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

From: Amos Jeffries <>
Date: Sat, 15 Nov 2008 14:34:59 +1300 wrote:
>>>> 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 next
>>>> 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 spent
> lot
>>>> of times on the net in the hope finding a clear explanation about it
>>> 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)

The clients will never get any correction when auth details are invalid.
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

>> 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


Please be using
   Current Stable Squid 2.7.STABLE5 or 3.0.STABLE10
   Current Beta Squid
Received on Sat Nov 15 2008 - 01:35:07 MST

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