Roadrunner

[gaf at blu.org (Jerry Feldman)]

I got my cable service before cable modems were readily available.  If 
there is a problem with my connection they can't blame my cable modem and 
hang up. I have not looked at the reliability of the commercial cable 
modems.

They do not run PPOE. The cable modem essentially sets you up a bridge to 
the head end, where you are effectively on an ethernet LAN with other 
clients.
One of the main differences between cable modem service and DSL is that on 
a cable modem you are on a LAN with others. You share the LAN 
bandwidth(which is about 10 Mbps) with others. Mediaone used to have a 
limit on the number of clients per segment. Beyond that number, they would 
split the segment. I have never seen a bandwidth problem on my segment. On 
DSL you have a dedicated bandwidth to the CO. Once you get to the CO, then 
you are shared with all other clients going through that CO.
Bill Horne wrote:
> Jerry Feldman wrote:
> 
> > I've had my cable modem for over 4.5 years. I have a LanCity supplied by
> > AT&T BB.
> 
> Do you think buying your own is worth it? For the ones they sell at Circui
> City, it's a ~2 year payback, but ebay prices range from $30 and up.
> 
> > AT&T BB uses standard dhcp to supply you with your IP address. My
> > SuSE Linux works out of the box with DHCLIENT.
> 
> I take it that PPPOE isn't used?
> 
> > I currently use a Linksys router because I have up to 6 computers in the
> > house which
> > might be online at any one time (3 Linux, 3 Windows).
> 
> What are the plusses and minuses of using Linksys instead of a Linux firewall
> ?
> 
> > I used to have several good FAQs specific to Mediaone, but those URLs no
> > longer
> > work. They do not block any ports except possibly those associated with
> > netbuei. I run Apache as well as sendmail.
> 
> If you come across any, please post them.
> 
> > I specifically turn off telnet, ftp, talk and a few more.
> 
> Because of security alone, or for other reasons too? Do you allow ssh?
> 
> Thanks.
> 
> Bill
> 
> 
> >
> > On 25 May 2001, at 15:07, William Warren wrote:
> >
> > > Thanks for reading this.
> > >
> > > I've just gotten the last, no-denying-it denial of ADSL service for
> > > my house, so I've signed up for RoadRunner.
> > >
> > > I'm going to search the archives, but I've some questions that might
> > > not be there.  All advice welcome, of course.
> > >
> > > 1. What cable modems will work with RoadRunner? The AT&T salesman gave
> > > me a
> > > list of manufacturers, but said he didn't have any model numbers, so I
> > > need
> > > any info I can get.  Since they charge $10 less/month if I
> > > supply the modem, this is really important to me.
> > >
> > > 2. Is there a FAQ or HOWTO specific to the MediaOne/AT&T setup? I'm
> > > going to put a Linux firewall in front of the RR modem, and I want to
> > > get it
> > > right the first time.
> > >
> > > 3. Do they block any ports? I'm going to have a VPN for work-at-home, so
> > >
> > > this is a big concern to me.
> > >
> > > 4. What are the actual speeds users can expect?
> > >
> > > Again, all suggestions welcome. Thank you.
> > >
> > >
> > > _________________________________________________________________
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> > >
> > > -
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> >
> > Jerry Feldman <gaf at blu.org>
> > Associate Director
> > Boston Linux and Unix user group
> > http://www.blu.org
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-- 
Jerry Feldman <gaf at blu.org>
Boston Linux and Unix user group
http://www.blu.org


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