
on my router and changed the admin password. There may still be back doors
and other security weaknesses that I don't know about, but I have done what
I can to lock it down. If Comcast could reach in to my systems, then so
could the the hacker down the street.



Posted by Bill G on August 20, 2005, 6:18 pm
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On Sat, 20 Aug 2005 11:30:08 -0400, "Robert L. Haar"

>
>> On Fri, 19 Aug 2005 23:08:57 -0700, "Dr Feelgood"
>
>>>
>>>
>>> Read the customer service agreement including the AUP / TOS It gives
>>> Comcast the right to upgrade your firmware. not just for your modem but for
>>> any router you may use on the system.
>>
>> Router, too? That would be a neat trick.
>
>That drew my attention also. I can understand the cable provider wanting to
>manage the cable modem for upgrades and configuration changes. They might be
>interested in what I have attached to the modem, but I hope that they cannot
>get through my hardware firewall. Beyond that. I have turned off WAN admin
>on my router and changed the admin password. There may still be back doors
>and other security weaknesses that I don't know about, but I have done what
>I can to lock it down. If Comcast could reach in to my systems, then so
>could the the hacker down the street.

I don't think it's possible, actually. That's why I mentioned it. ;-)

--
Bill


Posted by riggor99999 on August 20, 2005, 7:02 am
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The cable companies push the firmware / config / image to the cable modems.
ALL cable companies are like that, and has nothing to do if you own or rent
the cable modem.

If you pay for the upgraded Gold service, 8 mbps down / 786 kpbs up, they
send down a new firmware / config / image file that tells your modem how to
do that.

Google "uncapping" cable modem for more on how the cable modem is controlled
by the cable company.

To reset / clean everything up - try turning off the router and cable modem.
Wait one minute. Turn on the cable modem, wait 1 min, then turn on the
router.


> I'm a bit confused on this firmware issue. I wasn't aware that Comcast
> has the
> ability to download new firmware to my modem, and would do so without
> informing me of that? I own my own SB4100 modem, and would not appreciate
> this invasion of my equipment. I also have the Linksys BEFSR41 router and
> am trying to figure out the shortcomings of that unit, as explained in
> previous
> posts. Can someone explain that in plain English terms? As explained in
> another
> posting, my problems are not in loss of service, but in slow data
> transfer. This
> all started a few days ago. Can someone explain in simple terms what
> Comcast
> has done to the network to cause this problem?
>
> Mark Hittinger wrote:
>
>> I've been having some whacky problems lately with our connection in dfw.
>>
>> We've had to power cycle the SB4100 to get service back at least once a
>> day.
>>
>> I noticed in the "log" that they had been loading
>> SB4100-1.4.9.4-SCM02-NOSH
>> firmware into the modem lately but today they have reverted to the
>> SB4100-1.4.9.0-SCM00-NOSH version (again after a strange outage and a
>> power
>> cycle of the modem service is restored).
>>
>> Looks like some bad firmware got out.
>>
>> Later
>>
>> Mark Hittinger
>> bugs@pu.net
>




Posted by Scott in Baltimore on August 20, 2005, 12:40 pm
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Mark Hittinger wrote:
> I've been having some whacky problems lately with our connection in dfw.
>
> We've had to power cycle the SB4100 to get service back at least once a day.
>
> I noticed in the "log" that they had been loading SB4100-1.4.9.4-SCM02-NOSH
> firmware into the modem lately but today they have reverted to the
> SB4100-1.4.9.0-SCM00-NOSH version (again after a strange outage and a power
> cycle of the modem service is restored).
>
> Looks like some bad firmware got out.
>
> Later
>
> Mark Hittinger
> bugs@pu.net

In Baltimore, we're presently using an SB4100 (SB4100-1.4.9.0-SCM00-NOSH) to a
BEFSR41.

No problems here.


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