Re: Confused about my home networking setup



On Wed, 10 May 2006 19:35:50 -0600, Hamad bin Turki Salami wrote:
Allodoxaphobia wrote:

On Wed, 10 May 2006 10:43:15 -0600, Hamad bin Turki Salami wrote:
Life used to be simple. I used to assign a static id in the 192.168.1.x
range to every box on my home LAN and I used two static id's for my
domain name server from my ISP, Comcast.

Then I got a message from Comcast, warning that I needed to change my
network settings to use DHCP and automatically get the dns
from the provider. That's when things started going haywire.

Which I ignored -- and nothing untoward happened here.
I let them assign whatever IP addy they want to the cable modem.
I use a set of DNS IP's that are _not_ Comcast's -- both before and
after their 'dramatic' changes.
I run a LAN with 2 linux boxen, 2 OS/2 boxen, and my First Wife's
WinXP box -- using fixed LAN IP assignments.
Like I said, I received their dire warning -- ignored it -- and nothing
untoward happened here.

<offtopic>
Still running OS/2, huh? I used to run OS/2 until work commitments
forced me to start running Linux. At the time, Linux and OS/2 didn't
play well together on my PC and I had to drop OS/2. Has OS/2 changed
much in the past 5 years?

Not much - in my estimation. There hasn't been much from IBM except
for bug fixes beyond something like Warp 4.52. There's quite a bit
of porting of open linux software. There is still some 'activity'
in the comp.os.os2... ng's -- but maybe 50% is trolling and baiting.
I don't often fire up either of my OS/2 boxen. But, it feels good
to know that they are there. :-)
</offtopic>

I ignored Comcast's warning too. My router was already getting its
address by DHCP, and I thought there would be no sense to their chaning
the address of their dns server. Then one day I woke up and none of
my machines could find Yahoo or Google or Ebay ... So I started
switching over. I guess I could have just found another dns server,
like you have. But there should be an advantage to running a dns server
on my home LAN anyway, in terms of speed, right?

Maybe a cache'ing DNS.
My approach was to Google around for references/pointers to DNS IP's.
(Googling both the web and usenet.)
Then I tested response time (ping) and routing (traceroute) and picked
the 3 I thought looked best and dropped them into /etc/resolv.conf --
pointedly *not* selecting a Comcast DNS (whose servers, interestingly,
did not make to the Top Three, anyway.)

Being paranoid, I'd think that _if_ Comcast wanted to track where their
customers are going, they would trap that information at the DNS query
-- rather than on each passage of a packet.

As for Carnivore and The Department Of Homeland Hysteria, on the other
hand, .........

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
38.24N 104.55W | @ config.com | Jonesy | OS/2
*** Killfiling google posts: <http//jonz.net/ng.htm>
.



Relevant Pages

  • Re: DNS and email problem
    ... server yet at the same time take advantage of using the Public Folders ... our remote outgoing mail server as discussed, Comcast ... performs a reverse trace, identify's our WAN IP, checks it against DNS ... Another solution is to take our static WAN IP address and register it ...
    (microsoft.public.windows.server.sbs)
  • Re: DNS and email problem
    ... Basically our situation boils down to Comcast performing ... a reverse DNS to the wrong IP address for our mail server but I'm not ... The "error" is that our mail server does have a correct PTR and all ...
    (microsoft.public.windows.server.sbs)
  • Re: DNS and email problem
    ... We've been having similar problems communicating with Comcast and AOL ... a reverse DNS to the wrong IP address for our mail server but I'm not ...
    (microsoft.public.windows.server.sbs)
  • Email not getting to Comcast addresses (Reverse DNS failure)
    ... of our SBS 2003 Exchange mail server. ... just can't figure out why comcast is trying to use the wrong IP. ... a reverse DNS to the wrong IP address for our mail server but I'm not ...
    (microsoft.public.windows.server.sbs)
  • Issues migrating SBS 2003 domain to Server 2008 Standard
    ... We are stuck migrating our SBS 2003 domain to Server 2008. ... Fatal Error:DsGetDcName (SRV-EXCH) call failed, ... Verify your Domain Name Sysytem (DNS) is ... network connectivity to a domain controller. ...
    (microsoft.public.windows.server.sbs)