[windows2000] Re: 192.168.*.* - why?
- From: Aaron Dokey <adokey@xxxxxxxxxxxx>
- To: "'windows2000@xxxxxxxxxxxxx'" <windows2000@xxxxxxxxxxxxx>
- Date: Mon, 18 Nov 2002 13:51:54 -0500
I think he may be confused on the difference between routers and DNS
servers.
Routers route packets and do not care what human readable names they may
have. In fact, the routers don't know what the names are because they don't
have to care. They just understand a 4 byte internet address.
DNS servers translate a human readable name (i.e. microsoft.com) into a 4
byte IP address. They don't do anything more. Well, they also do reverse
DNS which resolves a 4 byte IP address to a name, but that still has nothing
to do with routing.
-Aaron
-----------------------
Aaron Dokey - MIS
Reid Tool Supply
2265 Black Creek Rd.
Muskegon, MI 49444
(231) 777-3951
(231) 767-3772 (Direct)
-----------------------
-----Original Message-----
From: Robert Funderburk [mailto:robfunderburk@xxxxxxxxxxx]
Sent: Monday, November 18, 2002 1:48 PM
To: windows2000@xxxxxxxxxxxxx
Subject: [windows2000] Re: 192.168.*.* - why?
Huh?
"Internet backbone routers"?
Are these something new?
Are you thinking of the root DNS servers?
----- Original Message -----
From: "Jeff Stockard" <JStockard@xxxxxxxxxxxxxxx>
To: <windows2000@xxxxxxxxxxxxx>
Sent: Monday, November 18, 2002 12:48 PM
Subject: [windows2000] Re: 192.168.*.* - why?
>
> The Internet backbone routers use DNS to locate addresses. 10.x.x.x
> address are ignored by the Internet backbone routers. For this reason
> many companies use this address scheme in their private networks. =20
>
> -----Original Message-----
> From: Sullivan, Glenn [mailto:GSullivan@xxxxxxxxxxxxxx]=20
> Sent: Monday, November 18, 2002 12:46 PM
> To: windows2000@xxxxxxxxxxxxx
> Subject: [windows2000] Re: 192.168.*.* - why?
>
>
> OK, but what does that have to do with DNS? They don't mention DNS in
> that
> blurb.
>
> Glenn Sullivan, MCSE+I MCDBA
> David Clark Company Inc.
>
>
> -----Original Message-----
> From: Jeff Stockard [mailto:JStockard@xxxxxxxxxxxxxxx]
> Sent: Monday, November 18, 2002 12:30 PM
> To: windows2000@xxxxxxxxxxxxx
> Subject: [windows2000] Re: 192.168.*.* - why?
>
>
>
> From this site on IP addresses:
> http://www.oreilly.com/catalog/coreprot/chapter/appb.html
> Where it says "there are groups of "private" Internet addresses that can
> be used on internal networks by anyone. These address pools were set
> aside in RFC 1918, and therefore cannot be "assigned" to any
> organization. The Internet's backbone routers are configured explicitly
> not to route packets with these addresses, so they are completely
> useless outside of an organization's internal network. The address
> blocks available are listed in Table B-4."
> Any addresses in 10.x.x.x
>
> -----Original Message-----
> From: Daniel Ensor [mailto:densor@xxxxxxxxx]=3D20
> Sent: Monday, November 18, 2002 11:59 AM
> To: windows2000@xxxxxxxxxxxxx
> Subject: [windows2000] Re: 192.168.*.* - why?
>
>
> Dark N' snowy??
>
> -----Original Message-----
> From: Robert Funderburk [mailto:robfunderburk@xxxxxxxxxxx]
> Sent: Monday, November 18, 2002 4:54 PM
> To: windows2000@xxxxxxxxxxxxx
> Subject: [windows2000] Re: 192.168.*.* - why?
>
>
>
> What are you talking about with "outside DNS" ?
>
>
> ----- Original Message -----
> From: "Jeff Stockard" <JStockard@xxxxxxxxxxxxxxx>
> To: <windows2000@xxxxxxxxxxxxx>
> Sent: Monday, November 18, 2002 10:52 AM
> Subject: [windows2000] Re: 192.168.*.* - why?
>
>
> >
> > That was my point. They don't have anything to do with outside DNS.
> If
> > you used an address that was in the outside DNS range, you would be
> > continually looking to the DNS table to find other PC's on your
> network.
> >
> > -----Original Message-----
> > From: Sullivan, Glenn [mailto:GSullivan@xxxxxxxxxxxxxx]=3D3D20
> > Sent: Monday, November 18, 2002 9:20 AM
> > To: windows2000@xxxxxxxxxxxxx
> > Subject: [windows2000] Re: 192.168.*.* - why?
> >
> >
> > <----------Snip-------->
> > Companies use theses schemes so their requests for data will not look
> to
> > the
> > outside DNS list. This makes the lookup a little faster, when you can
> > skip
> > the rest of the entire Internet and just look on your Intranet.
> > <----------Snip-------->
> >
> > What do you mean? These reserved address ranges really don't have
> > anything
> > to do with DNS, to my knowledge.
> >
> > A little confused I guess. That's what happens when you wake up with
> > three
> > inches of ice covering everything...
> >
> > Glenn Sullivan, MCSE+I MCDBA
> > David Clark Company Inc.
> >
> >
> > -----Original Message-----
> > From: Jeff Stockard [mailto:JStockard@xxxxxxxxxxxxxxx]
> > Sent: Monday, November 18, 2002 9:12 AM
> > To: windows2000@xxxxxxxxxxxxx
> > Subject: [windows2000] Re: 192.168.*.* - why?
> >
> >
> >
> > They are non routable. The same is true with 10.x.x.x. Companies use
> > theses schemes so their requests for data will not look to the outside
> > DNS list. This makes the lookup a little faster, when you can skip
> the
> > rest of the entire Internet and just look on your Intranet.
> > Hope this helps
> > Jeff
> > Jesus Loves You
> >
> > -----Original Message-----
> > From: Costanzo, Ray [mailto:rcostanzo@xxxxxxxxxxx]=3D3D3D20
> > Sent: Monday, November 18, 2002 8:59 AM
> > To: windows2000@xxxxxxxxxxxxx
> > Subject: [windows2000] 192.168.*.* - why?
> >
> >
> > Hi list,
> >
> > I'm just curious about something. It seems that most networks use
> > 192.168.*.* for their internal addresses. Why? It doesn't really
> > matter, does it? Isn't 192.168.*.* completely arbitrary? My theory
> on
> > how this came to be the norm is that MS used those addresses in some
> > samples in some books or something, and people started using that and
> it
> > just became the norm. But then there's that whole Internet connection
> > sharing feature that came out in what, W98SE? With that, the computer
> > that's sharing its Internet connection will be 192.168.1.1. So, I
> > imagine that it's coded somewhere into other OS'es to look to see if
> > 192.168.1.1 can be used as a gateway when the user does not specify an
> > IP configuration. So what came first? 192.168.*.* or computers
> looking
> > to 192.168.1.1 as a gateway? Or what my real question is is why
> > 192.168.*.*?
> >
> > Thanks,
> >
> > Ray at work
> >
> >
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