Something interesting

Tue May 7 20:07:19 CDT 2002

I did a full portscan on my cablemodem, and port 55555 is open.  I tried to
telnet to it, and this is what I got:

1$9$747000000$2$6$64 QAM$3$29$US Standard Cable
Frequencies$4$11$4#5#6#1#2#3$5$1$4$6$4$QPSK$7$14$2559999.000000$8$9$40.90000
2$9$12$DHCP SUCCESS$10$12$TFTP SUCCESS$11$11$REG SUCCESS$12$11$BPI
SUCCESS$13$38$CM is ALLOWED for CPE Internet
Traffic$14$8$49710084$15$10$1690800304$16$1$0$17$1$1$18$17$Downstream
Locked$19$7$32,4,32$20$8$3.008751$21$15$Ranging
Success$22$5$Green$23$5$Green$24$5$Green$25$5$Green$26$5$Green$27$5$Green$28
$9$747000000$29$8$91000000$30$9$857000000$

Any ideas on what this is or how I can parse the $ stuff to see what all
this means??

-Lucas
----- Original Message -----
From: "Duane Attaway" <dattaway at attaway.yi.org>
To: "Lucas Peet" <lpeet at eccod.com>
Sent: Tuesday, May 07, 2002 12:13 PM
Subject: Re: 2 phone lines

> On Tue, 7 May 2002, Lucas Peet wrote:
>
> > I've heard this in a few places - but everything that I've seen, and on
RR's
> > site - your basic $44/mo. service is for 2Mb down, 768k up??
>
> Cablemodems have their very own webserver for troubleshooting, so I
> checked its current settings.  It says 2.00MB/0.38MB.  Interestingly, the
> download speeds appear greater that what it says.  I'm told if one knows
> snmp messaging and the encryption keys, one could reprogram the modem's
> configuration.  That's where the limits are programmed.
>
> Yes, I was paying $19.95 until a few months ago.  $44 is still pretty good
> for a connection that outperforms a $700 T1.
>
> Here's what my cablemodem shows:
>      _________________________________________________________________
>
>                       Cable Modem Operation Configuration
>      _________________________________________________________________
>
>   Operation Configuration
>
>    Network Access: Enabled
>    Maximum Downstream Data Rate: 2.00 Mb/s
>    Maximum Upstream Data Rate: 0.38 Mb/s
>    Maximum Upstream Channel Burst: Not Present
>    Modem Capability: Concatenation Disabled
>    Software Upgrade File Name: /3com_29220_v01_21v.bin
>    DHCP server IP Address: 10.62.54.197
>    Maximum Number of CPEs: 1
>
> References
>
>    1. http://192.168.100.1/index
>    2. http://192.168.100.1/index
>
>
> And the following shows why they might include an upstream cap.  Note the
> transmit frequency is much lower at 37MHz, which is about 1/20th the
> bandwidth of the 747MHz receive frequency.  There needs to be a great
> seperation of the two frequencies due to cable impedance reflections.
>
> Also, capping the upload rate also reduces the severity of malfuctioning
> virus infested computers which can cause instant catastrophic mayhem to
> the network.  Try flood pinging broadcast addresses at full speed with
> faked IP addresses, and you can see instant carnage as all hosts on that
> network try to respond at full speed.
>
>      _________________________________________________________________
>
>                               Cable Modem Status
>      _________________________________________________________________
>
>   Downstream Status
>
>    Downstream Lock: Locked
>    Downstream Frequency: 747.0000 MHz
>    Downstream Modulation: 64 QAM
>    Downstream Interleave Depth: 32,4,32
>    Downstream Receive Power Level: -5 dB
>
>   Upstream Status
>
>    Upstream Channel ID: 2
>    Upstream Frequency: 37.0080 MHz
>    Upstream Modulation: QPSK
>    Upstream Symbol Rate: 2560 ksym/sec
>    Upstream Transmit Power Level: 32 dB
>
>   General Status
>
>    Cable Modem IP Address: 10.62.54.197
>    Baseline Privacy Status: Enabled
>    Registration Status: Operational
>
> References
>
>    1. http://192.168.100.1/index
>    2. http://192.168.100.1/index
>
>
>
> >
> >
> > ----- Original Message -----
> > From: "Duane Attaway" <dattaway at attaway.yi.org>
> > To: "J. Eric Gilliland" <patzeric at yahoo.com>
> > Cc: <kclug at kclug.org>
> > Sent: Tuesday, May 07, 2002 8:49 AM
> > Subject: Re: 2 phone lines
> >
> >
> > > That was sweet until they equalized the price for everyone a few
months
> > > ago.  Along with that, my 2MB/2MB up/down speed was changed to
3MB/380KB.
> >
> >
>
> --
> Why drive a car when you can ride a bike?
> http://attaway.yi.org                   http://counter.li.org   user
#142150
>
>