[PLUG] Re: Comcast troubles
ray.mccormack at comcast.net
ray.mccormack at comcast.net
Tue Dec 6 20:35:38 UTC 2005
In regards to comcast issues ....
I have had comcast for over 8 years now, and several times have had issues just you explain.
Chances are they need to replace a filter (more people or services were added to the node) or something has gone wrong on their node (like some one crashing into a junction box). Call comcast .... takes for ever for them to show .... but when cable modems run correctly they should never have to be rebooted or loose connection. I get a steady 6000 Kbs in my house :o).
Regards,
--
Ray McCormack
McCormack Consulting
PO Box 55502
Portland, OR 97238
360-609-1346
ray.mccormack at comcast.net
http://www.mackconsult.com/
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> Today's Topics:
>
> 1. Re: Scope for a Postfix server... (Michael Rasmussen)
> 2. Re: Comcast troubles (Paul Johnson)
> 3. Re: Comcast troubles (John M. Purser)
> 4. RE: Scope for a Postfix server... (Charles Sliger)
> 5. Re: Re: Comcast troubles (m0gely)
> 6. Re: Comcast troubles (Randal L. Schwartz)
> 7. Re: Scope for a Postfix server... (Randal L. Schwartz)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 5 Dec 2005 21:33:54 -0800
> From: mikeraz at patch.com (Michael Rasmussen)
> Subject: Re: [PLUG] Scope for a Postfix server...
> To: "General Linux/UNIX discussion and help; civil and on-topic"
>
> Message-ID: <20051206053354.GA3787 at patch.com>
> Content-Type: text/plain; charset=us-ascii
>
> Charles Sliger wrote:
> > I'm not a postfix hack, but shouldn't postfix be able to perform a reverse
> > DNS lookup in conjunction with a white-list to determine if the site is
> > legit?
>
> You mean it must fulfill either requirement or one of the two
> requirements?
>
> Be forewarned that enough mail servers are not resolvable through
> reverse lookup to make it a frustrating requirement for OKing mail.
> One reference to the issues is
> http://www.saas.nsw.edu.au/solutions/dns.html
>
>
>
> --
> Michael Rasmussen, Portland Oregon
> Be appropriate && Follow your curiosity
> http://www.patch.com/words/
> The fortune cookie says:
> It's not the valleys in life I dread so much as the dips.
> -- Garfield
>
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 05 Dec 2005 13:40:43 -0800
> From: Paul Johnson
> Subject: [PLUG] Re: Comcast troubles
> To: plug at pdxlinux.org
> Message-ID:
> Content-Type: text/plain; charset=us-ascii
>
> Richard C. Steffens wrote:
>
> > Has anyone else been having trouble with Comcast this morning?
>
> No. That tends to be a fairly individual thing, and if they're having
> problems, how are they posting?
>
> > The solution has been to power down the cable modem for 10 seconds or so
> > and then power it back up.
>
> Comcast gave you a buggy RCA or Motorola modem again, huh? So far the only
> cable modem that doesn't crash after a couple months of uptime is made by
> 3Com, but I haven't seen a 3Com cable modem since Comcast and AT&T gutted
> Excite at Home.
>
> --
> Paul Johnson
> Email and Instant Messenger (Jabber): baloo at ursine.ca
> Got jabber? http://ursine.ca/Ursine:Jabber
>
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 06 Dec 2005 06:44:36 -0800
> From: "John M. Purser"
> Subject: Re: [PLUG] Comcast troubles
> To: "General Linux/UNIX discussion and help; civil and on-topic"
>
> Message-ID: <1133880276.19705.7.camel at localhost.localdomain>
> Content-Type: text/plain
>
> On Mon, 2005-12-05 at 11:56 -0800, Richard C. Steffens wrote:
> > Has anyone else been having trouble with Comcast this morning? Several
> > times, I've looked over at the cable modem and found it going through
> > the sequence it uses to establish a connection. This seems to happen
> > shortly after I've successfully received some e-mail, and am trying to
> > send a reply.
> >
> > The solution has been to power down the cable modem for 10 seconds or so
> > and then power it back up.
> >
> Richard,
>
> I had problems like that when I first moved into this apartment. Drove
> me nuts. Comcast sent a tech over and found numerous wiring problems
> between their cable and my computer. All fixed at no charge and no
> problems since then.
>
> John Purser
>
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 6 Dec 2005 09:03:19 -0800
> From: "Charles Sliger"
> Subject: RE: [PLUG] Scope for a Postfix server...
> To: "'General Linux/UNIX discussion and help; civil and on-topic'"
>
> Message-ID:
> Content-Type: text/plain; charset="us-ascii"
>
> what I meant was that postfix would get the system/domain name via a reverse
> DNS lookup and then look up that name in a white-list to see if it should be
> allowed through. That way you are dealing with a persistent name instead of
> a changing address. This would seem to be a viable solution since there are
> very few servers you wish to accept mail from out on the internet.
>
> Regards,
> Chaz
>
> Charles L. Sliger, Information Systems Engineer, chaz at bctonline.com
> "no matter where you go, there you are..."
>
> -----Original Message-----
> From: plug-bounces at lists.pdxlinux.org
> [mailto:plug-bounces at lists.pdxlinux.org] On Behalf Of Michael Rasmussen
> Sent: Monday, December 05, 2005 9:34 PM
> To: General Linux/UNIX discussion and help; civil and on-topic
> Subject: Re: [PLUG] Scope for a Postfix server...
>
> Charles Sliger wrote:
> > I'm not a postfix hack, but shouldn't postfix be able to perform a reverse
> > DNS lookup in conjunction with a white-list to determine if the site is
> > legit?
>
> You mean it must fulfill either requirement or one of the two
> requirements?
>
> Be forewarned that enough mail servers are not resolvable through
> reverse lookup to make it a frustrating requirement for OKing mail.
> One reference to the issues is
> http://www.saas.nsw.edu.au/solutions/dns.html
>
>
>
> --
> Michael Rasmussen, Portland Oregon
> Be appropriate && Follow your curiosity
> http://www.patch.com/words/
> The fortune cookie says:
> It's not the valleys in life I dread so much as the dips.
> -- Garfield
>
> _______________________________________________
> PLUG mailing list
> PLUG at lists.pdxlinux.org
> http://lists.pdxlinux.org/mailman/listinfo/plug
>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Tue, 06 Dec 2005 09:44:33 -0800
> From: m0gely
> Subject: Re: [PLUG] Re: Comcast troubles
> To: "General Linux/UNIX discussion and help; civil and on-topic"
>
> Message-ID: <4395CE01.7090100 at telestream.com>
> Content-Type: text/plain; charset=us-ascii; format=flowed
>
> Paul Johnson wrote:
>
> > So far the only
> > cable modem that doesn't crash after a couple months of uptime is made by
> > 3Com,
>
> I did plenty of research when I purchased my Toshiba and they were
> solid. My model is older now (PCX 2000) and I have not had to restart
> it once in the years I've had it. Sure, some brands or models may have
> a reputation of being problematic. But surely more than one brand out
> there isn't.
>
> --
> - m0gely
> http://quake2.telestream.com/
> Q2 | Q3A | Counter-strike
>
>
> ------------------------------
>
> Message: 6
> Date: 06 Dec 2005 10:05:00 -0800
> From: merlyn at stonehenge.com (Randal L. Schwartz)
> Subject: [PLUG] Re: Comcast troubles
> To: plug at pdxlinux.org
> Message-ID: <867jainltf.fsf at blue.stonehenge.com>
> Content-Type: text/plain; charset=us-ascii
>
> >>>>> "Richard" == Richard C Steffens writes:
>
> Richard> I suspect location is the problem.
>
> Yeah, no problem here on the west side.
>
> --
> Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
>
> Perl/Unix/security consulting, Technical writing, Comedy, etc. etc.
> See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!
>
>
>
> ------------------------------
>
> Message: 7
> Date: 06 Dec 2005 10:07:18 -0800
> From: merlyn at stonehenge.com (Randal L. Schwartz)
> Subject: [PLUG] Re: Scope for a Postfix server...
> To: plug at pdxlinux.org
> Message-ID: <863bl6nlpl.fsf at blue.stonehenge.com>
> Content-Type: text/plain; charset=us-ascii
>
> >>>>> "Charles" == Charles Sliger writes:
>
> Charles> what I meant was that postfix would get the system/domain
> Charles> name via a reverse DNS lookup and then look up that name in a
> Charles> white-list to see if it should be allowed through.
>
> So your white list contains "comcast.com", and I set up my reverse
> DNS to say "comcast.com"? Are you going to whitelist me?
>
> Whitelists like that are trivial to spoof.
>
> --
> Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
>
> Perl/Unix/security consulting, Technical writing, Comedy, etc. etc.
> See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!
>
>
>
> ------------------------------
>
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