Comcast Cable Modem install?

[Brad Crotchett]

They use MAC address authentication on the nic of the computer
connecting to the cable modem.  Therefore if you first connect a windows
pc to the cable modem to make sure it is working, they will have that
MAC address on record and will not allow another nic to connect without
calling them to explain and have it reset (or fooling them).  Anyway,
that was my problem, I first connected a windows box that would later be
masqueraded behind the firewall.  I had to work around this to get my
firewall connected (too lazy to call them).

Brad

-----Forwarded Message-----

> From: Gene Dascher <gedascher at multiservice.com>
> To: kclug at kclug.org
> Subject: RE: Comcast Cable Modem install?
> Date: 17 Dec 2002 15:27:49 -0600
> 
> What do you mean "only connect the cable modem to the firewall or you will
> have to work around that"?  What else would you connect the firewall to?
> The only MAC address authentication that they do is on the Cable modem
> itself, at least so far that I am aware.  I am using an old 486 as my
> firewall with an old ISA NIC.  The PCI NIC that they gave me is on another
> machine.
> 
> Gene
> 
> > -----Original Message-----
> > From: owner-kclug at marauder.illiana.net
> > [mailto:owner-kclug at marauder.illiana.net]On Behalf Of Brad Crotchett
> > Sent: Tuesday, December 17, 2002 3:13 PM
> > To: kclug at kclug.org
> > Subject: Comcast Cable Modem install?
> >
> >
> > http://www.linuxguruz.org/iptables/
> >
> > They have both how-to's on iptables as well as several scripts people
> > have posted.  I have Comcast and it is not that difficult, other than
> > they do run MAC address authentication, so make sure you only connect
> > the firewall to the cable modem or you will have to work around that.
> > Just find a script from that site that is going to do what you need like
> > ip masquerading etc.  I personally set it up as a script that is run on
> > bootup.  It flushes all the tables and then loads the firewall I want.
> >
> > Good luck!
> >
> > Brad
> >
> >
> > -----Forwarded Message-----
> >
> > > From: Bradley Miller <bradmiller at dslonramp.com>
> > > To: kclug at kclug.org
> > > Subject: Comcast Cable Modem install?
> > > Date: 17 Dec 2002 14:14:56 -0600
> > >
> > > Could someone point me to a quickie firewall on Linux that I
> > can painlessly
> > > put on to work with Comcast cable modem service?  I would like to do a
> > > how-to with pics of this . . . my parents are finally getting into the
> > > high-speed age.  Jeez.
> > >
> > >
> > > Bradley Miller, Owner/Programmer/Designer
> > > AccessZone Design - www.accesszonedesign.com
> > > Blue Springs, Missouri
> > > Phone: 816-228-3814		Fax: 775-254-6162
> > > Toll-free: 888-872-4420	ICQ: 48555780
> > >
> > >