RE: [squid-users] NTLM auth popup boxes && Solaris 8 tuning for upgrade into 2.7.4

From: <>
Date: Sun, 16 Nov 2008 11:04:19 +0100

>>>>> hello all,
>>>>> I currently get some sun v210 boxes running solaris 8 and
>> squid-2.6.12
>>>>> and samba 3.0.20b I will upgrade these proxies into 2.7.4/3.0.32
>>>>> monday but before doing this I would like to ask you your advices
>>>> and/or
>>>>> experiences with tuning these kind of boxes.
>>>>> the service is running well today except we regularly get
>>>> authentication
>>>>> popup boxes. This is really exasperating our Users. I already
>> lot
>>>>> of times on the net in the hope finding a clear explanation about
>>>> but
>>>>> i am still searching. I already configured starting 128 ntlm_auth
>>>>> processes on each of my servers. This gives better results but
>> problem
>>>>> still remains. I also made some patching in my new package I will
>>>> deploy
>>>>> next week by overwrting some samba values .. below my little patch
>> first of all, man thanks to enter this discussion in order to help me
>> solve my problems ..
>>> Before digging deep into OS settings check your squid.conf auth, acl
>> and
>>> http_access settings.
>> okay let's go concerning auth part of the squid.conf, I would like to
>> say, nothing special .. below the ntlm config part
>> auth_param ntlm program /usr/local/bin/ntlm_auth
>> --helper-protocol=squid-2.5-ntlmssp
>> auth_param ntlm children 128
>> auth_param ntlm keep_alive on
>> acl ntlmauth proxy_auth REQUIRED
>> ...
>> http_access allow ntlmauth all
>> http_reply_access allow all
>> http_access deny all
>> deny_info TCP_RESET all
>Hmm, what those lines do is:
> - test the request for auth details (allow ntlmauth),
> - if correct details found, allow (allow ntlmauth all).
> - if none are found, or bad details ignore (allow ntlmauth all)
> - but send a RESET on the TCP link (deny all + TCP_RESET)

something I tried last week to see if it could solve my problem.

>The clients will never get any correction when auth details are
>They will just get a completely new session, the browser will try to
>resend the same broken details until it gives up and re-asks the user.
>The 'all' silencing hack is intended for situations where auth may be
>the preferred methods of access, but an alternative exists and can be
>taken easily when it fails. It prevents the browser being notified when

>credentials are wrong.
>Does it work if you make that line just: http_access allow ntlmauth

indeed seems also working, if no valid credential 'cache access denied'
otherwise goes to internet.

does it change the internal squid behaviour by removing all ??

>>> Check the TTL settings on your auth config. If it's not long enough
>> squid
>>> will re-auth between request and reply.
>> not really sure to understand what setting you are speaking about ??
>auth_param ntlm ttl

do you advice using it because I do not find any reference on it on
squid configuration guide website.

>Please be using
> Current Stable Squid 2.7.STABLE5 or 3.0.STABLE10
> Current Beta Squid
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Received on Sun Nov 16 2008 - 10:04:33 MST

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