Re: [squid-users] DNS Question

From: Amos Jeffries <squid3@dont-contact.us>
Date: Sat, 17 Nov 2007 11:45:45 +1300

Joseph Jenkins wrote:
> I verified that the squid cache is not using it's own dns resolution for
> the clients browsing, instead it is relying on the client's dns
> resolution. I verified that the squid cache is able to do dns
> resolution. Is there an option that I need to enable in the squid.conf
> so that the cache will do dns resolution? Is there something else I
> need to install for this?

Should not be.
What is in your squid.conf (without comments) please.

Amos

>
> TIA
> On Nov 15, 2007, at 7:15 PM, Amos Jeffries wrote:
>
>>> How do I verify that the cache is doing the dns resolution and it
>>> isn't relying on the client's dns resolution? So the "it" referred
>>> setting up the cache to do dns resolution and not to use the clients
>>> dns resolution.
>>> On Nov 15, 2007, at 1:54 PM, Amos Jeffries wrote:
>>>
>>>>> May be I am missing this, but I have not been able to find it. How
>>>>> do
>>>>> I have the squid cache do the dns lookup and use that rather than
>>>>> trusting the address that the client looks up?
>>>>>
>>>>
>>>> 'it' referring to what?
>>>> When using a proxy clients rarely ever do DNS lookups themselves.
>>>>
>>>> Amos
>>>>
>>>>
>>>
>>
>> Oh. You can:
>>
>> enable the DNS section of debug logging in cache.log and watch the DNS
>> lookups in progress.
>>
>> tcpdump/wireshark the data stream and see who is doing lookup for
>> domains.
>>
>> log on the local networks DNS server to see who is looking up what when.
>>
>> (in recent squid) look in squids access.log to see where its requesting
>> traffic from for any given request.
>>
>> use 'squidclient mgr:ipcache" to see what squid has resolved each
>> domain to.
>>
>> Amos
>>
>>
>
Received on Fri Nov 16 2007 - 15:46:07 MST

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