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Date: Sun, 25 Nov 2007 06:33:45 +1100
From: "Ed Durrant" <os2-wireless_users@2rosenthals.com>
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Subject: Re: [OS2Wireless] OT - network weirdness

Sam Lewis wrote:
> Stanley Sidlov wrote:
>
>> In ALL cases, the DNS server at the client level is the ROUTER's IP 
>> address,
> A router isn't always a DNS server.
>
> Although that may be the norm.  A client may be getting DNS address of 
> the ISP or other from the router, which is the case in a Linksys 
> router we use at work, or a router may very well have DNS server 
> service capability in which case you would use the router address as 
> the DNS address and then make sure that the router has an external DNS 
> address in his table.
>
> I'm wondering if Julians problem machine can ping the DNS address 
> whatever it/they is/are.  And then ping the DNS from the router 
> itself.  Also does all of his machines have the same DNS addresses?
> Sam
>
The ISP's DNS may also be cached in the ADSL 2+ modem, as is the case 
with Telstra's "2-Wire" (make not connection description) modem. So the 
DNS address you give can in some cases be the actual ISP DNS server's 
addresses, the address of the port on the router or the address of the 
port on the ADSL modem. It is possible that either the modem or the 
router is blocking the required TCP/UDP DNS lookup ports in which case 
you have to use the cached DNS (or open the ports).

Cheers/2

Ed.

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