[Leaplist] Linux on cfl-road-runner

[John Simpson]

On 2007-04-09, at 1410, Dan Cherry wrote:
>
> After checking out the Brighthouse website (primarily advertising -  
> not much
> tech info useful from a networking or Linux perspective), I  
> searched the LEAP
> archives and most road runner info was several years old.
>
> So I'll ask if anybody is currently using central-florida  
> roadrunner (thru
> Brighthouse) with a run-of-mill Linksys type router and Linux boxes  
> behind
> it.  If so...
>
> Do they block any ports (25 in particular, or any other key ports)?

i own a co-located server on the open internet, and all of my  
outbound mail goes though my own server's SMTP-SSL service on port  
465. however, i just tried a direct connection to my server's port 25  
and it did connect, even though my server wouldn't accept any mail  
because it refuses mail from (among other things) any IP whose  
reverse-DNS name ends with ".res.rr.com".

as for INBOUND port 25 (80, 22, etc...) i remember when i lived in  
kissimmee they were blocking ports 25 and 80 inbound. now, in college  
park, i can't say that i've ever tried. i do know that the default  
port 222 that ipcop uses for ssh service is not being blocked, so if  
you're running an ipcop firewall and turn on external ssh access, you  
will be able to get to it from outside on port 222. also, the ports  
which are commonly used for VNC, bittorrent, and H.323 audio  
streaming are also not blocked.

> Do they offer a static IP addr on their residential service?

i'm not sure... but many people block the ".res.rr.com" suffix, and  
roadrunner's dynamic IP ranges are well-known and listed in some of  
the large dynamic-block blacklists, so if you're thinking of running  
your own mail server, you probably don't want a residential package.

> Does their contract limit the number of computers or anything else  
> key to a
> home network?

the cable modem itself will only speak with the first MAC address it  
sees after powering up. if that device happens to be a router which  
does NAT (i.e. a consumer linksys router, the red interface of an  
ipcop machine, etc.) then they don't know or care about the difference.

> Any problems in general?

they tend to do maintenance during overnight periods, from 1am to  
6am, they don't offer any kind of mailing list or other mechanism for  
interested customers (like myself, and probably you as well) to find  
out about these maintenance activities ahead of time, and every time  
they do this and basically shut me down for the night, i call and ask  
them how i can find out about these things ahead of time and they  
don't have any kind of intelligent answer for me.

----------------------------------------------------------------
| John M. Simpson    ---   KG4ZOW   ---    Programmer At Large |
| http://www.jms1.net/                         <jms1 at jms1.net> |
----------------------------------------------------------------
| http://video.google.com/videoplay?docid=-4312730277175242198 |
----------------------------------------------------------------


-------------- next part --------------
A non-text attachment was scrubbed...
Name: PGP.sig
Type: application/pgp-signature
Size: 186 bytes
Desc: This is a digitally signed message part
Url : http://lists.leap-cf.org/pipermail/leaplist/attachments/20070410/a7c7a550/PGP.bin