ISP DNS servers

Hi,

When I connect to my ISP to get online, it seems to me that the DNS server
it assigns to me is now on the same LAN as I am (or can be thought to be
of as such) (I'm broadband btw), so....... why is the DNS server IP it
gives me not a 192.168... class address. The address I get is just a
normal Internet IP, the same as would have been used had I been connecting
to it from anywhere in the world. This seems to me to be slightly
innefficient.


Be kind I just got my computer installed and running and I'm trying to
teach myself as much as I can (as you can probably tell from the flood of
messages


Thanks a lot for all your help,


Schewdent.

Schewdent wrote:
> When I connect to my ISP to get online, it seems to me that the DNS server
> it assigns to me is now on the same LAN as I am (or can be thought to be
> of as such) (I'm broadband btw), so....... why is the DNS server IP it
> gives me not a 192.168... class address. The address I get is just a
> normal Internet IP, the same as would have been used had I been connecting
> to it from anywhere in the world. This seems to me to be slightly
> innefficient.

Hi there, mate! - Welcome to the community.

As Bill has already told You in an even younger thread of Yours, the
basic homework is up to You...

First off, You should point out what exactly Your problem is. Like here,
I'm not sure what You're complaining about. Getting a "real" IP, or not
getting one from within Your subnet...


> Be kind I just got my computer installed and running and I'm trying to
> teach myself as much as I can (as you can probably tell from the flood of
> messages

"Teaching oneself" includes the said "basic homework".

The reason why people are lurking 'round here is to help You. - Many of
them do this because they got good advice among their first steps here.

Give us a chance to help You out. - Tell us what the trouble is, and
what You've done about it before coming here. Or, try reading RTFMs and
HowTos first.


Cheers, Jack.

--
----------------------------------------------------------------------
My personal reading of the string "MicroSoft" expands to "NanoWeak"...

Schewdent wrote:

> Hi,
>
> When I connect to my ISP to get online, it seems to me that the DNS server
> it assigns to me is now on the same LAN as I am (or can be thought to be
> of as such) (I'm broadband btw), so....... why is the DNS server IP it
> gives me not a 192.168... class address. The address I get is just a
> normal Internet IP, the same as would have been used had I been connecting
> to it from anywhere in the world. This seems to me to be slightly
> innefficient.
>
I am uncertain about your net setup. You appear to post from IP
81.106.132.231 which is a official routable IP address, while 192.168.X.X
won't pass the cable modem or your isps router (because it's a dedicated
"private" range for LAN purposes). So if you ask the question about a
private range you seem to see on your side, I assume you have a 2nd network
interface with the private range set up. Do you want to/have connect/ed
more than just one pc to the broadband?
However, you receive a few data via dhcp, amongst which is
- your actual IP (may change every time you turn on your PC)
- the subnet mask (can be any subset of that class A net)
- the gateway entry (usually first ip address in your range defined by ip
and subnet) to which every outgoing non-local packets are routed
- the DNS servers of your ISP (which you may find in /etc/resolv.conf as the
network connection script puts them there "automagically")

>
> Be kind I just got my computer installed and running and I'm trying to
> teach myself as much as I can (as you can probably tell from the flood of
> messages
>
Google for networking basics or "linux networking howto". Have fun and take
plenty of time. Don't forget to backup your /etc folder before you attempt
to experiment
--
Longhorn error#4711: TCPA / NGSCB VIOLATION: Microsoft optical mouse
detected penguin patterns on mousepad. Partition scan in progress
*to*remove*offending*incompatible*products.**Reactivate*your*MS*software.
Linux woodpecker.homnet.at 2.6.8-0.rc1.pkt*[LinuxCounter#295241]

Schewdent wrote:

> Hi,
>
> When I connect to my ISP to get online, it seems to me that the DNS server
> it assigns to me is now on the same LAN as I am (or can be thought to be
> of as such) (I'm broadband btw), so....... why is the DNS server IP it
> gives me not a 192.168... class address. The address I get is just a
> normal Internet IP, the same as would have been used had I been connecting
> to it from anywhere in the world. This seems to me to be slightly
> innefficient.
>
>
> Be kind I just got my computer installed and running and I'm trying to
> teach myself as much as I can (as you can probably tell from the flood of
> messages

You need to look into what constitues an IP address. 192.168.*.* are class C
"private" addresses. They're not "routable" addresses, so they can't be
used on the Internet, and are designed for use on your (or anybody elses')
LAN.

The reason you gateway is the same as your DNS is that the box you use for
the task does both jobs (although it will very likely be a caching DNS
rather than the full blown thing).